This page has only limited features, please log in for full access.
The isolation of acid-soluble collagen (ASC) from by-products of snakehead fish (Channa striata), including skin and the mixture of skin and scale, has been investigated. The recovery yield of fish skin ASC (13.6%) was higher than ASC from fish skin and scale (12.09%). Both ASCs were identified as type I collagen and showed maximal solubility at pH 2. Collagen samples from the mixture of skin and scale had higher imino acid content (226 residues/1000 residues) and lower wavenumber in the amide I and amide III region (1642 and 1203 cm−1, respectively) than the fish skin ASC (the imino acid content was 220 residues/1000 residues and the wavenumber in the amide I and amide III were 1663 and 1206 cm−1, respectively. The difference scanning calorimeter (DSC) showed higher thermal stability in ASC from the mixture of skin and scale (Td of 35.78 °C) than fish skin ASC (34.21 °C). From the result, the denaturation temperature of ASC had a close relationship with the content of imino acid as well as with the degradation of α-helix in amide I and III. These results suggest that collagen could be obtained effectively from snakehead fish by-products and has potential as a realistic alternative to mammalian collagens.
Thi Truong; Van Nguyen; Thanh Tran; Thi Le. Characterization of Acid-Soluble Collagen from Food Processing By-Products of Snakehead Fish (Channa striata). Processes 2021, 9, 1188 .
AMA StyleThi Truong, Van Nguyen, Thanh Tran, Thi Le. Characterization of Acid-Soluble Collagen from Food Processing By-Products of Snakehead Fish (Channa striata). Processes. 2021; 9 (7):1188.
Chicago/Turabian StyleThi Truong; Van Nguyen; Thanh Tran; Thi Le. 2021. "Characterization of Acid-Soluble Collagen from Food Processing By-Products of Snakehead Fish (Channa striata)." Processes 9, no. 7: 1188.
Folk experiences suggest natural products in Tetradium ruticarpum can be effective inhibitors towards diabetes-related enzymes. The compounds were experimentally isolated, structurally elucidated, and tested in vitro for their inhibition effects on tyrosine phosphatase 1B (PTP1B) and α-glucosidase (3W37). Density functional theory and molecular docking techniques were utilized as computational methods to predict the stability of the ligands and simulate interaction between the studied inhibitory agents and the targeted proteins. Structural elucidation identifies two natural products: 2-heptyl-1-methylquinolin-4-one (1) and 3-[4-(4-methylhydroxy-2-butenyloxy)-phenyl]-2-propenol (2). In vitro study shows that the compounds (1 and 2) possess high potentiality for the inhibition of PTP1B (IC50 values of 24.3 ± 0.8, and 47.7 ± 1.1 μM) and α-glucosidase (IC50 values of 92.1 ± 0.8, and 167.4 ± 0.4 μM). DS values and the number of interactions obtained from docking simulation highly correlate with the experimental results yielded. Furthermore, in-depth analyses of the structure–activity relationship suggest significant contributions of amino acids Arg254 and Arg676 to the conformational distortion of PTP1B and 3W37 structures overall, thus leading to the deterioration of their enzymatic activity observed in assay-based experiments. This study encourages further investigations either to develop appropriate alternatives for diabetes treatment or to verify the role of amino acids Arg254 and Arg676.
Dao-Cuong To; Thanh Bui; Nguyen Nhung; Quoc-Toan Tran; Thi-Thuy Do; Manh-Hung Tran; Phan-Phuoc Hien; Truong-Nhan Ngu; Phan-Tu Quy; The-Hung Nguyen; Huu-Tho Nguyen; Tien-Dung Nguyen; Phi-Hung Nguyen. On the Inhibitability of Natural Products Isolated from Tetradium ruticarpum towards Tyrosine Phosphatase 1B (PTP1B) and α-Glucosidase (3W37): An In Vitro and In Silico Study. Molecules 2021, 26, 3691 .
AMA StyleDao-Cuong To, Thanh Bui, Nguyen Nhung, Quoc-Toan Tran, Thi-Thuy Do, Manh-Hung Tran, Phan-Phuoc Hien, Truong-Nhan Ngu, Phan-Tu Quy, The-Hung Nguyen, Huu-Tho Nguyen, Tien-Dung Nguyen, Phi-Hung Nguyen. On the Inhibitability of Natural Products Isolated from Tetradium ruticarpum towards Tyrosine Phosphatase 1B (PTP1B) and α-Glucosidase (3W37): An In Vitro and In Silico Study. Molecules. 2021; 26 (12):3691.
Chicago/Turabian StyleDao-Cuong To; Thanh Bui; Nguyen Nhung; Quoc-Toan Tran; Thi-Thuy Do; Manh-Hung Tran; Phan-Phuoc Hien; Truong-Nhan Ngu; Phan-Tu Quy; The-Hung Nguyen; Huu-Tho Nguyen; Tien-Dung Nguyen; Phi-Hung Nguyen. 2021. "On the Inhibitability of Natural Products Isolated from Tetradium ruticarpum towards Tyrosine Phosphatase 1B (PTP1B) and α-Glucosidase (3W37): An In Vitro and In Silico Study." Molecules 26, no. 12: 3691.
Oysters are widely distributed worldwide, but are mainly concentrated in tropics and subtropics. Total lipid (TL), fatty acid (FA) composition of TL and polar lipid (PoL) fractions, phospholipid (PL) class, and molecular species composition in soft tissues of Crassostrea lugubris were investigated for the first time from Vietnam. Phosphatidylglycolic acid (PGA) is the new phospholipid class first identified in marine species in general and Crassostrea lugubris in particular. Main eight classes of PL were determined in PoL fraction: diphosphatidylglycerol (DPG), phosphatidylethanolamine (PE), phosphatidylcholine (PC), phosphatidylinositol (PI), phosphatidylserine (PS), ceramide aminoethylphosphonate (CAEP), CAEP with hydroxylated FAs (CAEP-OH), and lysophosphatidylcholine. PE and PC accounted for approximately 63% of total known PL. Polyunsaturated FAs accounted for more than 30% of TL. Ninety molecular species of glycerophospholipids, including PGA, PE, PC, PS, PI, DPG, and PG, and sphingophosphonolipids (CAEP) were identified in PoL. Alkenyl-acyl forms of glycerophospholipids were predominated in the molecular species of PGA, PE, and PS. PGA 38:1 (p18:0/20:1), PE 40:6 (p18:0/22:6 and p18:1/22:5), PC 30:0 (14:0/16:0), PS 38:1 (p18:0/20:1), PI 40:5 (20:1/20:4), PG 32:0 (16:0/16:0), DPG 88:24 (22:6/22:6/22:6/22:6), and CAEP 34:2 (d18:2/16:0) were major molecular species.
Thanh Tra Thi Le; Quoc Toan Tran; PeteVladimirovich Velansky; Tien Duc Dam; Long Giang Bach; Long Quoc Pham. Lipid composition and molecular species of phospholipid in oyster Crassostrea lugubris (Sowerby, 1871) from Lang Co Beach, Hue Province, Vietnam. Food Science & Nutrition 2021, 9, 4199 -4210.
AMA StyleThanh Tra Thi Le, Quoc Toan Tran, PeteVladimirovich Velansky, Tien Duc Dam, Long Giang Bach, Long Quoc Pham. Lipid composition and molecular species of phospholipid in oyster Crassostrea lugubris (Sowerby, 1871) from Lang Co Beach, Hue Province, Vietnam. Food Science & Nutrition. 2021; 9 (8):4199-4210.
Chicago/Turabian StyleThanh Tra Thi Le; Quoc Toan Tran; PeteVladimirovich Velansky; Tien Duc Dam; Long Giang Bach; Long Quoc Pham. 2021. "Lipid composition and molecular species of phospholipid in oyster Crassostrea lugubris (Sowerby, 1871) from Lang Co Beach, Hue Province, Vietnam." Food Science & Nutrition 9, no. 8: 4199-4210.
In this study, the hydrodistillation process of lemon peel essential oil was modeled and the obtained essential oil was determined for chemical composition. The modeling was done through non-stationary diffusion model and first-order kinetic model (i.e., fixed diffusion model). The results revealed that the extraction process seemed to closely follow the simultaneous washing and diffusion model (non-stationary diffusion) and the highest yield was obtained at extraction conditions including 3: 1 mL/g of water-to-materials ratio, 204 W of heating capacity and extraction time of 60 min. At optimum conditions, essential oils obtained at the yield of 3.9% (v/w) and its composition was analyzed by GC–MS. The composition of lemon peel essential oil was predominated with Limonene (62.17%) and ϒ-Terpinene (12.356%), which characterizes the scent of this essential oil as well as its increased commercial value.
Tan Phat Dao; Ngoc Quyen Tran; Thanh Truc Tran; Van Tan Lam. Assessing the kinetic model on extraction of essential oil and chemical composition from lemon peels (Citrus aurantifolia) by hydro-distillation process. Materials Today: Proceedings 2021, 1 .
AMA StyleTan Phat Dao, Ngoc Quyen Tran, Thanh Truc Tran, Van Tan Lam. Assessing the kinetic model on extraction of essential oil and chemical composition from lemon peels (Citrus aurantifolia) by hydro-distillation process. Materials Today: Proceedings. 2021; ():1.
Chicago/Turabian StyleTan Phat Dao; Ngoc Quyen Tran; Thanh Truc Tran; Van Tan Lam. 2021. "Assessing the kinetic model on extraction of essential oil and chemical composition from lemon peels (Citrus aurantifolia) by hydro-distillation process." Materials Today: Proceedings , no. : 1.
Dietary inclusion of canthaxanthin, a common carotenoid pigment, has been long practiced in aquaculture to give the favorable flesh color in farmed salmonids. However, carotenoids are associated with limited solubility and poor physicochemical stability, and their dose in fish feed is widely regulated. In this study, we included canthaxanthin- and α-tocopherol-loaded liposomes into fish diets and evaluated the effects of supplemented fish feed on fish growth, color, nutrition, and canthaxanthin deposition in fillets of cultured rainbow trout (Oncorhynchus mykiss). The liposomes were fabricated using lecithin as phospholipids with the initial concentrations (IC = mcanthaxanthin/mlipids, % wt/wt) of canthaxanthin at 0.1%, 0.5%, and 1.0%. Particle size characterization showed that liposome mean sizes were 109.70 ± 6.36, 105.10 ± 8.41, and 109.20 ± 5.66 nm (mean ± SD; n = 3), respectively, corresponding with liposomes synthesized at canthaxanthin IC = 0.1%, IC = 0.5%, and IC = 1%. The polydispersity index (PDI) of all samples remained lower than 0.2. There were no significant differences in the mean size and PDI between blank lecithin liposome and canthaxanthin- and α-tocopherol-loaded liposomes. The encapsulation efficiency of canthaxanthin- and α-tocopherol-loaded liposomes decreased when increasing the concentration of canthaxanthin in lecithin liposomes, with EE% values of IC = 0.1%, IC = 0.5%, and IC = 1% being 85.3 ± 2.1, 72.9 ± 1.8, and 55.3 ± 2.6, respectively. For fish growth, at the end of the experiment, final weight was significantly higher in fish fed with diet supplemented with 1 g/kg canthaxanthin- and α-tocopherol-loaded liposomes (IC = 0.5%) in comparison to other experimental control groups. The difference in color of the salmon muscle was most apparent after two months of feeding. However, after three months, there was no noticeable change in the color score of the fish muscle, indicating saturation of color of the fish muscle. The above results suggest the potential of canthaxanthin- and a-tocopherol-loaded liposomes as the red pigment in fish aquaculture.
Tran Quoc Toan; Viet Anh Dang; Quoc Long Pham; Phi Hung Nguyen; Thu Huong Trinh; Thuy Ha Tran; Van Thinh Do; Van Khoi Le; Xuan Luong Ngo; Tri Nhut Pham; Hai Ha Pham Thi; Manh Do Van; Duy Chinh Nguyen; Thanh Duong Nguyen. Effects of Dietary Inclusion of Canthaxanthin- and α-Tocopherol-Loaded Liposomes on Growth and Muscle Pigmentation of Rainbow Trout (Oncorhynchus mykiss). Journal of Food Quality 2021, 2021, 1 -11.
AMA StyleTran Quoc Toan, Viet Anh Dang, Quoc Long Pham, Phi Hung Nguyen, Thu Huong Trinh, Thuy Ha Tran, Van Thinh Do, Van Khoi Le, Xuan Luong Ngo, Tri Nhut Pham, Hai Ha Pham Thi, Manh Do Van, Duy Chinh Nguyen, Thanh Duong Nguyen. Effects of Dietary Inclusion of Canthaxanthin- and α-Tocopherol-Loaded Liposomes on Growth and Muscle Pigmentation of Rainbow Trout (Oncorhynchus mykiss). Journal of Food Quality. 2021; 2021 ():1-11.
Chicago/Turabian StyleTran Quoc Toan; Viet Anh Dang; Quoc Long Pham; Phi Hung Nguyen; Thu Huong Trinh; Thuy Ha Tran; Van Thinh Do; Van Khoi Le; Xuan Luong Ngo; Tri Nhut Pham; Hai Ha Pham Thi; Manh Do Van; Duy Chinh Nguyen; Thanh Duong Nguyen. 2021. "Effects of Dietary Inclusion of Canthaxanthin- and α-Tocopherol-Loaded Liposomes on Growth and Muscle Pigmentation of Rainbow Trout (Oncorhynchus mykiss)." Journal of Food Quality 2021, no. : 1-11.
In this study, the specific chemical composition of Seedless Lemon (Citrus latifolia) grown in Hau Giang Province, Vietnam was determined. The experiment was conducted based on the baseline methods referenced from previous studies. The results of the component survey show that, in Persian Lime, the acidity is 0.637 ± 0.08 g/L and 4.916 ± 0.03 g/L respectively with lemon peel and lemon juice (pH is 4.5 and 2 respectively). The basic components are also determined with the parameters corresponding to lemon peel and lemon juice including: Brix 2% and 8%, ash 1,780 ± 0.004% and 0.314 ± 0.002%, lipid content 2.93 ± 0.044% and 0.542 ± 0.051%. In which, the content of vitamin C in lemon juice is quite good, reaching 8.392 ± 0.28 mg/g. This research helps shape the basic parameters of local Vietnamese raw materials, thereby laying the premise for the development of related products.
T Pham; N T P Nguyen; D V Dinh; N Th Kieu; L G Bach; H X Phong; N V Muoi; T T Truc. Evaluate the Chemical Composition of Peels and Juice of Seedless Lemon (Citrus latifolia) Grown in Hau Giang Province, Vietnam. IOP Conference Series: Materials Science and Engineering 2020, 991, 012127 .
AMA StyleT Pham, N T P Nguyen, D V Dinh, N Th Kieu, L G Bach, H X Phong, N V Muoi, T T Truc. Evaluate the Chemical Composition of Peels and Juice of Seedless Lemon (Citrus latifolia) Grown in Hau Giang Province, Vietnam. IOP Conference Series: Materials Science and Engineering. 2020; 991 (1):012127.
Chicago/Turabian StyleT Pham; N T P Nguyen; D V Dinh; N Th Kieu; L G Bach; H X Phong; N V Muoi; T T Truc. 2020. "Evaluate the Chemical Composition of Peels and Juice of Seedless Lemon (Citrus latifolia) Grown in Hau Giang Province, Vietnam." IOP Conference Series: Materials Science and Engineering 991, no. 1: 012127.
The confectionery industry produces a wide variety of sugary products for children. The juice of soursop (Annona muricata L.) was selected as a flavorant to produce jelly candies with high nutritional value. Addition of food additives such as gelatin, pectin and malt is essential in jelly candy production. Therefore, the present study investigated the effect of adding different concentrations of pectin (0.2-0.8%), malt (12-18%) and gelatin (12-18%) to the elasticity and color change of the resulted soursop jelly candy. Results have shown that a combination of 14% gelatin, 0.4% pectin and 12% malt produced the candies with highest elasticity. Increasing malt concentration further was found to reduce the candy elasticity. The jelly candies also showed oxidative browning after four days of preservation. The sensory acceptance value is feasible and is higher than the commercial circulation point. The present study was the first to produce jelly candy from soursop juice, introducing a high-value confectionery product that could be a promising candidate for industrial-scaled production. Further studies on antioxidant activity, as well as safety and nutritional value of the product are also required.
T T Y Nhi; N D Vu; N N Quyen; P V Thinh; N T M Tho; T T Truc. The effect of malt, pectin, and gelatin concentrations on elasticity, color and sensory evaluation of soursop (Annona muricata L.) jelly candy. IOP Conference Series: Materials Science and Engineering 2020, 991, 012013 .
AMA StyleT T Y Nhi, N D Vu, N N Quyen, P V Thinh, N T M Tho, T T Truc. The effect of malt, pectin, and gelatin concentrations on elasticity, color and sensory evaluation of soursop (Annona muricata L.) jelly candy. IOP Conference Series: Materials Science and Engineering. 2020; 991 (1):012013.
Chicago/Turabian StyleT T Y Nhi; N D Vu; N N Quyen; P V Thinh; N T M Tho; T T Truc. 2020. "The effect of malt, pectin, and gelatin concentrations on elasticity, color and sensory evaluation of soursop (Annona muricata L.) jelly candy." IOP Conference Series: Materials Science and Engineering 991, no. 1: 012013.
Persicaria odorata Polygonaceae is a widely used herb in Asia. It contains several interesting bioactive components, and possesses properties that promote health. This is an important medicinal plant used to treat inflammation and swelling, diarrhea and excessive bleeding, and so on. Base on phytochemical analysis, the Persicaria odorata leaves contained lots compounds such as alkaloids, tannins, anthraquinone, flavonoids, terpenoids, coumarins, saponins and reducing compounds. The presence of those phytochemicals in this herbs indicated its potential medicinal effects, along with various vital biological and physiological properties. The leaves were extracted using ethanol and water to produce the respective extracts. The total phenolic and flavonoids content of each extract were determined by the Folin-Ciocalteu method and the aluminum chloride reagent, respectively. The ethanolic extract from leaves of Persicaria odorata showed higher total phenolic (58.56 ± 3.86 µgGAE/mg) and flavonoid contents (70.65 ± 4.14 µgQE/mg) than the aqueous extract. The percentage of radical scavenging activity was determined using radical scavenging assay with DPPH and ABTS. The ethanol extract of Persicaria odorata leaves had a high antioxidant activity with an IC50 of 311.26 ± 3.06 µg/mL DPPH and 167.66 ± 6.67 ABTS. The presence study showed that in ethanolic and aqueous extracts the medicinal potential of Persicaria odorata leaves and the positive relation between the total content of polyphenols and antioxidant activities.
V T Nguyen; N Q Nguyen; T T Truc. Phytochemical Screening, Antioxidant Activities, Total Phenolics and Flavonoids content of Leaves from Persicaria odorata Polygonaceae. IOP Conference Series: Materials Science and Engineering 2020, 991, 012029 .
AMA StyleV T Nguyen, N Q Nguyen, T T Truc. Phytochemical Screening, Antioxidant Activities, Total Phenolics and Flavonoids content of Leaves from Persicaria odorata Polygonaceae. IOP Conference Series: Materials Science and Engineering. 2020; 991 (1):012029.
Chicago/Turabian StyleV T Nguyen; N Q Nguyen; T T Truc. 2020. "Phytochemical Screening, Antioxidant Activities, Total Phenolics and Flavonoids content of Leaves from Persicaria odorata Polygonaceae." IOP Conference Series: Materials Science and Engineering 991, no. 1: 012029.
Soursop, due to its nutritional properties, is gaining attention in the food and beverage industry. Soursop nectar, as a beverage, provides vitamins, antioxidants, and energy. Studies on how additives could alter sensory properties of the product might satisfy the needs of consumers for products with better visual qualities. The mixing of Pectin (PT), carboxymethyl cellulose (CMC), and xanthan gum (XG) directly affects the viscosity in the nectar. Optimization by response surface methodology showed that PT-CMC and XG-CMC interactions were significant at <0.05. The coefficient of determination of the model was high (R2 = 0.9847). The lowest viscosity of the soursop nectar was 70 mPa.s, achieved by following contents of additives: 0.01378% of PT, 0.0071963% of CMC and 0.0051443% of XG.
Nhi Yen Thi Tran; Dao Tan Phat; Van Thinh Pham; Nguyen Nhan Quyen; Huynh Ngoc Thanh Tam; Tran Thanh Truc. Formulation for a Soursop (Annona muricata L.) Nectar Supplement using Response Surface Methodology for Optimization of Food Thickener. IOP Conference Series: Materials Science and Engineering 2020, 991, 012061 .
AMA StyleNhi Yen Thi Tran, Dao Tan Phat, Van Thinh Pham, Nguyen Nhan Quyen, Huynh Ngoc Thanh Tam, Tran Thanh Truc. Formulation for a Soursop (Annona muricata L.) Nectar Supplement using Response Surface Methodology for Optimization of Food Thickener. IOP Conference Series: Materials Science and Engineering. 2020; 991 (1):012061.
Chicago/Turabian StyleNhi Yen Thi Tran; Dao Tan Phat; Van Thinh Pham; Nguyen Nhan Quyen; Huynh Ngoc Thanh Tam; Tran Thanh Truc. 2020. "Formulation for a Soursop (Annona muricata L.) Nectar Supplement using Response Surface Methodology for Optimization of Food Thickener." IOP Conference Series: Materials Science and Engineering 991, no. 1: 012061.
Food diversification is increasingly approaching customer needs. Tea processing field brings a lot of health. The present study has mixed the soursop leaves tea with stevia, chrysanthemum, rose, and licorice to produce an effective mixture with improved biological activities and flavors. Survey results showed that high TPC content was present in chrys (4.01 ± 0.03 mg/g DW) entailed an increasing concentration when mixed and vice versa. In most mixtures, free-radical scavenging by DPPH and ABTS in sousop leaves tea mixtures remained unchanged (ranging from 0.5-1.5 mg/g DW). The color brightness value in CIE system is highly dependent on soursop leaves tea (34.52 ± 0.71 in L*). These findings provide helpful insight to combinations of tea and common herbs for daily use. Further studies on toxicology and health benefits of these tea combinations would be on demand.
T T Y Nhi; N N Quyen; P V Thinh; N T Bay; T T Truc. Determination of Phenolic Compounds and Antioxidant activity of the Leaves of Soursop (Annona muricata L.) mixed with Various Herbal. IOP Conference Series: Materials Science and Engineering 2020, 991, 012025 .
AMA StyleT T Y Nhi, N N Quyen, P V Thinh, N T Bay, T T Truc. Determination of Phenolic Compounds and Antioxidant activity of the Leaves of Soursop (Annona muricata L.) mixed with Various Herbal. IOP Conference Series: Materials Science and Engineering. 2020; 991 (1):012025.
Chicago/Turabian StyleT T Y Nhi; N N Quyen; P V Thinh; N T Bay; T T Truc. 2020. "Determination of Phenolic Compounds and Antioxidant activity of the Leaves of Soursop (Annona muricata L.) mixed with Various Herbal." IOP Conference Series: Materials Science and Engineering 991, no. 1: 012025.
Vietnam is a leading producer and exporter of products harvested from plants of the family Piperaceae such as green pepper, black pepper, red pepper and white pepper. In this study, an attempt is made to examine the essential oil extraction process with the material of white pepper grown and harvested in Phu Quoc island, Vietnam. To maximize essential oil production, three factors consisting the ratio of materials and solvents, extraction time and extraction temperature were selected and optimized. The surface response methodology optimization resulted the highest yield of 3.6%, achieved at the ratio of material and water ratio of 1:20 g/g, extraction time of 96 min and at 130 ºC. A high F values, low P values (< 0.0001), the determination coefficient (R2 = 0.9993) and a non-significant lack of fit suggested a strong correlation between actual and predicted values of the responses. The essential oil obtained was determined for chemical composition by gas chromatography-mass spectrometry (GC-MS) method. The GC-MS results showed that major constituents existing in the oil sample were limonene, 3-carene, sabinene, β-pinene, α-pinene and α-phellandrene, accounting for 27.059, 23.345, 17.903, 9.996, 5.167 and 4.588%, respectively.
Thien Hien Tran; Thi Cam Quyen Ngo; Hoang Duy Ngo; Nguyen Huu Thuan Anh; Ton Nu Thuy An; Pham Minh Quan; Tran Quoc Toan. Optimization of Essential Oil Extraction Process of White Pepper (Piper nigrum L.) Harvested in Phu Quoc Island, Kien Giang Province, Vietnam. Asian Journal of Chemistry 2020, 32, 2707 -2712.
AMA StyleThien Hien Tran, Thi Cam Quyen Ngo, Hoang Duy Ngo, Nguyen Huu Thuan Anh, Ton Nu Thuy An, Pham Minh Quan, Tran Quoc Toan. Optimization of Essential Oil Extraction Process of White Pepper (Piper nigrum L.) Harvested in Phu Quoc Island, Kien Giang Province, Vietnam. Asian Journal of Chemistry. 2020; 32 (11):2707-2712.
Chicago/Turabian StyleThien Hien Tran; Thi Cam Quyen Ngo; Hoang Duy Ngo; Nguyen Huu Thuan Anh; Ton Nu Thuy An; Pham Minh Quan; Tran Quoc Toan. 2020. "Optimization of Essential Oil Extraction Process of White Pepper (Piper nigrum L.) Harvested in Phu Quoc Island, Kien Giang Province, Vietnam." Asian Journal of Chemistry 32, no. 11: 2707-2712.
Baeckea frutescens is a tropical plant with great medicinal potential. The oil of B. frutescens has high inhibitory, antibacterial and antifungal properties, especially against Staphylococcus aureus strains. The oil of B. frutescens has a spicy, bitter and warm properties that can cure aches and pains. In this study, the essential oils were obtained by hydrodistillation and the chemical analysis of B. frutescens essential oils was carried out using GC-MS. It was revealed that main components of leaf oil B. frutescens included 26 compounds such as tasmanone (21.46%), β-pinene (15.64%), 1,8-cineole (11.32%), α-thujene (8.74%), α-pinene (7.18%), linalool (7.44%), terpinen-4-ol (5.11%), α-terpineol (4.46%), γ-terpinene (3.37%), o-cymene (2.72%). The results open new directions in the application of compounds in B. frutescens essential oils to expand research and development of pharmaceutical, cosmetic and food industries.
Tran Quoc Toan; Chu Quang Truyen; Pham Thi Hong Minh; Pham Quoc Long; Luu Van Huyen; Tran Thi Kim Ngan; Pham Thi Hai Ha. Chemical Composition of the Essential Oil Extracted from Baeckea frutescens L. Harvested in Hai Duong Province, Vietnam using GC-MS. Asian Journal of Chemistry 2020, 32, 2251 -2254.
AMA StyleTran Quoc Toan, Chu Quang Truyen, Pham Thi Hong Minh, Pham Quoc Long, Luu Van Huyen, Tran Thi Kim Ngan, Pham Thi Hai Ha. Chemical Composition of the Essential Oil Extracted from Baeckea frutescens L. Harvested in Hai Duong Province, Vietnam using GC-MS. Asian Journal of Chemistry. 2020; 32 (9):2251-2254.
Chicago/Turabian StyleTran Quoc Toan; Chu Quang Truyen; Pham Thi Hong Minh; Pham Quoc Long; Luu Van Huyen; Tran Thi Kim Ngan; Pham Thi Hai Ha. 2020. "Chemical Composition of the Essential Oil Extracted from Baeckea frutescens L. Harvested in Hai Duong Province, Vietnam using GC-MS." Asian Journal of Chemistry 32, no. 9: 2251-2254.
This study aims to determine the chemical composition of essential oils extracted from Schefflera octophylla L. harvested in Pha Dong commune, Chi Linh district, Hai Duong province, Vietnam. To determine the concentration of volatile components, GC - MS was performed. The results showed that the content of volatile substances occupied 97.07% of essential oils. Some main ingredients having medicinal properties were myrcene (9.0%), cis-β-elemene (6.67%), E-caryophylene (β-caryophylene) (24.91%), α-selinene (6.30%), β-selinene (7.29%). This study opens new potentials in the application of chemical ingredients in the fields of pharmaceuticals, cosmetics, agriculture and in some therapeutic activities.
Tran Quoc Toan; Pham Quoc Long; Pham Minh Quan; Tran Thi Kim Gan; Luu Van Huyen; Pham Thi Hai Ha. Chemical Composition in Essential Oils of Schefflera octophylla L. Harvested in Hai Duong Province, Vietnam. Asian Journal of Chemistry 2020, 32, 2075 -2078.
AMA StyleTran Quoc Toan, Pham Quoc Long, Pham Minh Quan, Tran Thi Kim Gan, Luu Van Huyen, Pham Thi Hai Ha. Chemical Composition in Essential Oils of Schefflera octophylla L. Harvested in Hai Duong Province, Vietnam. Asian Journal of Chemistry. 2020; 32 (8):2075-2078.
Chicago/Turabian StyleTran Quoc Toan; Pham Quoc Long; Pham Minh Quan; Tran Thi Kim Gan; Luu Van Huyen; Pham Thi Hai Ha. 2020. "Chemical Composition in Essential Oils of Schefflera octophylla L. Harvested in Hai Duong Province, Vietnam." Asian Journal of Chemistry 32, no. 8: 2075-2078.
In this study, the essential oil profile of Callicarpa candicans (Burm. f.) Hochr was presented. Samples were collected from Vietnam and the oils were extracted from fresh leaves and dry leaves by hydrodistillation method. GC-MS data and retention indices were used to identify the chemical composition. The essential oil performance achieved 0.263% for fresh leaves and 1.503% for dry leaves. A total of 47 components were identified from fresh leaves oil and 39 constituents from dry leaves oil. Chemical compositions of the two essential oils were similar, with the major components being α-gurjunene, δ-cadinene, ε-caryophyllene (β-caryophyllene) and α-selinene.
Vu Thi Thu Le Vu Thi Thu Le; Lai Phuong Phuong Thao; Pham Thi Hong Minh; Hoang Thi Bich; Do Tien Lam; Dinh Thi Thu Thuy; Pham Minh Quan; Pham Quoc Long; Dao Viet Hung; Tran Quoc Toan; Thanh Sang Vo; Hai Ha Pham Thi. Essential Oil Profile of Vietnamese Callicarpa candicans (Burm. f.) Hochr. Asian Journal of Chemistry 2020, 32, 1630 -1634.
AMA StyleVu Thi Thu Le Vu Thi Thu Le, Lai Phuong Phuong Thao, Pham Thi Hong Minh, Hoang Thi Bich, Do Tien Lam, Dinh Thi Thu Thuy, Pham Minh Quan, Pham Quoc Long, Dao Viet Hung, Tran Quoc Toan, Thanh Sang Vo, Hai Ha Pham Thi. Essential Oil Profile of Vietnamese Callicarpa candicans (Burm. f.) Hochr. Asian Journal of Chemistry. 2020; 32 (7):1630-1634.
Chicago/Turabian StyleVu Thi Thu Le Vu Thi Thu Le; Lai Phuong Phuong Thao; Pham Thi Hong Minh; Hoang Thi Bich; Do Tien Lam; Dinh Thi Thu Thuy; Pham Minh Quan; Pham Quoc Long; Dao Viet Hung; Tran Quoc Toan; Thanh Sang Vo; Hai Ha Pham Thi. 2020. "Essential Oil Profile of Vietnamese Callicarpa candicans (Burm. f.) Hochr." Asian Journal of Chemistry 32, no. 7: 1630-1634.
Essential oils from Syzygium aromaticum (Myrtaceae) were extracted through hydrodistillation method, which applied in different fields such as relieve pain, promote healing, and aromatherapy industry. In this study, essential oil of clove buds was obtained using hydrodistillation method and evaluated for chemical compositions and physico-chemical characteristics. The averaged physico-chemical parameters were determined as specific gravity (1.0203 g/cm3), acid index (21.984), ester index (34.92). Moreover, the hydrodistillation process performance achieved by 6.85%. The composition of essential oils was analyzed by GC-MS, revealing a total of 15 volatile constituents existing in the Syzygium aromaticum oil. The major components were eugenol (76.542%), caryophyllene (4.319%), α-caryophyllene (0.456%), acete-ugenol (18.11%), caryophyllene oxide (0.192%), 4,4-dimethyl tetracyclo[6.3.2.0.(1,8)]tridecan-9-ol (0.12%). Syzygium aromaticum essential oil in this study was found to inhibit five bacteria strains including Bacillus cereus, Staphylococcus aureus, Escherichia coli, Salmonella typhimurium and Pseudomonas aeruginosa. The highest antimicrobial activity of clove essential oil was found for Bacillus cereus strain (14 mm).
Tran Quoc Toan; Cam Thi Inh; Hoang Thi Bich; Pham Quoc Long; Tran Thi Kim Ngan; Pham Thi Hai Ha. Chemical Composition Analysis and Evaluation of Antibacterial Activities of Essential Oil from Clove (Syzygium aromaticum) Buds. Asian Journal of Chemistry 2020, 32, 1649 -1652.
AMA StyleTran Quoc Toan, Cam Thi Inh, Hoang Thi Bich, Pham Quoc Long, Tran Thi Kim Ngan, Pham Thi Hai Ha. Chemical Composition Analysis and Evaluation of Antibacterial Activities of Essential Oil from Clove (Syzygium aromaticum) Buds. Asian Journal of Chemistry. 2020; 32 (7):1649-1652.
Chicago/Turabian StyleTran Quoc Toan; Cam Thi Inh; Hoang Thi Bich; Pham Quoc Long; Tran Thi Kim Ngan; Pham Thi Hai Ha. 2020. "Chemical Composition Analysis and Evaluation of Antibacterial Activities of Essential Oil from Clove (Syzygium aromaticum) Buds." Asian Journal of Chemistry 32, no. 7: 1649-1652.
This research aimed to investigate the chemical composition of seed oils extracted from three Vietnamese Dalbergia species (D. tonkinensis, D. mammosa, and D. entadoides). The fatty acid profiles and contents of tocopherols and sterols of the seed oils, and total phenolic compounds extracted from the fresh seeds were characterized using different methods. Among the examined samples, D. tonkinensis seed oils showed high contents of linoleic acid (64.7%), whereas in D. mammosa, oleic acid (51.2%) was predominant. In addition, α- and γ-tocopherol and β-sitosterol were major ingredients in the seed oils, whereas ferulic acid and rosmarinic acid are usually predominant in the seeds of these species. Regarding sterol composition, the D. entadoides seed oil figured for remarkably high content of Δ5,23-stigmastadienol (1735 mg/kg) and Δ7-stigmastenol (1298 mg/kg). In addition, extracts with methanol/water (80:20, v/v) of seeds displayed significant in vitro antioxidant activity which was determined by DPPH free radical scavenging assay.
Thi Thuy Nguyen; Lan Phuong Doan; Thu Huong Trinh Thi; Hong Ha Tran; Quoc Long Pham; Hai Ha Pham Thi; Long Giang Bach; Bertrand Matthäus; Quoc Toan Tran. Fatty Acids, Tocopherols, and Phytosterol Composition of Seed Oil and Phenolic Compounds and Antioxidant Activity of Fresh Seeds from Three Dalbergia Species Grown in Vietnam. Processes 2020, 8, 542 .
AMA StyleThi Thuy Nguyen, Lan Phuong Doan, Thu Huong Trinh Thi, Hong Ha Tran, Quoc Long Pham, Hai Ha Pham Thi, Long Giang Bach, Bertrand Matthäus, Quoc Toan Tran. Fatty Acids, Tocopherols, and Phytosterol Composition of Seed Oil and Phenolic Compounds and Antioxidant Activity of Fresh Seeds from Three Dalbergia Species Grown in Vietnam. Processes. 2020; 8 (5):542.
Chicago/Turabian StyleThi Thuy Nguyen; Lan Phuong Doan; Thu Huong Trinh Thi; Hong Ha Tran; Quoc Long Pham; Hai Ha Pham Thi; Long Giang Bach; Bertrand Matthäus; Quoc Toan Tran. 2020. "Fatty Acids, Tocopherols, and Phytosterol Composition of Seed Oil and Phenolic Compounds and Antioxidant Activity of Fresh Seeds from Three Dalbergia Species Grown in Vietnam." Processes 8, no. 5: 542.
Callicarpa candicans (Burm. f.) Hochr. (Callicarpa cana L.) is a medicinal plant that is distributed mainly in the tropics and subtropics of Asia and finds a wide range of uses in traditional medicine. In this study, we attempted and optimized the microwave-assisted hydro-distillation (MAHD) process to obtain essential oil from the leaves of C. candicans. In addition, the obtained oil was analyzed for volatile composition by gas chromatography–mass spectrometry (GC-MS) and assayed for bioactivity against several bacteria and cancer cell lines. To optimize the extraction process, response surface methodology (RSM) in combination with central composite design (CCD) was adopted. Experimental design and optimization were carried out with respect to three experimental factors including the ratio of water to raw material, extraction time, and microwave power. The optimal extraction conditions were obtained as follows: water to raw material ratio of 6/1 (v/w), extraction time 42 min, and microwave power 440 W. Composition determination of the obtained C. candicans essential oil indicated the presence of predominant components including caryophyllene (10.45%), cadinene (10.28%), gurjunene (8.95%), muurolene (8.92%), selinene (7.06%), selinene (5.59%), and copaene (5.40%). In comparison with the essential oils obtained via traditional hydro-distillation method, the essential oil extracted by MAHD exhibited superior anti-proliferative activity on all tested cancer cell lines. Current results imply that the MAHD is capable of recovering biologically-active natural products of greater quantity than that recovered by the conventional distillation.
Quoc Toan Tran; Thu Le Vu Thi; Tien Lam Do; Hong Minh Pham Thi; Bich Hoang Thi; Quang Truyen Chu; Phuong Thao Lai Phuong; Huu Nghi Do; Hoai Thu Hoang Than; Van Huyen Luu; Phuong Thi Mai Duong; Huong Thi Thu Phung; Thu Thuy Ta Thi; Vu Thi; Do; Pham Thi; Hoang Thi; Ta Thi. Optimization of Microwave-Assisted Extraction Process of Callicarpa candicans (Burm. f.) Hochr Essential Oil and Its Inhibitory Properties against Some Bacteria and Cancer Cell Lines. Processes 2020, 8, 173 .
AMA StyleQuoc Toan Tran, Thu Le Vu Thi, Tien Lam Do, Hong Minh Pham Thi, Bich Hoang Thi, Quang Truyen Chu, Phuong Thao Lai Phuong, Huu Nghi Do, Hoai Thu Hoang Than, Van Huyen Luu, Phuong Thi Mai Duong, Huong Thi Thu Phung, Thu Thuy Ta Thi, Vu Thi, Do, Pham Thi, Hoang Thi, Ta Thi. Optimization of Microwave-Assisted Extraction Process of Callicarpa candicans (Burm. f.) Hochr Essential Oil and Its Inhibitory Properties against Some Bacteria and Cancer Cell Lines. Processes. 2020; 8 (2):173.
Chicago/Turabian StyleQuoc Toan Tran; Thu Le Vu Thi; Tien Lam Do; Hong Minh Pham Thi; Bich Hoang Thi; Quang Truyen Chu; Phuong Thao Lai Phuong; Huu Nghi Do; Hoai Thu Hoang Than; Van Huyen Luu; Phuong Thi Mai Duong; Huong Thi Thu Phung; Thu Thuy Ta Thi; Vu Thi; Do; Pham Thi; Hoang Thi; Ta Thi. 2020. "Optimization of Microwave-Assisted Extraction Process of Callicarpa candicans (Burm. f.) Hochr Essential Oil and Its Inhibitory Properties against Some Bacteria and Cancer Cell Lines." Processes 8, no. 2: 173.
The purpose of this study was to attempt the encapsulation of lemongrass (Cymbopogon citratus) essential oil utilizing spray drying technique. An array of process parameters including concentration of wall (15–30%), type of wall materials (maltodextrin, maltodextrin and gum Arabic mixture), and concentration of essential oil (0.5–2.0%) were thoroughly investigated. The results show that the use of sole maltodextrin as encapsulant gave microcapsules characteristics comparable to that of powder produced using maltodextrin and gum Arabic mixture. The encapsulation process that was performed with maltodextrin at the concentration of 30% as wall material and lemongrass essential oil at the concentration of 1.5% as core material showed highest drying yield (84.49%), microencapsulation yield (89.31%) and microencapsulation efficiency (84.75%). Encapsulated essential oils retained most of their major constituents in comparison with the bare essential oils without any significant compromise in product quality.
Nguyen Phu Thuong Nhan; Vo Tan Thanh; Mai Huynh Cang; Tri Duc Lam; Nguyen Cam Huong; Le Thi Hong Nhan; Tran Thanh Truc; Thanh Truc Tran; Long Giang Bach. Microencapsulation of Lemongrass (Cymbopogon citratus) Essential Oil Via Spray Drying: Effects of Feed Emulsion Parameters. Processes 2020, 8, 40 .
AMA StyleNguyen Phu Thuong Nhan, Vo Tan Thanh, Mai Huynh Cang, Tri Duc Lam, Nguyen Cam Huong, Le Thi Hong Nhan, Tran Thanh Truc, Thanh Truc Tran, Long Giang Bach. Microencapsulation of Lemongrass (Cymbopogon citratus) Essential Oil Via Spray Drying: Effects of Feed Emulsion Parameters. Processes. 2020; 8 (1):40.
Chicago/Turabian StyleNguyen Phu Thuong Nhan; Vo Tan Thanh; Mai Huynh Cang; Tri Duc Lam; Nguyen Cam Huong; Le Thi Hong Nhan; Tran Thanh Truc; Thanh Truc Tran; Long Giang Bach. 2020. "Microencapsulation of Lemongrass (Cymbopogon citratus) Essential Oil Via Spray Drying: Effects of Feed Emulsion Parameters." Processes 8, no. 1: 40.
This study presents a chemometric study on agarwood (Aquilaria crassna) essential oils extracted from selected agarwood samples grown in various regions of Asia. Adopting gas chromatography-mass spectrometry (GC-MS) technique, it was revealed that essential oils, produced by hydrodistillation,constitutes mainly volatile aromatic compounds. Several major components are shared in all samples including dihydro-agarofuran-15-al, jinkoeremol, 10-epi-γ-eudesmol, agarospirol, valerianol, n-hexadecanoic acid, neopetasane and dihydrokaranone. Despite differences in composition, extraction yield and detected constituents found in analyzed samples, characteristic aromatic compounds were abundantly found in the Agarwood essential oil. These discrepancies could be due to cultivation season, climatic conditions and extraction methods. Unambiguous identification of components in agarwood essential oils thereby opens new potential in the application of high-value aromatic compounds in agarwood essential oil in cosmetic products, perfumes, and pharmaceuticals.
Tran Thi Kim Ngan; Dinh Thi Thu Thuy; Tran Thi Tuyen; Cam Thi Inh; Hoang Thi Bich; Pham Quoc Long; Nguyen Quyet Chien; Huynh Thi Kieu Linh; Le Nguyen Yen Trung; Nguyen Quang Tung; Duy Chinh Nguyen; Long Giang Bach; Tran Quoc Toan. Chemical Components of Agarwood (Aquilaria crassna) Essential Oils Grown in Various Regions of Asia. Asian Journal of Chemistry 2019, 32, 36 -40.
AMA StyleTran Thi Kim Ngan, Dinh Thi Thu Thuy, Tran Thi Tuyen, Cam Thi Inh, Hoang Thi Bich, Pham Quoc Long, Nguyen Quyet Chien, Huynh Thi Kieu Linh, Le Nguyen Yen Trung, Nguyen Quang Tung, Duy Chinh Nguyen, Long Giang Bach, Tran Quoc Toan. Chemical Components of Agarwood (Aquilaria crassna) Essential Oils Grown in Various Regions of Asia. Asian Journal of Chemistry. 2019; 32 (1):36-40.
Chicago/Turabian StyleTran Thi Kim Ngan; Dinh Thi Thu Thuy; Tran Thi Tuyen; Cam Thi Inh; Hoang Thi Bich; Pham Quoc Long; Nguyen Quyet Chien; Huynh Thi Kieu Linh; Le Nguyen Yen Trung; Nguyen Quang Tung; Duy Chinh Nguyen; Long Giang Bach; Tran Quoc Toan. 2019. "Chemical Components of Agarwood (Aquilaria crassna) Essential Oils Grown in Various Regions of Asia." Asian Journal of Chemistry 32, no. 1: 36-40.
Soybeans offer an abundant source of isoflavones, which confer useful bioactivities when existing in aglycone forms. The conversion of isoflavones into aglycones via fermentation of soybean products is often realized by β-glucosidase, an enzyme produced by fungi. In this study, a filamentous fungus, Clerodendron cyrtophyllum, was isolated from root of Clerodendron cyrtophyllum Turcz, which was able to produce the highest activity of β-glucosidase up to 33.72 U/mL at 144 h during fermentation on Potato Dextrose Broth (PDB). The obtained fungus was grown on isoflavones-rich soybean extract to produce genistein and daidzein, achieving the conversion rate of 98.7%. Genistein and daidzein were isolated and purified by column chromatography using hexane/acetone (29:1/1:1), reaching purities of over 90% of total isoflavones, as identified and determined by TLC, LC-MS/MS, and 1H and 13C NMR spectroscopy. These results imply that the isolated P. citrinum is a potential fungal strain for industrial-scale production of genistein and daidzein from isoflavones-containing soybean extracts. These products may serve as potential raw materials for manufacture of functional foods that are based on aglycones.
Duy Tien Doan; Duc Phuong Luu; Thanh Duong Nguyen; Bich Hoang Thi; Hong Minh Pham Thi; Huu Nghi Do; Van Huyen Luu; The Dan Pham; Van Thai Than; Hai Ha Pham Thi; Minh Quan Pham; Quoc Toan Tran. Isolation of Penicillium citrinum from Roots of Clerodendron cyrtophyllum and Application in Biosynthesis of Aglycone Isoflavones from Soybean Waste Fermentation. Foods 2019, 8, 554 .
AMA StyleDuy Tien Doan, Duc Phuong Luu, Thanh Duong Nguyen, Bich Hoang Thi, Hong Minh Pham Thi, Huu Nghi Do, Van Huyen Luu, The Dan Pham, Van Thai Than, Hai Ha Pham Thi, Minh Quan Pham, Quoc Toan Tran. Isolation of Penicillium citrinum from Roots of Clerodendron cyrtophyllum and Application in Biosynthesis of Aglycone Isoflavones from Soybean Waste Fermentation. Foods. 2019; 8 (11):554.
Chicago/Turabian StyleDuy Tien Doan; Duc Phuong Luu; Thanh Duong Nguyen; Bich Hoang Thi; Hong Minh Pham Thi; Huu Nghi Do; Van Huyen Luu; The Dan Pham; Van Thai Than; Hai Ha Pham Thi; Minh Quan Pham; Quoc Toan Tran. 2019. "Isolation of Penicillium citrinum from Roots of Clerodendron cyrtophyllum and Application in Biosynthesis of Aglycone Isoflavones from Soybean Waste Fermentation." Foods 8, no. 11: 554.