This page has only limited features, please log in for full access.

Unclaimed
Hoang-Dung Tran
Faculty of Biotechnology Nguyen-Tat-Thanh University, HCM City, Vietnam 298A-300A Nguyen-Tat-Thanh Street, District 04, Hochiminh City 72820, Vietnam

Honors and Awards

The user has no records in this section


Career Timeline

The user has no records in this section.


Short Biography

The user biography is not available.
Following
Followers
Co Authors
The list of users this user is following is empty.
Following: 0 users

Feed

Review
Published: 27 April 2021 in Agriculture
Reads 0
Downloads 0

Rice breeding was conducted for a long time during historical times and is an important job in Vietnam because rice is the major food for domestic consumption and export. In this review, we have provided a comprehensive insight into the importance of promising rice germplasm resources, breeding achievements, and breeding approaches as well as discussed challenges and perspectives of rice breeding in this country. With rice germplasm and wild rice relative resources with rich and various genetic diversity, their useful genes and traits have been exploited and integrated into commercial varieties as the final outputs of rice breeding programs. New achievements of the modern genetics era have been approached and effectively contributed to breeding activities in this country. Genome sequences, molecular breeding, and mutation are powerful tools and playing vital roles in developing new varieties with characteristics of interest that should be followed by the current market demands. In the last decades, there has been a plethora of newly generated varieties by Vietnamese scientists and rice breeders and approved by the state authorities. However, very few domestic mega varieties have prevailed over the imported varieties. Therefore, rice breeding in this country is faced with big challenges, including limitations of backgrounds, budgets, and even talents in basic research to compete with other rice-producing countries. The target goals and long-term approaches for rice breeding should be paid explicitly in priority to ensure national food security and the advantage and development of rice breeding in this country.

ACS Style

Tran Khanh; Vu Duong; Phi Nguyen; Tran Xuan; Nguyen Trung; Khuat Trung; Dong Gioi; Nguyen Hoang; Hoang-Dung Tran; Do Trung; Bui Huong. Rice Breeding in Vietnam: Retrospects, Challenges and Prospects. Agriculture 2021, 11, 397 .

AMA Style

Tran Khanh, Vu Duong, Phi Nguyen, Tran Xuan, Nguyen Trung, Khuat Trung, Dong Gioi, Nguyen Hoang, Hoang-Dung Tran, Do Trung, Bui Huong. Rice Breeding in Vietnam: Retrospects, Challenges and Prospects. Agriculture. 2021; 11 (5):397.

Chicago/Turabian Style

Tran Khanh; Vu Duong; Phi Nguyen; Tran Xuan; Nguyen Trung; Khuat Trung; Dong Gioi; Nguyen Hoang; Hoang-Dung Tran; Do Trung; Bui Huong. 2021. "Rice Breeding in Vietnam: Retrospects, Challenges and Prospects." Agriculture 11, no. 5: 397.

Journal article
Published: 07 April 2021 in Agriculture
Reads 0
Downloads 0

The management of amylose and protein contents and cooking quality are the main challenges in rice macronutrients and quality improvement. This experiment was conducted to examine the rice grain quality, alkali digestion, and gel consistency responses to irrigation interval after anthesis. Three rice varieties (K1, K3, and K4) were subjected to different irrigation intervals (1, 2, and 3 d) after anthesis. The findings of this study showed that the protein content was markedly increased from 6.53–6.63% to 9.93–10.16%, whilst the amylose content was decreased significantly from 22.00–22.43% to 16.33–17.56% under stressed treatments at irrigation intervals, whilst the quantity of fatty acids was not affected. The 3-d irrigation interval recorded the highest protein content but the lowest amylose value. In addition, this treatment shows lower gelatinization temperature, but it is negatively associated with hard gel consistency under irrigation interval. This study highlights that the water management following a 3-d irrigation interval from anthesis is a useful and simple treatment to improve rice nutrients and grain cooking quality.

ACS Style

Ramin Rayee; Tran Xuan; Tran Khanh; Hoang-Dung Tran; Kakar Kifayatullah. Efficacy of Irrigation Interval after Anthesis on Grain Quality, Alkali Digestion, and Gel Consistency of Rice. Agriculture 2021, 11, 325 .

AMA Style

Ramin Rayee, Tran Xuan, Tran Khanh, Hoang-Dung Tran, Kakar Kifayatullah. Efficacy of Irrigation Interval after Anthesis on Grain Quality, Alkali Digestion, and Gel Consistency of Rice. Agriculture. 2021; 11 (4):325.

Chicago/Turabian Style

Ramin Rayee; Tran Xuan; Tran Khanh; Hoang-Dung Tran; Kakar Kifayatullah. 2021. "Efficacy of Irrigation Interval after Anthesis on Grain Quality, Alkali Digestion, and Gel Consistency of Rice." Agriculture 11, no. 4: 325.

Journal article
Published: 18 February 2021 in Applied Sciences
Reads 0
Downloads 0

In the production of astaxanthin from Haematococcus pluvialis, the process of growing algal biomass in the vegetative green stage is an indispensable step in both suspended and immobilized cultivations. The green algal biomass is usually cultured in a suspension under a low light intensity. However, for astaxanthin accumulation, the microalgae need to be centrifuged and transferred to a new medium or culture system, a significant difficulty when upscaling astaxanthin production. In this research, a small-scale angled twin-layer porous substrate photobioreactor (TL-PSBR) was used to cultivate green stage biomass of H. pluvialis. Under low light intensities of 20–80 µmol photons m−2·s−1, algae in the biofilm consisted exclusively of non-motile vegetative cells (green palmella cells) after ten days of culturing. The optimal initial biomass density was 6.5 g·m−2, and the dry biomass productivity at a light intensity of 80 µmol photons m−2·s−1 was 6.5 g·m−2·d−1. The green stage biomass of H. pluvialis created in this small-scale angled TL-PSBR can be easily harvested and directly used as the source of material for the inoculation of a pilot-scale TL-PSBR for the production of astaxanthin.

ACS Style

Thanh-Tri Do; Binh-Nguyen Ong; Tuan-Loc Le; Thanh-Cong Nguyen; Bich-Huy Tran-Thi; Bui Thu Hien; Michael Melkonian; Hoang-Dung Tran. Growth of Haematococcus pluvialis on a Small-Scale Angled Porous Substrate Photobioreactor for Green Stage Biomass. Applied Sciences 2021, 11, 1788 .

AMA Style

Thanh-Tri Do, Binh-Nguyen Ong, Tuan-Loc Le, Thanh-Cong Nguyen, Bich-Huy Tran-Thi, Bui Thu Hien, Michael Melkonian, Hoang-Dung Tran. Growth of Haematococcus pluvialis on a Small-Scale Angled Porous Substrate Photobioreactor for Green Stage Biomass. Applied Sciences. 2021; 11 (4):1788.

Chicago/Turabian Style

Thanh-Tri Do; Binh-Nguyen Ong; Tuan-Loc Le; Thanh-Cong Nguyen; Bich-Huy Tran-Thi; Bui Thu Hien; Michael Melkonian; Hoang-Dung Tran. 2021. "Growth of Haematococcus pluvialis on a Small-Scale Angled Porous Substrate Photobioreactor for Green Stage Biomass." Applied Sciences 11, no. 4: 1788.

Preprint content
Published: 08 July 2020
Reads 0
Downloads 0

Vietnam possesses a vast diversity of rice landraces due to its geographical situation, latitudinal range, and a variety of ecosystems. This genetic diversity constitutes a highly valuable resource at a time when the highest rice production areas in the low-lying Mekong and Red River Deltas are enduring increasing threats from climate changes, particularly in rainfall and temperature patterns. We analysed 672 Vietnamese rice genomes, 616 newly sequenced, that encompass the range of rice varieties grown in the diverse ecosystems found throughout Vietnam. We described four Japonica and five Indica subpopulations within Vietnam likely adapted to the region of origin. We compared the population structure and genetic diversity of these Vietnamese rice genomes to the 3,000 genomes of Asian cultivated rice. The named Indica-5 (I5) subpopulation was expanded in Vietnam and contained lowland Indica accessions, which had with very low shared ancestry with accessions from any other subpopulation and were previously overlooked as admixtures. We scored phenotypic measurements for nineteen traits and identified 453 unique genotype-phenotype significant associations comprising twenty-one QTLs (quantitative trait loci). The strongest associations were observed for grain size traits, while weaker associations were observed for a range of characteristics, including panicle length, heading date and leaf width. We identified genomic regions selected in both Indica and Japonica subtypes during the breeding of these subpopulations within Vietnam and discuss in detail fifty-two selected regions in I5, which constitute an untapped resource of cultivated rice diversity. Our results highlight traits and their associated genomic regions, which were identified by fine phenotyping and data integration. These are a potential source of novel loci and alleles to breed a new generation of sustainable and resilient rice.

ACS Style

Janet Higgins; Bruno Santos; Tran Dang Khanh; Khuat Huu Trung; Tran Duy Duong; Nguyen Thi Phuong Doai; Nguyen Truong Khoa; Dang Thi Thanh Ha; Nguyen Thuy Diep; Kieu Thi Dung; Cong Nguyen Phi; Tran Thi Thuy; Nguyen Thanh Tuan; Hoang Dung Tran; Hoang Thi Giang; Ta Kim Nhung; Cuong Duy Tran; Son Vi Lang; La Tuan Nghia; Nguyen Van Giang; Tran Dang Xuan; Anthony Hall; Sarah Dyer; Le Huy Ham; Mario Caccamo; Jose J De Vega. Evidence of selection, adaptation and untapped diversity in Vietnamese rice landraces. 2020, 1 .

AMA Style

Janet Higgins, Bruno Santos, Tran Dang Khanh, Khuat Huu Trung, Tran Duy Duong, Nguyen Thi Phuong Doai, Nguyen Truong Khoa, Dang Thi Thanh Ha, Nguyen Thuy Diep, Kieu Thi Dung, Cong Nguyen Phi, Tran Thi Thuy, Nguyen Thanh Tuan, Hoang Dung Tran, Hoang Thi Giang, Ta Kim Nhung, Cuong Duy Tran, Son Vi Lang, La Tuan Nghia, Nguyen Van Giang, Tran Dang Xuan, Anthony Hall, Sarah Dyer, Le Huy Ham, Mario Caccamo, Jose J De Vega. Evidence of selection, adaptation and untapped diversity in Vietnamese rice landraces. . 2020; ():1.

Chicago/Turabian Style

Janet Higgins; Bruno Santos; Tran Dang Khanh; Khuat Huu Trung; Tran Duy Duong; Nguyen Thi Phuong Doai; Nguyen Truong Khoa; Dang Thi Thanh Ha; Nguyen Thuy Diep; Kieu Thi Dung; Cong Nguyen Phi; Tran Thi Thuy; Nguyen Thanh Tuan; Hoang Dung Tran; Hoang Thi Giang; Ta Kim Nhung; Cuong Duy Tran; Son Vi Lang; La Tuan Nghia; Nguyen Van Giang; Tran Dang Xuan; Anthony Hall; Sarah Dyer; Le Huy Ham; Mario Caccamo; Jose J De Vega. 2020. "Evidence of selection, adaptation and untapped diversity in Vietnamese rice landraces." , no. : 1.

Journal article
Published: 27 May 2020 in Agriculture
Reads 0
Downloads 0

Salinity stress is one of the most severe constraints limiting rice production worldwide. Thus, the development of salt-tolerant rice promises to deal with increasing food demand due to climate change effects. This study investigated the salinity tolerance of mutant rice by evaluating phenotype and genotype, using forty-two simple sequence repeat (SSR) markers linked to the salinity tolerance Saltol quantitative trait locus (QTL) in ten cultivars and mutant lines. Results of phenotypic screening showed that the mutant line SKLo/BC15TB and cultivar BC15TB performed salt tolerance, while the mutant line Bao Thai/DT 84 and cultivar DT84DB were sensitive to salt stress. The markers RM 493, RM 562, RM 10748, RM 518, RM 237, and RM 20224 were the most polymorphic in salinity tolerance. Among them, RM 237, RM 10748, and RM 224 showed the highest polymorphism information (PIC = 0.58). This study reveals that the three markers are profitable for classification of salinity tolerance in both cultivar and mutant rice. The mutant line SKLo/BC15TB and cultivar BC15TB were found to be promising candidates for diversity analysis of salt-tolerant rice. Findings of this study are useful for developing new salinity-tolerant rice cultivars towards climate change.

ACS Style

Can Huong; Truong Anh; Hoang-Dung Tran; Vu Duong; Nguyen Trung; Tran Dang Khanh; Tran Dang Xuan. Assessing Salinity Tolerance in Rice Mutants by Phenotypic Evaluation Alongside Simple Sequence Repeat Analysis. Agriculture 2020, 10, 191 .

AMA Style

Can Huong, Truong Anh, Hoang-Dung Tran, Vu Duong, Nguyen Trung, Tran Dang Khanh, Tran Dang Xuan. Assessing Salinity Tolerance in Rice Mutants by Phenotypic Evaluation Alongside Simple Sequence Repeat Analysis. Agriculture. 2020; 10 (6):191.

Chicago/Turabian Style

Can Huong; Truong Anh; Hoang-Dung Tran; Vu Duong; Nguyen Trung; Tran Dang Khanh; Tran Dang Xuan. 2020. "Assessing Salinity Tolerance in Rice Mutants by Phenotypic Evaluation Alongside Simple Sequence Repeat Analysis." Agriculture 10, no. 6: 191.

Journal article
Published: 10 April 2020 in Biology
Reads 0
Downloads 0

Dendrobium has been widely used not only as ornamental plants but also as food and medicines. The identification and evaluation of the genetic diversity of Dendrobium species support the conservation of genetic resources of endemic Dendrobium species. Uniquely identifying Dendrobium species used as medicines helps avoid misuse of medicinal herbs. However, it is challenging to identify Dendrobium species morphologically during their immature stage. Based on the DNA barcoding method, it is now possible to efficiently identify species in a shorter time. In this study, the genetic diversity of 76 Dendrobium samples from Southern Vietnam was investigated based on the ITS (Internal transcribed spacer), ITS2, matK (Maturase_K), rbcL (ribulose-bisphosphate carboxylase large subunit) and trnH-psbA (the internal space of the gene coding histidine transfer RNA (trnH) and gene coding protein D1, a polypeptide of the photosystem I reaction center (psaB)) regions. The ITS region was found to have the best identification potential. Nineteen out of 24 Dendrobium species were identified based on phylogenetic tree and Indel information of this region. Among these, seven identified species were used as medicinal herbs. The results of this research contributed to the conservation, propagation, and hybridization of indigenous Dendrobium species in Southern Vietnam.

ACS Style

Nhu-Hoa Nguyen; Huyen-Trang Vu; Ngoc-Diep Le; Thanh-Diem Nguyen; Hoa-Xo Duong; Hoang-Dung Tran. Molecular Identification and Evaluation of the Genetic Diversity of Dendrobium Species Collected in Southern Vietnam. Biology 2020, 9, 76 .

AMA Style

Nhu-Hoa Nguyen, Huyen-Trang Vu, Ngoc-Diep Le, Thanh-Diem Nguyen, Hoa-Xo Duong, Hoang-Dung Tran. Molecular Identification and Evaluation of the Genetic Diversity of Dendrobium Species Collected in Southern Vietnam. Biology. 2020; 9 (4):76.

Chicago/Turabian Style

Nhu-Hoa Nguyen; Huyen-Trang Vu; Ngoc-Diep Le; Thanh-Diem Nguyen; Hoa-Xo Duong; Hoang-Dung Tran. 2020. "Molecular Identification and Evaluation of the Genetic Diversity of Dendrobium Species Collected in Southern Vietnam." Biology 9, no. 4: 76.

Review
Published: 19 March 2020 in Sustainability
Reads 0
Downloads 0

The riverine ecosystems of the Mekong River Basin possess the world’s most productive inland fishery and provide highly productive food crops for millions of people annually. The development of hydropower potential in the Mekong River has long been of interest to governments in the region. Among the existing 64 dams, 46 dams have been built in the Lower Mekong Basin (LMB) to produce up to 8650 MW of electricity. Additionally, of the 123 proposed built hydropower dams, eleven hydropower plants have been nominated for the river mainstream and are expected to install a total of 13,000 MW in the LMB countries. However, serious concerns have intensified over the potential negative economic consequences, especially on fisheries and agriculture in Cambodia and Vietnam. To date, most of the concerns have concentrated on the impacts on hydrology, environment, livelihood, and diversity in the LMB attributed to hydropower development. This paper, however, discusses the fishery and agricultural sectors of the LMB and focuses on the downstream floodplains of Cambodia and Vietnam. The dam construction has caused greater losses of biodiversity and fisheries than climate change in the LMB. The reduction of 276,847 and 178,169 t of fish, 3.7% and 2.3% of rice, 21.0% and 10.0% of maize will contribute to a decrease of 3.7% and 0.3% of the GDP of Cambodia and Vietnam, respectively. Lao PDR may benefit the most revenue from electricity generation than the other country in the LMB, as most of the proposed dams are projected in the country. Cambodia burdens 3/4 of the reduction of total capture fishery destruction, whilst Lao PDR, Thailand, and Vietnam endure the remaining 1/3 losses. The tradeoff analyses reveal that losses of capture fisheries, sediment or nutrients, and social mitigation costs are greater than the benefits from electricity generation, improved irrigation, and flood control of the LMB region. The socioeconomic and environmental damage caused by hydropower dams in developing countries, including the Mekong, is greater than the early costs in North America and Europe. It is proposed that dam construction for hydropower in the Mekong River, as well as other rivers in developing countries, should be gradually removed and shifted toward solar, wind, and other renewable resources.

ACS Style

Yuichiro Yoshida; Han Soo Lee; Bui Huy Trung; Hoang-Dung Tran; Mahrjan Keshlav Lall; Kifayatullah Kakar; Tran Dang Xuan. Impacts of Mainstream Hydropower Dams on Fisheries and Agriculture in Lower Mekong Basin. Sustainability 2020, 12, 2408 .

AMA Style

Yuichiro Yoshida, Han Soo Lee, Bui Huy Trung, Hoang-Dung Tran, Mahrjan Keshlav Lall, Kifayatullah Kakar, Tran Dang Xuan. Impacts of Mainstream Hydropower Dams on Fisheries and Agriculture in Lower Mekong Basin. Sustainability. 2020; 12 (6):2408.

Chicago/Turabian Style

Yuichiro Yoshida; Han Soo Lee; Bui Huy Trung; Hoang-Dung Tran; Mahrjan Keshlav Lall; Kifayatullah Kakar; Tran Dang Xuan. 2020. "Impacts of Mainstream Hydropower Dams on Fisheries and Agriculture in Lower Mekong Basin." Sustainability 12, no. 6: 2408.

Journal article
Published: 04 December 2019 in Molecules
Reads 0
Downloads 0

Clausena indica fruits are routinely used for the culinary purpose as natural spices, whereas leaves and roots are folk medicine with various health benefits in southern China, South and Southeast Asia. In this study, the bioassay-guided fractionation by column chromatography yielded three pure compounds including dentatin, nordentatin, and clausine K and five active fractions (Re1-5) from C. indica roots. These known anticancer compounds were confirmed by X-ray diffraction, 1H-, 13C-nuclear magnetic resonance (NMR), and electrospray ionization tandem mass spectrometric (ESI-MS-MS) analyses. Meanwhile, the phytochemical constituents from fractions were identified by gas chromatography-mass spectrometry (GC-MS). The isolates, fractions’ components and their biological activities were first time investigated on C. indica. By in vitro DPPH and ABTS scavenging assays, nordentatin (IC50 = 49.2 and 69.9 µg/mL, respectively) and the fraction Re4 (32.4 and 38.5 µg/mL, respectively) showed the strongest antiradical activities, whereas clausine K presented a moderate and dentatin had negligible antioxidant activity, respectively. The anti-α-amylase activity of C. indica root extracts was mainly attributed to the fraction Re2 which inactivated the enzymatic assay with IC50 of 573.8 µg/mL. Among tested samples, only nordentatin and clausine K were effective in the pancreatic elastase inhibition, however, their influences were trivial. Markedly, clausine K and Re4 performed the most remarkable tyrosinase inhibition with IC50 values of 179.5 and 243.8 µg/mL, respectively, which were in turn 4 and 3 times stronger than myricetin (IC50 = 735.6 µg/mL), a well-known tyrosinase inhibitor. This is the first report affirming clausine K to be a new strong tyrosinase inhibitor. Isolated compounds from C. indica roots were quantified by high-performance liquid chromatography (HPLC), of which, dentatin, nordentatin, and clausine K accounted for 14.74, 6.14, and 1.28 mg/g dry weight. The findings suggest that bioactive constituents from C. indica roots may be potentially employed for the development of antidiabetic, antiaging and cosmetic agents.

ACS Style

Nguyen Van Quan; Tran Dang Xuan; La Hoang Anh; Hoang-Dung Tran. Bio-Guided Isolation of Prospective Bioactive Constituents from Roots of Clausena indica (Dalzell) Oliv. Molecules 2019, 24, 4442 .

AMA Style

Nguyen Van Quan, Tran Dang Xuan, La Hoang Anh, Hoang-Dung Tran. Bio-Guided Isolation of Prospective Bioactive Constituents from Roots of Clausena indica (Dalzell) Oliv. Molecules. 2019; 24 (24):4442.

Chicago/Turabian Style

Nguyen Van Quan; Tran Dang Xuan; La Hoang Anh; Hoang-Dung Tran. 2019. "Bio-Guided Isolation of Prospective Bioactive Constituents from Roots of Clausena indica (Dalzell) Oliv." Molecules 24, no. 24: 4442.

Journal article
Published: 02 December 2019 in Sustainability
Reads 0
Downloads 0

Attempts regarding the improvement and development of novel rice with better quality and higher productivity have been increasing. Among approaches, mutation is a direct alteration on the genome and considered as one of the most beneficial routes to acquire new beneficial traits in rice. An experiment was carried out to explore the effects of N-methyl-N-nitrosourea (MNU) mutation on the antioxidant activities, phytochemical compounds, and momilactones A (MA) and B (MB) in rice. Two rice cultivars, K1 (an original cultivar DT84) and K2 (mutated DT84), were examined. Antioxidant activities, phenolic compounds, and momilactones of the rice grain, husk, and straw portions were measured and quantified. Antioxidant activities were higher in grain and straw of K2, whereas K1 showed greater antioxidant activity in rice husk. Additionally, K2 displayed higher total phenolic contents (TPC) in grain and straw as well as lower of it in the husk, but these variations significantly differed only in the straw portion. An increase in total flavonoid contents (TFC) was observed in the husk of K1, while K2 significantly enhanced TFC in straw. Both MA and MB, two compounds obtaining antidiabetes, anticancer, antimicrobial, antigout, and antiobesity properties, were detected and quantified in grain, husk, and straw of K1 and K2 samples. Generally, the contents of MA were higher than MB in all tested portions of rice crop. MA and MB were higher in straw followed by those in husk and grain, respectively. K2 contained higher amounts of MA and MB in straw and husk, but lower contents in grain compared with those in K1. This study illustrates that MNU mutation can improve grain quality and enhance bioactive compounds in straw, husk, and grain of rice. This approach has the potential to develop functional foods from rice, and therefore help farmers in developing countries to improve value in rice production.

ACS Style

Kifayatullah Kakar; Tran Dang Xuan; Nguyen Van Quan; Imran Khan Wafa; Hoang-Dung Tran; Tran Dang Khanh; Tran Dang Dat. Efficacy of N-Methyl-N-Nitrosourea Mutation on Physicochemical Properties, Phytochemicals, and Momilactones A and B in Rice. Sustainability 2019, 11, 6862 .

AMA Style

Kifayatullah Kakar, Tran Dang Xuan, Nguyen Van Quan, Imran Khan Wafa, Hoang-Dung Tran, Tran Dang Khanh, Tran Dang Dat. Efficacy of N-Methyl-N-Nitrosourea Mutation on Physicochemical Properties, Phytochemicals, and Momilactones A and B in Rice. Sustainability. 2019; 11 (23):6862.

Chicago/Turabian Style

Kifayatullah Kakar; Tran Dang Xuan; Nguyen Van Quan; Imran Khan Wafa; Hoang-Dung Tran; Tran Dang Khanh; Tran Dang Dat. 2019. "Efficacy of N-Methyl-N-Nitrosourea Mutation on Physicochemical Properties, Phytochemicals, and Momilactones A and B in Rice." Sustainability 11, no. 23: 6862.

Journal article
Published: 21 November 2019 in Foods
Reads 0
Downloads 0

We previously reported the inhibitory potentials of momilactones A (MA) and B (MB) against key enzymes related to type 2 diabetes and obesity. In this study, antioxidant and anti-skin-aging activities of MA and MB were investigated and compared with tricin, a well-known antioxidant and antiaging flavonoid in rice. MA, MB, and tricin were purified from rice husk by column chromatography and their biological activities were subsequently assayed by in vitro trials. The contents of MA, MB, and tricin of different commercial rice cultivars in Japan were quantified and confirmed by ultra-performance liquid chromatography-electrospray ionization-mass spectrometry (UPLC-ESI-MS) and high-performance liquid chromatography (HPLC) analyses. The antioxidant assays revealed a synergistic activity of the mixture MA and MB (MAB, 1:1, v/v). In addition, in 2,2’-azino-bis (ABTS) assay, IC50 values of MAB (0.3 mg/mL) and tricin (0.3 mg/mL) was 4-fold and 9-fold greater than that of individual MB (1.3 mg/mL) or MA (2.8 mg/mL), respectively. The in vitro enzymatic assays on pancreatic elastase and tyrosinase indicated that MA and MB were potential to relief skin wrinkles and freckles. In detail, MA exerted higher inhibition on both enzymatic activities (30.9 and 37.6% for elastase and tyrosinase inhibition, respectively) than MB (18.5 and 12.6%) and MAB (32.0 and 19.7%) at a concentration of 2.0 mg/mL. Notably, MA and the mixture MAB exhibited stronger inhibitions on elastase and tyrosinase in comparison with tricin and vanillin. MA, MB, and tricin in rice are potential to develop cosmetics as well as supplements for skin aging treatments.

ACS Style

Nguyen Van Quan; Dam Duy Thien; Tran Dang Khanh; Hoang-Dung Tran; Tran Dang Xuan; Quan; Tran; Xuan. Momilactones A, B, and Tricin in Rice Grain and By-Products are Potential Skin Aging Inhibitors. Foods 2019, 8, 602 .

AMA Style

Nguyen Van Quan, Dam Duy Thien, Tran Dang Khanh, Hoang-Dung Tran, Tran Dang Xuan, Quan, Tran, Xuan. Momilactones A, B, and Tricin in Rice Grain and By-Products are Potential Skin Aging Inhibitors. Foods. 2019; 8 (12):602.

Chicago/Turabian Style

Nguyen Van Quan; Dam Duy Thien; Tran Dang Khanh; Hoang-Dung Tran; Tran Dang Xuan; Quan; Tran; Xuan. 2019. "Momilactones A, B, and Tricin in Rice Grain and By-Products are Potential Skin Aging Inhibitors." Foods 8, no. 12: 602.

Journal article
Published: 30 September 2019 in Vietnam Journal of Science, Technology and Engineering
Reads 0
Downloads 0

The green microalga, Haematococcus pluvialis, is currently cultivated for natural astaxanthin in suspended systems. Immobilised cultivation in a twin-layer (TL) porous substrate bioreactor is a potential revolution in microalgal biotechnology worldwide. For the first time in Vietnam, small-scale (0.05 m2) and large-scale (2 m2) biofilm-based photobioreactor systems arranged at an angle of 150 were successfully designed, assembled, and operated; the temperature, humidity, air, and light conditions for H. pluvialiscultivation were successfully controlled. Studies were conducted of both systems to determine theoptimal storage time of algae after harvest from suspension before inoculation into the TL system, carbon dioxide supply method, light intensity, and initial cell density. In the 0.05 m2 and 2 m2 systems, dry biomass productivity reached 12 g m-2 d-1 (3% astaxanthin content in the dry biomass) and 11.25 g m-2 d-1 (2.8% astaxanthin) after 10 days of cultivation. The 2 m2biofilm-based photobioreactor system provides many advantages in scaling up astaxanthin production from H. pluvialis.

ACS Style

Hoang-Dung Tran; Thanh-Tri Do; Tuan-Loc Le; Minh-Ly Tran Nguyen; Cong-Hoat Pham; Michael Melkonian; Vietnam-United States-Australia Biotech Company Limited; Germany Univeristy Of Cologne. Cultivation of Haematococcus pluvialis for astaxanthin production on angled bench-scale and large-scale biofilm-based photobioreactors. Vietnam Journal of Science, Technology and Engineering 2019, 61, 1 .

AMA Style

Hoang-Dung Tran, Thanh-Tri Do, Tuan-Loc Le, Minh-Ly Tran Nguyen, Cong-Hoat Pham, Michael Melkonian, Vietnam-United States-Australia Biotech Company Limited, Germany Univeristy Of Cologne. Cultivation of Haematococcus pluvialis for astaxanthin production on angled bench-scale and large-scale biofilm-based photobioreactors. Vietnam Journal of Science, Technology and Engineering. 2019; 61 (3):1.

Chicago/Turabian Style

Hoang-Dung Tran; Thanh-Tri Do; Tuan-Loc Le; Minh-Ly Tran Nguyen; Cong-Hoat Pham; Michael Melkonian; Vietnam-United States-Australia Biotech Company Limited; Germany Univeristy Of Cologne. 2019. "Cultivation of Haematococcus pluvialis for astaxanthin production on angled bench-scale and large-scale biofilm-based photobioreactors." Vietnam Journal of Science, Technology and Engineering 61, no. 3: 1.

Journal article
Published: 27 September 2019 in Agriculture
Reads 0
Downloads 0

Mutation technology has been applied more in recent decades to achieve novel products that are not commonly found in nature. An experiment was conducted to examine the effects of an N-methyl-N-nitrosourea (MNU) mutation on the growth, yield, and physicochemical properties of rice. Seeds of two rice cultivars (K1: DT84, and K3: Q5), along with their mutant lines (K2: mutated DT84, and K4: mutated Q5), were sown, and the established seedlings were transplanted to an open field. Ten hills per plot were randomly selected to evaluate growth parameters, yield, and components. Physicochemical attributes, including protein, amylose, and lipid contents, as well as taste score were measured by a quality tester device. The results showed that plant length, tiller number, and panicle length were higher in mutant lines than those of their cultivars. Furthermore, mutant lines took longer to reach heading and maturity stage. The highest panicle number, spikelet number, repined ratio, 1000 grain weight, 1000 brown rice weight, and grain yield were obtained in mutant lines, as compared to cultivars. The greatest grain yield was obtained in the K4 mutant line (11.6 t/ha), while the lowest was recorded in the K1 cultivar (7.7 t/ha). Lower amylose, protein, and lipid contents were observed in mutant lines compared to those in cultivars. The taste score, which increased from 67.7 to 73.7, was found to be correlated with lower amylose, protein, and lipid contents. The mutation approach increased the grain length but decreased the grain width of tested varieties. This study highlights and suggests the importance of MNU mutation in terms of rice yield improvement with preferable quality.

ACS Style

Kifayatullah Kakar; Tran Dang Xuan; Nguyen Van Quan; Imran Khan Wafa; Hoang-Dung Tran; Tran Dang Khanh; Tran Dang Dat. Efficacy of N-methyl-N-nitrosourea (MNU) Mutation on Enhancing the Yield and Quality of Rice. Agriculture 2019, 9, 212 .

AMA Style

Kifayatullah Kakar, Tran Dang Xuan, Nguyen Van Quan, Imran Khan Wafa, Hoang-Dung Tran, Tran Dang Khanh, Tran Dang Dat. Efficacy of N-methyl-N-nitrosourea (MNU) Mutation on Enhancing the Yield and Quality of Rice. Agriculture. 2019; 9 (10):212.

Chicago/Turabian Style

Kifayatullah Kakar; Tran Dang Xuan; Nguyen Van Quan; Imran Khan Wafa; Hoang-Dung Tran; Tran Dang Khanh; Tran Dang Dat. 2019. "Efficacy of N-methyl-N-nitrosourea (MNU) Mutation on Enhancing the Yield and Quality of Rice." Agriculture 9, no. 10: 212.

Journal article
Published: 18 September 2019 in Biology
Reads 0
Downloads 0

The microalga Haematococcus pluvialis is mainly cultivated in suspended systems for astaxanthin production. Immobilized cultivation on a Twin-Layer porous substrate photobioreactor (TL-PSBR) has recently shown promise as an alternative approach. In Vietnam, a TL-PSBR was constructed as a low-angle (15 °) horizontal system to study the cultivation of H. pluvialis for astaxanthin production. In this study, the biomass and astaxanthin productivities and astaxanthin content in the dry biomass were determined using different initial biomass (inoculum) densities (from 2.5 to 10 g dry weight m−2), different storage times of the initial biomass at 4 °C (24, 72, 120 and 168 h) and different light intensities (300–1000 µmol photons m−2 s−1). The optimal initial biomass density at light intensities between 400–600 µmol photons−2 s−1 was 5–7.5 g m−2. Algae stored for 24 h after harvest from suspension for immobilization on the TL-PSBR yielded the highest biomass and astaxanthin productivities, 8.7 g m−2 d−1 and 170 mg m−2 d−1, respectively; longer storage periods decreased productivity. Biomass and astaxanthin productivities were largely independent of light intensity between 300–1000 µmol photons m−2 s−1 but the efficiency of light use per mole photons was highest between 300–500 µmol photons m−2 s−1. The astaxanthin content in the dry biomass varied between 2–3% (w/w). Efficient supply of CO2 to the culture medium remains a task for future improvements of angled TL-PSBRs.

ACS Style

Thanh-Tri Do; Binh-Nguyen Ong; Minh-Ly Nguyen Tran; Doan Nguyen; Michael Melkonian; Hoang-Dung Tran. Biomass and Astaxanthin Productivities of Haematococcus pluvialis in an Angled Twin-Layer Porous Substrate Photobioreactor: Effect of Inoculum Density and Storage Time. Biology 2019, 8, 68 .

AMA Style

Thanh-Tri Do, Binh-Nguyen Ong, Minh-Ly Nguyen Tran, Doan Nguyen, Michael Melkonian, Hoang-Dung Tran. Biomass and Astaxanthin Productivities of Haematococcus pluvialis in an Angled Twin-Layer Porous Substrate Photobioreactor: Effect of Inoculum Density and Storage Time. Biology. 2019; 8 (3):68.

Chicago/Turabian Style

Thanh-Tri Do; Binh-Nguyen Ong; Minh-Ly Nguyen Tran; Doan Nguyen; Michael Melkonian; Hoang-Dung Tran. 2019. "Biomass and Astaxanthin Productivities of Haematococcus pluvialis in an Angled Twin-Layer Porous Substrate Photobioreactor: Effect of Inoculum Density and Storage Time." Biology 8, no. 3: 68.

Journal article
Published: 09 August 2019 in Molecules
Reads 0
Downloads 0

There is currently much interest in finding new phytochemicals among plants and fungi as nature-based alternatives to replace problematic herbicides such as glyphosate, which are preferentially used in agricultural production n. We discovered striking herbicidal potency in Cordyceps militaris (L.) and identified cordycepin as its principal plant growth inhibitor. Cordycepin obtained as an ethyl acetate extract was subjected to column chromatography and evaluated for its bioassay-guided phytotoxic capacity against Raphanus sativus (radish), showing a maximum inhibition on germination and growth of radish (IC50 = 0.052–0.078 mg/mL). Gas chromatography-mass spectrometry (GC-MS) (m/z: 251.2) and liquid chromatography-electrospray ionization-mass spectrometry (LC-ESI-MS) ([M + Na]+ m/z: 274.1; [M + H]+ m/z: 252.1) analyses confirmed cordycepin as the major component of the tested column fraction (55.38%). At 0.04 mg/mL, cordycepin showed 3.8–5.9- and 3.3–3.7-fold greater inhibition of the germination and growth of radish than benzoic acid (BA) and glyphosate, respectively. Compared with BA, isolated cordycepin reduced plant chlorophyll and carotenoid contents (2.0–9.5 -fold), while proline, total phenolic and total flavonoid contents were increased 1.2–1.8-fold. Finally, cordycepin promoted electrolyte leakage and malondialdehyde accumulation in radish aerial parts. Thus, cordycepin successfully isolated from Cordyceps militaris is a highly potent plant growth inhibitor with pending worldwide patent and may become a potential plant-based novel alternative to the disputed glyphosate.

ACS Style

Tran Ngoc Quy; Tran Dang Xuan; Yusuf Andriana; Hoang-Dung Tran; Tran Dang Khanh; Rolf Teschke; Quy; Xuan; Tran. Cordycepin Isolated from Cordyceps militaris: Its Newly Discovered Herbicidal Property and Potential Plant-Based Novel Alternative to Glyphosate. Molecules 2019, 24, 2901 .

AMA Style

Tran Ngoc Quy, Tran Dang Xuan, Yusuf Andriana, Hoang-Dung Tran, Tran Dang Khanh, Rolf Teschke, Quy, Xuan, Tran. Cordycepin Isolated from Cordyceps militaris: Its Newly Discovered Herbicidal Property and Potential Plant-Based Novel Alternative to Glyphosate. Molecules. 2019; 24 (16):2901.

Chicago/Turabian Style

Tran Ngoc Quy; Tran Dang Xuan; Yusuf Andriana; Hoang-Dung Tran; Tran Dang Khanh; Rolf Teschke; Quy; Xuan; Tran. 2019. "Cordycepin Isolated from Cordyceps militaris: Its Newly Discovered Herbicidal Property and Potential Plant-Based Novel Alternative to Glyphosate." Molecules 24, no. 16: 2901.

Journal article
Published: 01 August 2019 in Agriculture
Reads 0
Downloads 0

Rice is an important staple food for Afghans. Its production has been increased, and attention is needed to improve grain quality. Experiments were conducted to evaluate the growth, yield, physicochemical properties, antioxidant activity, and morphological structures of four exotic rice varieties widely grown in Afghanistan (Attai-1, Jalalabad-14, Shishambagh-14, and Zodrass). Antioxidant activities, including 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-azino-bis (3-ethylbenzthiazoline-6-sulphonic acid) (ABTS), of rice grain were determined. A scanning electron microscopic observation was conducted on the cross-cut section of dehulled rice grains. The results showed a wide variation among four rice varieties for growth, grain yield, physicochemical properties, antioxidant activities, and morphology. Tiller and panicle number per hill, 1000-grain weight, grain yield, and antioxidant activities were found to be highest in Jalalabad-14. Attai-1 showed lower amylose, protein, and lipid contents with a high number of perfect grains, consequently enhanced taste point (score of quality). Grain yield, protein, and amylose contents showed a negative correlation with antioxidant activities. Accumulated structures in Attai-1, Shishambagh-14, and Zodrass were normal; however, Jalalabad-14 increased protein bodies and its traces in the amyloplasts. Information on yield potential, grain quality, and nutritional value of these exotic rice varieties may useful for sustainable food provision and nutritional improvement of rice in Afghanistan.

ACS Style

Kifayatullah Kakar; Tran Dang Xuan; Saidajan Abdiani; Imran Khan Wafa; Zubair Noori; Shakeib Attai; Tran Dang Khanh; Hoang-Dung Tran. Morphological Observation and Correlation of Growth and Yield Characteristics with Grain Quality and Antioxidant Activities in Exotic Rice Varieties of Afghanistan. Agriculture 2019, 9, 167 .

AMA Style

Kifayatullah Kakar, Tran Dang Xuan, Saidajan Abdiani, Imran Khan Wafa, Zubair Noori, Shakeib Attai, Tran Dang Khanh, Hoang-Dung Tran. Morphological Observation and Correlation of Growth and Yield Characteristics with Grain Quality and Antioxidant Activities in Exotic Rice Varieties of Afghanistan. Agriculture. 2019; 9 (8):167.

Chicago/Turabian Style

Kifayatullah Kakar; Tran Dang Xuan; Saidajan Abdiani; Imran Khan Wafa; Zubair Noori; Shakeib Attai; Tran Dang Khanh; Hoang-Dung Tran. 2019. "Morphological Observation and Correlation of Growth and Yield Characteristics with Grain Quality and Antioxidant Activities in Exotic Rice Varieties of Afghanistan." Agriculture 9, no. 8: 167.

Review
Published: 27 July 2019 in Molecules
Reads 0
Downloads 0

Plants abound with active ingredients. Among these natural constituents, allelochemicals and signaling chemicals that are released into the environments play important roles in regulating the interactions between plants and other organisms. Allelochemicals participate in the defense of plants against microbial attack, herbivore predation, and/or competition with other plants, most notably in allelopathy, which affects the establishment of competing plants. Allelochemicals could be leads for new pesticide discovery efforts. Signaling chemicals are involved in plant neighbor detection or pest identification, and they induce the production and release of plant defensive metabolites. Through the signaling chemicals, plants can either detect or identify competitors, herbivores, or pathogens, and respond by increasing defensive metabolites levels, providing an advantage for their own growth. The plant-organism interactions that are mediated by allelochemicals and signaling chemicals take place both aboveground and belowground. In the case of aboveground interactions, mediated air-borne chemicals are well established. Belowground interactions, particularly in the context of soil-borne chemicals driving signaling interactions, are largely unknown, due to the complexity of plant-soil interactions. The lack of effective and reliable methods of identification and clarification their mode of actions is one of the greatest challenges with soil-borne allelochemicals and signaling chemicals. Recent developments in methodological strategies aim at the quality, quantity, and spatiotemporal dynamics of soil-borne chemicals. This review outlines recent research regarding plant-derived allelochemicals and signaling chemicals, as well as their roles in agricultural pest management. The effort represents a mechanistically exhaustive view of plant-organism interactions that are mediated by allelochemicals and signaling chemicals and provides more realistic insights into potential implications and applications in sustainable agriculture.

ACS Style

Chui-Hua Kong; Tran Dang Xuan; Tran Dang Khanh; Hoang-Dung Tran; Nguyen Thanh Trung. Allelochemicals and Signaling Chemicals in Plants. Molecules 2019, 24, 2737 .

AMA Style

Chui-Hua Kong, Tran Dang Xuan, Tran Dang Khanh, Hoang-Dung Tran, Nguyen Thanh Trung. Allelochemicals and Signaling Chemicals in Plants. Molecules. 2019; 24 (15):2737.

Chicago/Turabian Style

Chui-Hua Kong; Tran Dang Xuan; Tran Dang Khanh; Hoang-Dung Tran; Nguyen Thanh Trung. 2019. "Allelochemicals and Signaling Chemicals in Plants." Molecules 24, no. 15: 2737.

Journal article
Published: 07 June 2019 in Plants
Reads 0
Downloads 0

Rice husk has been exploited as a potential source of allelochemicals. In this study, four bioactive compounds including momilactone E (ME), 7-ketostigmasterol (7KS), momilactone A (MA), and momilactone B (MB) were isolated by column chromatography (CC) to yield 2.7, 0.3, 11.7, and 8.3 mg/kg rice husk, respectively. The structures of the isolated compounds were identified and confirmed by spectroscopic techniques consisting of 1H and 13C nuclear magnetic resonance (NMR), electrospray ionization mass (ESI), high-resolution mass spectrometry (HR-MS) and infrared spectroscopy (IS). An advanced quantitative method for MA and MB was achieved to increase the detectable yields of MA and MB in rice husk to 51.96 and 42.33 µg/mL, respectively. The inhibitory activities of MA, MB, ME, and 7KS were examined on lettuce (Lactuca sativa), barnyard grass (Echinochloa crus-galli), and tall goldenrod (Solidago altissima) in bioassays. The allelopathic activities of ME and 7KS were compared with those of potent phytoalexin momilactones A (MA) and B (MB), and the standard p-hydroxybenzoic acid (pHA). Results showed that both MA and MB exhibited stronger inhibitory activity than ME and 7KS. MB exerted greater inhibitions than MA but the mixture of MA and MB (1:1, v/v) possessed a similar level of inhibition to MB. On the other hand, although ME and 7KS presented non-significant inhibition, their mixture of ME-7KS (1:1, v/v) displayed a remarkable inhibition on the growth of S. altissima. Findings of this study revealed that MA, MB, and the mixture ME-7KS had the potential to control the invasive plant S. altissima and the noxious paddy weed E. crus-galli in vitro, but their mode of actions should be further investigated.

ACS Style

Nguyen Van Quan; Tran Dang Xuan; Hoang-Dung Tran; Nguyen Thi Dieu Dieu Thuy. Inhibitory Activities of Momilactones A, B, E, and 7-Ketostigmasterol Isolated from Rice Husk on Paddy and Invasive Weeds. Plants 2019, 8, 159 .

AMA Style

Nguyen Van Quan, Tran Dang Xuan, Hoang-Dung Tran, Nguyen Thi Dieu Dieu Thuy. Inhibitory Activities of Momilactones A, B, E, and 7-Ketostigmasterol Isolated from Rice Husk on Paddy and Invasive Weeds. Plants. 2019; 8 (6):159.

Chicago/Turabian Style

Nguyen Van Quan; Tran Dang Xuan; Hoang-Dung Tran; Nguyen Thi Dieu Dieu Thuy. 2019. "Inhibitory Activities of Momilactones A, B, E, and 7-Ketostigmasterol Isolated from Rice Husk on Paddy and Invasive Weeds." Plants 8, no. 6: 159.

Journal article
Published: 04 June 2019 in Medicines
Reads 0
Downloads 0

Background: In this study, column chromatography was applied to separate active fractions from the ethyl acetate extract of Celastrus hindsii, a medicinal plant widely used in Southern China, Northern Vietnam, Myanmar, and Malaysia. Methods: Fourteen fractions from different dilutions of chloroform and methanol were separated by column chromatography and examined for biological activities. Results: It was found that a dilution of 50–70% methanol in chloroform yielded the highest total phenolics, flavonoids, and antioxidant activities (1,1-dipheny1-2-picrylhydrazyl (DPPH), 2,2-azinobis (3-ehtylbenzothiazoline-6-sulfonic acid), diammonium salt (ABTS) radical scavenging activity, and β-carotene bleaching method measured by lipid peroxidation inhibition). In addition, by gas chromatography-mass spectrometry (GC-MS) and electrospray ionization-mass spectrometry (ESI-MS) analyses, fifteen principal compounds from bioactive fractions belonging to fatty acids, amides, flavonoids, sterols, terpenes, and phenols were identified. Of these compounds, α-amyrin, β-amyrin, hydrazine carboxamide, hexadecanoic acid, fucosterol, (3β)-D:C-friedours-7-en-3-ol, rutin, and 2-hydroxy-1-ethyl ester accounted for maximal quantities, whilst concentrations of other constituents were

ACS Style

Tran Duc Viet; Tran Dang Xuan; Truong Mai Van; Yusuf Andriana; Ramin Rayee; Hoang-Dung Tran. Comprehensive Fractionation of Antioxidants and GC-MS and ESI-MS Fingerprints of Celastrus hindsii Leaves. Medicines 2019, 6, 64 .

AMA Style

Tran Duc Viet, Tran Dang Xuan, Truong Mai Van, Yusuf Andriana, Ramin Rayee, Hoang-Dung Tran. Comprehensive Fractionation of Antioxidants and GC-MS and ESI-MS Fingerprints of Celastrus hindsii Leaves. Medicines. 2019; 6 (2):64.

Chicago/Turabian Style

Tran Duc Viet; Tran Dang Xuan; Truong Mai Van; Yusuf Andriana; Ramin Rayee; Hoang-Dung Tran. 2019. "Comprehensive Fractionation of Antioxidants and GC-MS and ESI-MS Fingerprints of Celastrus hindsii Leaves." Medicines 6, no. 2: 64.

Journal article
Published: 20 May 2019 in Phytotaxa
Reads 0
Downloads 0

The genus Aspidistra Ker-Gawler (1822 plate 628), overlooked for decades, is recently remarkably fast growing. During the past decade, about 90 species new to science were discovered and described, mainly from southern China, Vietnam, and Laos. With its diversity in flower morphology Aspidistra is among the most spectacular genera of Monocotyledons. Vietnam turned out to be especially rich in Aspidistra species (Tillich 2014), and at, least 30 additional species were discovered and described recently in this country (Averyanov & Tillich 2014, 2015, 2016, 2017, Leong-Skornickova et al. 2014, Vislobokov et al. 2014a, b, 2016a, b, 2017, Vislobokov 2015, 2016, Olivier 2015, Averyanov et al. 2016, 2017, 2018a, b, Nguyen et al. 2017, Tillich et al. 2017, Tillich & Averyanov 2018). Meanwhile, the diversity of the genus in Vietnam remains insufficiently inventoried. Below we describe three more new species from central Vietnam.

ACS Style

Leonid V. Averyanov; Tuan Anh Le; Khang Sinh Nguyen; Hans Juergen Tillich; Danh Duc Nguyen; Le Tuan Anh Hoang; Hoang-Dung Tran; Pham Thi Thanh Dat; Tatiana V. Maisak. Aspidistra erosa, A. sarcantha, and A. verruculosa (Asparagaceae), three new species from Vietnam. Phytotaxa 2019, 404, 102 -110.

AMA Style

Leonid V. Averyanov, Tuan Anh Le, Khang Sinh Nguyen, Hans Juergen Tillich, Danh Duc Nguyen, Le Tuan Anh Hoang, Hoang-Dung Tran, Pham Thi Thanh Dat, Tatiana V. Maisak. Aspidistra erosa, A. sarcantha, and A. verruculosa (Asparagaceae), three new species from Vietnam. Phytotaxa. 2019; 404 (3):102-110.

Chicago/Turabian Style

Leonid V. Averyanov; Tuan Anh Le; Khang Sinh Nguyen; Hans Juergen Tillich; Danh Duc Nguyen; Le Tuan Anh Hoang; Hoang-Dung Tran; Pham Thi Thanh Dat; Tatiana V. Maisak. 2019. "Aspidistra erosa, A. sarcantha, and A. verruculosa (Asparagaceae), three new species from Vietnam." Phytotaxa 404, no. 3: 102-110.

Journal article
Published: 15 May 2019 in Molecules
Reads 0
Downloads 0

In this study, we evaluated antioxidant, antihyperuricemic, and herbicidal activities of essential oils (EOs) from Piper cubeba Bojer and Piper nigrum L.; two pepper species widely distributed in tropics, and examined their chemical compositions. Dried berries of P. cubeba and P. nigrum were hydro-distilled to yield essential oil (EO) of 1.23 and 1.11% dry weight, respectively. In the antioxidant assay, the radical scavenging capacities of P. cubeba EO against DPPH and ABTS free radicals were 28.69 and 24.13% greater than P. nigrum, respectively. In the antihyperuricemic activity, P. cubeba EO also exhibited stronger inhibitory effects on xanthine oxidase (IC50 = 54.87 µg/mL) than P. nigrum EO (IC50 = 77.11 µg/mL). In the herbicidal activity, P. cubeba EO showed greater inhibition on germination and growth of Bidens pilosa and Echinochloa crus-galli than P. nigrum EO. Besides, P. cubeba EO decreased 15.98–73.00% of photosynthesis pigments of B. pilosa and E. crus-galli, while electrolyte leakages, lipid peroxidations, prolines, phenolics, and flavonoids contents were increased 10.82–80.82% at 1.93 mg/mL dose. Gas chromatography-mass spectrometry (GC-MS) and liquid chromatography-electrospray ionization-mass spectrometry (LC-ESI-MS) analyses revealed that P. nigrum and P. cubeba EOs principally possessed complex mixtures of monoterpenes and sesquiterpenes. Terpinen-4-ol (42.41%), α-copaene (20.04%), and γ-elemene (17.68%) were the major components of P. cubeba EO, whereas β-caryophyllene (51.12%) and β-thujene (20.58%) were the dominant components of P. nigrum EO. Findings of this study suggest both P. cubeba and P. nigrum EOs were potential to treat antioxidative stress and antihyperuricemic related diseases. In addition, the EOs of the two plants may be useful to control B. pilosa and E. crus-galli, the two invasive and problematic weeds in agriculture practice.

ACS Style

Yusuf Andriana; Tran Dang Xuan; Tran Ngoc Quy; Hoang-Dung Tran; Quang-Tri Le. Biological Activities and Chemical Constituents of Essential Oils from Piper cubeba Bojer and Piper nigrum L. Molecules 2019, 24, 1876 .

AMA Style

Yusuf Andriana, Tran Dang Xuan, Tran Ngoc Quy, Hoang-Dung Tran, Quang-Tri Le. Biological Activities and Chemical Constituents of Essential Oils from Piper cubeba Bojer and Piper nigrum L. Molecules. 2019; 24 (10):1876.

Chicago/Turabian Style

Yusuf Andriana; Tran Dang Xuan; Tran Ngoc Quy; Hoang-Dung Tran; Quang-Tri Le. 2019. "Biological Activities and Chemical Constituents of Essential Oils from Piper cubeba Bojer and Piper nigrum L." Molecules 24, no. 10: 1876.