This page has only limited features, please log in for full access.
Arthrospira platensis is one of the most important cultured microalgal species in the world. Arthrospira complete dry biomass (ACDB) has been reported as an interesting feedstock for many industries, including biodiesel production. The A. platensis by-product of biodiesel production (lipid-free biomass; LFB) is a source of proteins, functional molecules, and carbohydrates, and can also be reused in several applications. The current study investigated the efficiency of ACDB and LFB in bioremediation of dye (Ismate violet 2R, IV2R) from textile effluents. In addition, the potential of ACDB and LFB loaded by IV2R as a feed for Rotifer, Brachionus plicatilis, was examined. The surface of the adsorbents was characterized by SEM, FTIR, and Raman analysis to understand the adsorption mechanism. The batch sorption method was examined as a function of adsorbent dose (0.02–0.01 g L−1), solution initial concentration (10–100 mg L−1), pH (2–10), and contact time (15–180 min). The kinetic studies and adsorption isotherm models (Freundlich, Langmuir, Tempkin, and Halsey) were used to describe the interaction between dye and adsorbents. The results concluded that the adsorption process increased with increasing ACDB and LFB dose, contact time (120 min), initial IV2R concentration (10 mg L−1), and acidity pH (2 and 6, respectively). For the elimination of industrial textile wastewater, the ACDB and LFB sorbents have good elimination ability of a dye solution by 75.7% and 61.11%, respectively. The kinetic interaction between dye and adsorbents fitted well to Langmuir, Freundlish, and Halsey models for LFB, and Langmuir for ACDB at optimum conditions with R2 > 0.9. In addition, based on the bioassay study, the ACDB and LFB loaded by IV2R up to 0.02 g L−1 may be used as feed for the marine Rotifer B. plicatilis.
Ahmed Alprol; Ahmed Heneash; Mohamed Ashour; Khamael Abualnaja; Dalal Alhashmialameer; Abdallah Mansour; Zaki Sharawy; Mouhamed Abu-Saied; Abd Abomohra. Potential Applications of Arthrospira platensis Lipid-Free Biomass in Bioremediation of Organic Dye from Industrial Textile Effluents and Its Influence on Marine Rotifer (Brachionus plicatilis). Materials 2021, 14, 4446 .
AMA StyleAhmed Alprol, Ahmed Heneash, Mohamed Ashour, Khamael Abualnaja, Dalal Alhashmialameer, Abdallah Mansour, Zaki Sharawy, Mouhamed Abu-Saied, Abd Abomohra. Potential Applications of Arthrospira platensis Lipid-Free Biomass in Bioremediation of Organic Dye from Industrial Textile Effluents and Its Influence on Marine Rotifer (Brachionus plicatilis). Materials. 2021; 14 (16):4446.
Chicago/Turabian StyleAhmed Alprol; Ahmed Heneash; Mohamed Ashour; Khamael Abualnaja; Dalal Alhashmialameer; Abdallah Mansour; Zaki Sharawy; Mouhamed Abu-Saied; Abd Abomohra. 2021. "Potential Applications of Arthrospira platensis Lipid-Free Biomass in Bioremediation of Organic Dye from Industrial Textile Effluents and Its Influence on Marine Rotifer (Brachionus plicatilis)." Materials 14, no. 16: 4446.
The formulator of aquatic diets is part of a continuous search for alternative protein sources instead of depreciated fish meal. The utilization of zooplankton as a feed ingredient is an interesting trend due to their high-quality protein content and abundance of essential nutrients. The current study aims to investigate the effects of partial and total replacement of fish meal (FM) by Dahpnia magna meal (DMM) on growth performance, feed utilization, histological, and economic status of mullet, M. cephalus, larvae. In addition to the control diet, 100% FM, D0, four diets containing DMM at different levels were used: 25% (D25), 50% (D50), 75% (D75), and 100% (D100) replacement of fish meal. A total of 300 larvae (0.097 ± 0.001 g) were equally divided into five groups (three replicate per each group) at a density of 200 larvae m−3. The aquariums were renewed at a rate of 30% daily. During the 60-day experimental period, all larvae were fed their respective diets at a level of 20% of live body weight, five times a day (9.00 a.m., 12.00, 15.00, 18.00, and 21.00 p.m.). The results indicated that compared to D0, fish fed D75 recorded the highest significant value of growth, and feed utilization parameters, while fish fed D100 achieved the lowest feed cost and incidence cost, and the highest profit index and economic efficiency ratio. A strong correlation was reported among weight gain, feed conversion ratio and fish meal replacement with DMM; R2 = 0.94 and 0.91, respectively. The fit regression model representing mullet response to FM replacement with DMM is a poly-nominal regression model with maximum response at 75–100%. The histological investigation of the intestine revealed an improvement of histomorphometric indices and goblet cell number with increasing DMM inclusion levels. These findings confirmed that 75% to 100% partial substitution of FM with DMM is the ideal replacement for mullet, M. cephalus, larvae for improving fish growth performance and feed utilization.
Hamdy Abo-Taleb; Mohamed Ashour; Mohamed Elokaby; Mohamed Mabrouk; Mohamed El-Feky; Othman Abdelzaher; Ahmed Gaber; Walaa Alsanie; Abdallah Mansour. Effect of a New Feed Daphnia magna (Straus, 1820), as a Fish Meal Substitute on Growth, Feed Utilization, Histological Status, and Economic Revenue of Grey Mullet, Mugil cephalus (Linnaeus 1758). Sustainability 2021, 13, 7093 .
AMA StyleHamdy Abo-Taleb, Mohamed Ashour, Mohamed Elokaby, Mohamed Mabrouk, Mohamed El-Feky, Othman Abdelzaher, Ahmed Gaber, Walaa Alsanie, Abdallah Mansour. Effect of a New Feed Daphnia magna (Straus, 1820), as a Fish Meal Substitute on Growth, Feed Utilization, Histological Status, and Economic Revenue of Grey Mullet, Mugil cephalus (Linnaeus 1758). Sustainability. 2021; 13 (13):7093.
Chicago/Turabian StyleHamdy Abo-Taleb; Mohamed Ashour; Mohamed Elokaby; Mohamed Mabrouk; Mohamed El-Feky; Othman Abdelzaher; Ahmed Gaber; Walaa Alsanie; Abdallah Mansour. 2021. "Effect of a New Feed Daphnia magna (Straus, 1820), as a Fish Meal Substitute on Growth, Feed Utilization, Histological Status, and Economic Revenue of Grey Mullet, Mugil cephalus (Linnaeus 1758)." Sustainability 13, no. 13: 7093.
This paper presents an estimation of the adsorptive potential of multiwalled carbon nanotubes (MWCNTs) and modified poly (acrylonitrile-co-styrene) with activated carbon for the uptake of reactive red 35 (RR35) dye from aqueous solution by a batch system. MWCNT adsorbent was synthesized by encapsulation via in situ polymerization. The copolymer material of poly (acrylonitrile-styrene) P (AN-co-ST) was prepared in a ratio of 2:1 V/V by the precipitation polymerization process. The prepared composites’ properties were characterized by FTIR, SEM, Raman, mean particle size (PSA), and XRD analysis. The PSA of the copolymeric material was determined to be 450.5 and 994 nm for MWCNTs and P(AN-co-St)/AC, respectively. Moreover, the influences of different factors, for example pH (2–10), adsorbents dosage (0.005–0.04 g), contact time (5–120 min), initial dye concentration (10–50 mg L−1), and temperature (25–55 °C). The optimum values were determined to be 2 and 4 pH, 10 mg L−1 of RR35 dye, and 0.04 g of adsorbents at early contact time. Furthermore, the adsorption isotherm was studied using Langmuir, Freundlich, Tempkin, and Halsey models. Maximum capacity qmax for MWCNTS and P (AN-co-St)/AC was 256.41 and 30.30 mg g−1, respectively. The investigational kinetic study was appropriated well via a pseudo second-order model with a correlation coefficient around 0.99. Thermodynamic study displayed that the removal of RR35 is exothermic, a spontaneous and physisorption system. The adsorption efficiency reduced to around 54–55% of the RR35 after four cycles of reuse of the adsorbents at 120 min.
Khamael Abualnaja; Ahmed Alprol; M. Abu-Saied; Mohamed Ashour; Abdallah Mansour. Removing of Anionic Dye from Aqueous Solutions by Adsorption Using of Multiwalled Carbon Nanotubes and Poly (Acrylonitrile-styrene) Impregnated with Activated Carbon. Sustainability 2021, 13, 7077 .
AMA StyleKhamael Abualnaja, Ahmed Alprol, M. Abu-Saied, Mohamed Ashour, Abdallah Mansour. Removing of Anionic Dye from Aqueous Solutions by Adsorption Using of Multiwalled Carbon Nanotubes and Poly (Acrylonitrile-styrene) Impregnated with Activated Carbon. Sustainability. 2021; 13 (13):7077.
Chicago/Turabian StyleKhamael Abualnaja; Ahmed Alprol; M. Abu-Saied; Mohamed Ashour; Abdallah Mansour. 2021. "Removing of Anionic Dye from Aqueous Solutions by Adsorption Using of Multiwalled Carbon Nanotubes and Poly (Acrylonitrile-styrene) Impregnated with Activated Carbon." Sustainability 13, no. 13: 7077.
Burullus Lake is Egypt’s second most important coastal lagoon. The present study aimed to shed light on the different types of polluted waters entering the lake from various drains, as well as to evaluate the zooplankton community, determine the physical and chemical characteristics of the waters, and study the eutrophication state based on three years of seasonal monitoring from 2017 to 2019 at 12 stations. The results revealed that Rotifera, Copepoda, Protozoa, and Cladocera dominated the zooplankton population across the three-year study period, with a total of 98 taxa from 59 genera and 10 groups detected in the whole-body lake in 2018 and 2019, compared to 93 species from 52 genera in 2017. Twelve representative surface water samples were collected from the lake to determine physicochemical parameters, i.e., temperature, pH, salinity, dissolved oxygen, biological oxygen demand, chemical oxygen demand, ammonia-N, nitrate–N, nitrate-N, total nitrogen, total phosphorus, dissolved reactive phosphorus, and chlorophyll-a, as well as Fe, Cu, Zn, Cr, Ni, Cd, and Pb ions. Based on the calculations of the water quality index (WQI), the lake was classified as having good water quality. However, the trophic state is ranked as hyper-eutrophic and high trophic conditions.
Ahmed Alprol; Ahmed Heneash; Asgad Soliman; Mohamed Ashour; Walaa Alsanie; Ahmed Gaber; Abdallah Mansour. Assessment of Water Quality, Eutrophication, and Zooplankton Community in Lake Burullus, Egypt. Diversity 2021, 13, 268 .
AMA StyleAhmed Alprol, Ahmed Heneash, Asgad Soliman, Mohamed Ashour, Walaa Alsanie, Ahmed Gaber, Abdallah Mansour. Assessment of Water Quality, Eutrophication, and Zooplankton Community in Lake Burullus, Egypt. Diversity. 2021; 13 (6):268.
Chicago/Turabian StyleAhmed Alprol; Ahmed Heneash; Asgad Soliman; Mohamed Ashour; Walaa Alsanie; Ahmed Gaber; Abdallah Mansour. 2021. "Assessment of Water Quality, Eutrophication, and Zooplankton Community in Lake Burullus, Egypt." Diversity 13, no. 6: 268.
In this study, a multi-walled carbon nanotube (MWCNT) was synthesized and used as an adsorbent for the removal of Ismate violet 2R dye from contaminated water. The morphology and structure of the synthesized adsorbent were examined via the Brunauer–Emmett–Teller (BET) surface area, X-ray powder diffraction (XRD) analysis, infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and Raman spectroscopy. The effects of an MWCNT on the removal of IV2R were examined via a batch method using different factors such as pH, agitation time, adsorbent dosage, temperature, and initial dye concentration. The results showed that, at the acidic pH 4, 0.08 g of an MWCNT with 10 mg L−1 at 120 min realized the favorable removal of IV2R dye using an MWCNT. Under these operation conditions, the maximum elimination efficiency for real wastewater reached 88.2%. This process benefits from the ability to remove a large amount of dye (approximately 85.9%) in as short as 10 min using 0.005 g of MWCNTs. Moreover, the investigational isotherm data were examined by different models. The equations of error functions were used in the isotherm model to show the most appropriate isotherm model. The highest adsorption capacity for the removal of the dye was 76.92 mg g−1 for the MWCNT. Moreover, the regression data indicated that the adsorption kinetics were appropriate with a pseudo-second order and an R2 of 0.999. The thermodynamic study showed that the removal of IV2R is an endothermic, spontaneous, and chemisorption process. The MWCNT compound appears to be a new, promising adsorbent in water treatment, with 91.71% regeneration after three cycles.
Khamael Abualnaja; Ahmed Alprol; Mohamed Ashour; Abdallah Mansour. Influencing Multi-Walled Carbon Nanotubes for the Removal of Ismate Violet 2R Dye from Wastewater: Isotherm, Kinetics, and Thermodynamic Studies. Applied Sciences 2021, 11, 4786 .
AMA StyleKhamael Abualnaja, Ahmed Alprol, Mohamed Ashour, Abdallah Mansour. Influencing Multi-Walled Carbon Nanotubes for the Removal of Ismate Violet 2R Dye from Wastewater: Isotherm, Kinetics, and Thermodynamic Studies. Applied Sciences. 2021; 11 (11):4786.
Chicago/Turabian StyleKhamael Abualnaja; Ahmed Alprol; Mohamed Ashour; Abdallah Mansour. 2021. "Influencing Multi-Walled Carbon Nanotubes for the Removal of Ismate Violet 2R Dye from Wastewater: Isotherm, Kinetics, and Thermodynamic Studies." Applied Sciences 11, no. 11: 4786.
Bioactive molecules derived from seaweed extracts are revolutionary bio-stimulants used to enhance plant growth and increase yield production. This study evaluated the effectiveness of a commercially available seaweed liquid extract, namely, True-Algae-Max (TAM®), as a plant growth stimulant on nutritional, and antioxidant activity of Capsicum annuum. Three concentrations of TAM® (0.25, 0.5, and 1%) of various NPK: TAM® ratios were investigated via foliar spray, over 2017 and 2018 cultivation seasons, under greenhouse conditions. TAM® is rich in phytochemical compounds, such as ascorbic acid (1.66 mg g−1), phenolics (101.67 mg g−1), and flavonoids (2.60 mg g−1) that showed good antioxidant activity (54.52 mg g−1) and DPPH inhibition of 70.33%. Promoting measured parameter results stated the extensive potentiality of TAM® application, in comparison with conventional NPK treatment. Yield and composition of C. annuum were significantly improved in all TAM® treated groups, especially the TAM0.5% concentration, which resulted in maximum yield (4.23 Kg m−2) and significant amounts of profuse biological molecules like chlorophyll, ascorbic, phenolic compounds, flavonoids, and total nutrients. Compared to the NPK control treatments, C. annuum treated with TAM0.5% improved the total antioxidant activity of hot Pepper from 162.16 to 190.95 mg g−1. These findings indicate that the extract of seaweed can be used as an environmentally friendly, multi-functional biostimulant in the agricultural field for more sustainable production, in addition to reducing the use of hazardous synthetic fertilizers.
Mohamed Ashour; Shimaa Hassan; Mostafa Elshobary; Gamal Ammar; Ahmed Gaber; Walaa Alsanie; Abdallah Mansour; Rania El-Shenody. Impact of Commercial Seaweed Liquid Extract (TAM®) Biostimulant and Its Bioactive Molecules on Growth and Antioxidant Activities of Hot Pepper (Capsicum annuum). Plants 2021, 10, 1045 .
AMA StyleMohamed Ashour, Shimaa Hassan, Mostafa Elshobary, Gamal Ammar, Ahmed Gaber, Walaa Alsanie, Abdallah Mansour, Rania El-Shenody. Impact of Commercial Seaweed Liquid Extract (TAM®) Biostimulant and Its Bioactive Molecules on Growth and Antioxidant Activities of Hot Pepper (Capsicum annuum). Plants. 2021; 10 (6):1045.
Chicago/Turabian StyleMohamed Ashour; Shimaa Hassan; Mostafa Elshobary; Gamal Ammar; Ahmed Gaber; Walaa Alsanie; Abdallah Mansour; Rania El-Shenody. 2021. "Impact of Commercial Seaweed Liquid Extract (TAM®) Biostimulant and Its Bioactive Molecules on Growth and Antioxidant Activities of Hot Pepper (Capsicum annuum)." Plants 10, no. 6: 1045.
Copepods are one of the most abundant and diverse live food sources for mesopelagic and bathypelagic fishes and crustaceans. They could contribute to the overlap of the transition period from live feed to an artificial weaning diet in marine larvae production. However, the culture conditions still need optimization to provide sufficient production to cover the increasing demand for marine hatcheries. Therefore, the present study investigated the effects of different salinity levels (5, 10, 15, 20, 25, and 30 ppt) on the population growth, growth rate, and population composition (males, females, copepodite, and nauplii ratio) of the marine copepod, Oithona nana. The experiment continued for 15 days, under laboratory-controlled conditions of temperature (27 ± 1 °C), pH (7.7 ± 0.15), and continuous gentle aeration in 30 L glass aquaria. The copepod culture aquaria were supplemented with a mixture of soybean and yeast (0.5 g 10−6 individual−1 24-h−1) as a feed source. The highest significant population growth and population growth rate of O. nana were achieved with a salinity level of 20 ppt. Regarding population composition, O. nana cultured at the salinity level of 20 ppt recorded the highest significant percentages of copepodite and nauplii. The results concluded that copepod, O. nana, is capable of withstanding abrupt changes in the salinity, but there are limits to their tolerance, with an optimal salinity level of 20 ppt. This salinity level achieved the highest population growth and the highest percentages of copepodite and nauplii of marine Copepoda, O. nana.
Fawzy Magouz; Mohamed Essa; Mustafa Matter; Abdallah Mansour; Ahmed Gaber; Mohamed Ashour. Effect of Different Salinity Levels on Population Dynamics and Growth of the Cyclopoid Copepod Oithona nana. Diversity 2021, 13, 190 .
AMA StyleFawzy Magouz, Mohamed Essa, Mustafa Matter, Abdallah Mansour, Ahmed Gaber, Mohamed Ashour. Effect of Different Salinity Levels on Population Dynamics and Growth of the Cyclopoid Copepod Oithona nana. Diversity. 2021; 13 (5):190.
Chicago/Turabian StyleFawzy Magouz; Mohamed Essa; Mustafa Matter; Abdallah Mansour; Ahmed Gaber; Mohamed Ashour. 2021. "Effect of Different Salinity Levels on Population Dynamics and Growth of the Cyclopoid Copepod Oithona nana." Diversity 13, no. 5: 190.
In this study, a polymeric (acrylonitrile-co-styrene) P(AN-co-St) composite was impregnated with adsorbents, such as sulfonated and multiwall carbon nanotubes (MWCNTs), to increase the adsorptive characteristics of the nanocomposite upon the removal of methyl orange (MO) dye under different conditions. A novel nanocomposite copolymer mixture of P(AN-co-St) and SP(AN-co-St) was used. MWCNTs were prepared by a low-cost chemical vapor deposition (CVD) process. Variation in MO adsorption onto the three nanocomposites was examined in an aqueous solution via the batch technique with respect to contact time, initial MO concentration, adsorbent dosage, pH, and temperature. The surface of the nanocomposites was characterized by a scanning electron microscope (SEM), particle size distribution (PSD), Fourier transform infrared (FTIR), and Raman analysis. The experimental data showed that the efficiency of P(AN-co-St)/ MWCNT removal increased under the conditions of an acidic pH (3 and 5) with an agitation speed of 140 rpm, a sorbent weight of 0.01 g, and 20 mg of initial dye. The maximum sorption capacities were 121.95, 48.78, and 47.84 mg g−1 for the P(AN-co-St)/ MWCNTs, SP(AN-co-St), and P(AN-co-St) composites, respectively, as assessed by the Langmuir model. Additional isotherm models, such as the Freundlich, Temkin, and Halsey models, were used to examine the experimental data. A pseudo-second-order model was found to be more fitting for describing the sorption.
Khamael Abualnaja; Ahmed Alprol; M. Abu-Saied; Abdallah Mansour; Mohamed Ashour. Studying the Adsorptive Behavior of Poly(Acrylonitrile-co-Styrene) and Carbon Nanotubes (Nanocomposites) Impregnated with Adsorbent Materials towards Methyl Orange Dye. Nanomaterials 2021, 11, 1144 .
AMA StyleKhamael Abualnaja, Ahmed Alprol, M. Abu-Saied, Abdallah Mansour, Mohamed Ashour. Studying the Adsorptive Behavior of Poly(Acrylonitrile-co-Styrene) and Carbon Nanotubes (Nanocomposites) Impregnated with Adsorbent Materials towards Methyl Orange Dye. Nanomaterials. 2021; 11 (5):1144.
Chicago/Turabian StyleKhamael Abualnaja; Ahmed Alprol; M. Abu-Saied; Abdallah Mansour; Mohamed Ashour. 2021. "Studying the Adsorptive Behavior of Poly(Acrylonitrile-co-Styrene) and Carbon Nanotubes (Nanocomposites) Impregnated with Adsorbent Materials towards Methyl Orange Dye." Nanomaterials 11, no. 5: 1144.
The marine copepod species Oithona nana is considered as one of the most successfully mass cultured Cyclopoida species in marine hatcheries. This study investigated the effects of four feed diets (soybean, yeast, rice bran, and corn starch) on the population growth, growth rate, population composition, fecundity, and fatty acid composition of native isolated Cyclopoida copepod species O. nana. The experiment was continued for 15 days and the copepods were fed on one of the four diets with a concentration of 1 g 10−6 individual day−1. The results revealed that corn starch was found to be the most supportive diet for population growth and population growth rate. For nutritional value, copepods fed on rice bran were detected to have the highest content of MUFA, PUFA, and the lowest SFA and SFA/UFA ratio; more importantly, the rice bran diet was the only treatment that showed C20:5ω3. Moreover, copepods fed on rice bran showed the highest significant female fecundity, copepodite, and nauplii percent. Finally, the protocols described in the current study concluded that the dry feeds, especially corn starch, are very useful and applicable in hatcheries for maximizing the fecundity and density of Cyclopoida copepod species, O. nana.
Fawzy Magouz; Mohamed Essa; Mustafa Matter; Abdallah Tageldein Mansour; Mohamed Alkafafy; Mohamed Ashour. Population Dynamics, Fecundity and Fatty Acid Composition of Oithona nana (Cyclopoida, Copepoda), Fed on Different Diets. Animals 2021, 11, 1188 .
AMA StyleFawzy Magouz, Mohamed Essa, Mustafa Matter, Abdallah Tageldein Mansour, Mohamed Alkafafy, Mohamed Ashour. Population Dynamics, Fecundity and Fatty Acid Composition of Oithona nana (Cyclopoida, Copepoda), Fed on Different Diets. Animals. 2021; 11 (5):1188.
Chicago/Turabian StyleFawzy Magouz; Mohamed Essa; Mustafa Matter; Abdallah Tageldein Mansour; Mohamed Alkafafy; Mohamed Ashour. 2021. "Population Dynamics, Fecundity and Fatty Acid Composition of Oithona nana (Cyclopoida, Copepoda), Fed on Different Diets." Animals 11, no. 5: 1188.
This study aimed to understand the effect of commercial seaweed extract as a biofertilizer, named True-Algae-Max (TAM®), on the yield, nutritional, antioxidant, and cytotoxic activity of Eruca vesicaria. Three concentrations of TAM® (5, 10, and 15%) were studied by foliar spray over the two cultivation years (2016 and 2017) without any chemical fertilizer, along with a control consisting of synthetic nitrogen, phosphorus and potassium (NPK) fertilizers. The yield and composition of E. vesicaria were significantly improved in all treatments, particularly at 10% concentration of TAM®, which resulted in maximum yield (1.99 kg m−2) and significant amounts of chlorophyll, carotenoids, phenolic compounds, flavonoids and total nutrients. Compared to the NPK control, E. vesicaria grown with 10% of TAM® improved total antioxidant activity from 41.80 to 49.36 mg g−1 and cytotoxicity from 25.30 to 60.40% with an IC50 value 85.7 µg mL−1 against the hepatocellular carcinoma cell line (HepG2). These findings indicate that seaweed extract can generally be used as a safe potential multifunctional biofertilizer in the agricultural field. The use of seaweed as a biofertilizer could potentially help mitigate the adverse effects of main nutrient deficiencies, diminishing the use of chemical fertilizers.
Shimaa Hassan; Mohamed Ashour; Ahmed Soliman; Hesham Hassanien; Walaa Alsanie; Ahmed Gaber; Mostafa Elshobary. The Potential of a New Commercial Seaweed Extract in Stimulating Morpho-Agronomic and Bioactive Properties of Eruca vesicaria (L.) Cav. Sustainability 2021, 13, 4485 .
AMA StyleShimaa Hassan, Mohamed Ashour, Ahmed Soliman, Hesham Hassanien, Walaa Alsanie, Ahmed Gaber, Mostafa Elshobary. The Potential of a New Commercial Seaweed Extract in Stimulating Morpho-Agronomic and Bioactive Properties of Eruca vesicaria (L.) Cav. Sustainability. 2021; 13 (8):4485.
Chicago/Turabian StyleShimaa Hassan; Mohamed Ashour; Ahmed Soliman; Hesham Hassanien; Walaa Alsanie; Ahmed Gaber; Mostafa Elshobary. 2021. "The Potential of a New Commercial Seaweed Extract in Stimulating Morpho-Agronomic and Bioactive Properties of Eruca vesicaria (L.) Cav." Sustainability 13, no. 8: 4485.
Seaweed extract biostimulants are among the best modern sustainable biological plant growth promoters. They have been proven to eliminate plant diseases and abiotic stresses, leading to maximizing yields. Additionally, they have been listed as environmentally friendly biofertilizers. The focus of the present research is the use of a commercial seaweed biostimulant as an eco-friendly product (formally named True Algae Max (TAM). During the 2017 and 2018 seasons, five treatments of various NPK:TAM ratios were applied via regular fertigation, namely a conventional treatment of 100% NPK (C0) alongside combinations of 25%, 50%, 75%, and 100% (C25, C50, C75, and C100) of TAM, to evaluate the effectiveness of its bioactive compounds on enhancing growth, yield, and NPK content of cucumber (Cucumis sativus) under greenhouse conditions. TAM is rich in phytochemical compounds, such as milbemycin oxime, rhodopin, nonadecane, and 5-silaspiro [4.4]nona-1,3,6,8-tetraene,3,8-bis(diethylboryl)-2,7-diethyl-1,4,6,9-tetraphenyl-. Promising measured parameter outcomes showed the potentiality of applying TAM with and without mixes of ordinary NPK application. TAM could increase cucumber yield due to improving chemical and physical features related to immunity, productivity, and stress defense. In conclusion, it is better to avoid applying mineral fertilizers, considering also that the organic agricultural and welfare sectors could shortly depend on such biotechnological tools and use them to fulfill global food demands for improved sustainability.
Shimaa Hassan; Mohamed Ashour; Nobumitsu Sakai; Lixin Zhang; Hesham Hassanien; Ahmed Gaber; Gamal Ammar. Impact of Seaweed Liquid Extract Biostimulant on Growth, Yield, and Chemical Composition of Cucumber (Cucumis sativus). Agriculture 2021, 11, 320 .
AMA StyleShimaa Hassan, Mohamed Ashour, Nobumitsu Sakai, Lixin Zhang, Hesham Hassanien, Ahmed Gaber, Gamal Ammar. Impact of Seaweed Liquid Extract Biostimulant on Growth, Yield, and Chemical Composition of Cucumber (Cucumis sativus). Agriculture. 2021; 11 (4):320.
Chicago/Turabian StyleShimaa Hassan; Mohamed Ashour; Nobumitsu Sakai; Lixin Zhang; Hesham Hassanien; Ahmed Gaber; Gamal Ammar. 2021. "Impact of Seaweed Liquid Extract Biostimulant on Growth, Yield, and Chemical Composition of Cucumber (Cucumis sativus)." Agriculture 11, no. 4: 320.
To achieve strong, successful and commercial aqua-biotechnological microalgae applications, screening, isolation, molecular identification, and physiological characterizations are needed. In the current study, a native cyanobacteria strain Arthrospira platensis NIOF17/003 was isolated from the surface water of El-Khadra Lake, a saline-alkaline lake located in Wadi El-Natrun, Egypt. The cyanobacterium was phylogenetically identified by 16S rRNA molecular marker and deposited in the GenBank database (accession number MW396472). The late exponential phase of A. platensis NIOF17/003 was reached at the 8th day of growth using Zarrouk medium, with a recorded dry weight (DW) of 0.845 g L−1. The isolated strain showed 52% of protein, 14% of carbohydrate, biomass productivity of 143.83 mg L−1 day−1, 8.5% of lipid, and lipid productivity of 14.37 mg L−1 day−1. In general, the values of cetane number, iodine value, cold filter plugging point (52.9, 85.5 g I2/100 g oil, and −2.2 °C, respectively) of the isolated fatty acid methyl esters are in accordance with those suggested by international standards. Besides, applying algal-free lipid (FL) as biodiesel byproduct in the production of rotifer (Brachionus plicatilis) revealed that a 0.6 g L−1 FL significantly increased the rotifer population females carrying eggs, confirming that FL can be used efficiently for B. plicatilis production. The current study concluded that the new isolate A. platensis NIOF17/003 is a promising strain for double sustainable use in biodiesel production and aquaculture feed.
Mohamed Zaki; Mohamed Ashour; Ahmed Heneash; Mohamed Mabrouk; Ahmed Alprol; Hanan Khairy; Abdelaziz Nour; Abdallah Mansour; Hesham Hassanien; Ahmed Gaber; Mostafa Elshobary. Potential Applications of Native Cyanobacterium Isolate (Arthrospira platensis NIOF17/003) for Biodiesel Production and Utilization of Its Byproduct in Marine Rotifer (Brachionus plicatilis) Production. Sustainability 2021, 13, 1769 .
AMA StyleMohamed Zaki, Mohamed Ashour, Ahmed Heneash, Mohamed Mabrouk, Ahmed Alprol, Hanan Khairy, Abdelaziz Nour, Abdallah Mansour, Hesham Hassanien, Ahmed Gaber, Mostafa Elshobary. Potential Applications of Native Cyanobacterium Isolate (Arthrospira platensis NIOF17/003) for Biodiesel Production and Utilization of Its Byproduct in Marine Rotifer (Brachionus plicatilis) Production. Sustainability. 2021; 13 (4):1769.
Chicago/Turabian StyleMohamed Zaki; Mohamed Ashour; Ahmed Heneash; Mohamed Mabrouk; Ahmed Alprol; Hanan Khairy; Abdelaziz Nour; Abdallah Mansour; Hesham Hassanien; Ahmed Gaber; Mostafa Elshobary. 2021. "Potential Applications of Native Cyanobacterium Isolate (Arthrospira platensis NIOF17/003) for Biodiesel Production and Utilization of Its Byproduct in Marine Rotifer (Brachionus plicatilis) Production." Sustainability 13, no. 4: 1769.
Solenocera crassicornis is a commercially important shrimp of the Solenoceridae family. The current study investigated the morphology, molecular identification, phylogenetic relationships, and population dynamics of S. crassicornis in Egypt. Samples were collected monthly (total, 1722; male = 40.19%, wet weight, 0.89–10.77 g; female = 59.81%, wet weight, 1.55–19.24 g) from Al-Attaka commercial catch in the Gulf of Suez in the Red Sea. Two barcode markers, 18S rRNA and cytochrome c oxidase subunit I (COI), were used for molecular identification. COI partial sequences were used to construct the phylogenetic relationships among different species of genus Solenocera and to infer the origin of the studied Solenocera crassicornis. The applied molecular markers successfully identified the studied species to the species level. The genetic distances among S. crassicornis sequences from different countries revealed the Indo-West Pacific origin of S. crassicornis. The relationship between total length (TL) and total weight (TW) was TW = 0.035TL2.275 and r2 = 0.805 for males and TW = 0.007TL3.036 and r2 = 0.883 for females, indicating that females were heavier than males. Despite its social and economic relevance in the area, information on the hatching, larval rearing, and farming of S. crassicornis is scarce and requires future studies under Egyptian conditions.
Eman M. Abbas; Fawzia S. Ali; Mohammed G. Desouky; Mohamed Ashour; Ahmed El-Shafei; Mahmoud M. Maaty; Zaki Z. Sharawy. Novel Comprehensive Molecular and Ecological Study Introducing Coastal Mud Shrimp (Solenocera Crassicornis) Recorded at the Gulf of Suez, Egypt. Journal of Marine Science and Engineering 2020, 9, 9 .
AMA StyleEman M. Abbas, Fawzia S. Ali, Mohammed G. Desouky, Mohamed Ashour, Ahmed El-Shafei, Mahmoud M. Maaty, Zaki Z. Sharawy. Novel Comprehensive Molecular and Ecological Study Introducing Coastal Mud Shrimp (Solenocera Crassicornis) Recorded at the Gulf of Suez, Egypt. Journal of Marine Science and Engineering. 2020; 9 (1):9.
Chicago/Turabian StyleEman M. Abbas; Fawzia S. Ali; Mohammed G. Desouky; Mohamed Ashour; Ahmed El-Shafei; Mahmoud M. Maaty; Zaki Z. Sharawy. 2020. "Novel Comprehensive Molecular and Ecological Study Introducing Coastal Mud Shrimp (Solenocera Crassicornis) Recorded at the Gulf of Suez, Egypt." Journal of Marine Science and Engineering 9, no. 1: 9.
Seaweeds have increasing importance because of their bioactive compounds and their potential application in different industries. Liquid seaweed extract are commercially used as an agricultural biofertilizer. The current work investigated the potential of a commercial liquid seaweed extract, named TrueAlgaeMax (TAM), as a diet feed additive for Nile tilapia Oreochromis niloticus. Five diets (D0, D0.5, D1, D1.5, and D2) were supplemented with different TAM concentrations (0, 0.5, 1, 1.5, and 2%, respectively) to investigate the growth performance, feed utilization, and non-specific immunity of O. niloticus challenged with Aeromonas hydrophila. Healthy mono-sex O. niloticus fingerlings were randomly stocked for 70 days in net enclosures (3 m × 6 m × 1 m) at a density of 20 fish m−3 with an average initial body weight of 50 g fingerling−1 (three groups for each treatment with a total of 1080 fish per treatment). Diet D2 represented the highest weight gain (WG) value (161.29 g), average daily weight gain (ADWG) value (2.30 g day−1), and specific growth rate (SGR) value (2.40% day−1) and achieved the best feed conversion ratio (FCR) value (1.31). In addition, D2 achieved the highest serum protein (5.47 g dL−1), lysozyme (3.75 μg mL−1), and respiratory burst activity (1.89 mg mL−1). Fish mortality decreased by increasing TAM levels. The GC-Mass data of TAM showed nine main phytochemical compounds belonging to seven different important bioactive groups reported as immunity enhancer and growth promoting and showed antioxidant and antimicrobial properties. The results recommended that increasing the levels of TAM up to 2% as feed additive for O. niloticus diet strongly enhances growth performance, feed utilization, and non-specific immunity of Nile tilapia O. niloticus challenged with A. hydrophila. Considering seaweed additions (dry weight or extract) as aquaculture feed additive is of importance.
Mohamed Ashour; Mohamed M. Mabrouk; Hala F. Ayoub; Mohamed M.M.M. El-Feky; Sharawy Z. Zaki; Seyed Hossein Hoseinifar; Waldemar Rossi; Hien Van Doan; Ehab El-Haroun; Ashraf M.A-S. Goda. Effect of dietary seaweed extract supplementation on growth, feed utilization, hematological indices, and non-specific immunity of Nile Tilapia, Oreochromis niloticus challenged with Aeromonas hydrophila. Journal of Applied Phycology 2020, 32, 1 -13.
AMA StyleMohamed Ashour, Mohamed M. Mabrouk, Hala F. Ayoub, Mohamed M.M.M. El-Feky, Sharawy Z. Zaki, Seyed Hossein Hoseinifar, Waldemar Rossi, Hien Van Doan, Ehab El-Haroun, Ashraf M.A-S. Goda. Effect of dietary seaweed extract supplementation on growth, feed utilization, hematological indices, and non-specific immunity of Nile Tilapia, Oreochromis niloticus challenged with Aeromonas hydrophila. Journal of Applied Phycology. 2020; 32 (5):1-13.
Chicago/Turabian StyleMohamed Ashour; Mohamed M. Mabrouk; Hala F. Ayoub; Mohamed M.M.M. El-Feky; Sharawy Z. Zaki; Seyed Hossein Hoseinifar; Waldemar Rossi; Hien Van Doan; Ehab El-Haroun; Ashraf M.A-S. Goda. 2020. "Effect of dietary seaweed extract supplementation on growth, feed utilization, hematological indices, and non-specific immunity of Nile Tilapia, Oreochromis niloticus challenged with Aeromonas hydrophila." Journal of Applied Phycology 32, no. 5: 1-13.
In recent years, global aquaculture has increased significantly, and therefore the demand for animal protein used to feed farmed fish has increased, this has led to the search for other sources of animal protein instead of fish meal. Amphipods as Gammarus are among those possible alternatives due to its abundant productivity and appropriate nutritional content, as the current study showed that its protein content was 40%, carbohydrates 27.4%, fat 5.5%, and it also contained antioxidants such as tannic acid (223.146 mg/100g) and β-carotene (21602.964 IU/100g) in addition to many essential vitamins in considerable values such as Vitamin B2 338.3842 mg/100g, Vitamin B6 (635.616 mg/100g), Vitamin B12 (419.5017 mg/100g), Vitamin A (19623.98 IU/100g), Vitamin E (177.958 mg/100g), Vitamin D (59.672 mg/100g), and Folic Acid (521.185 µg/100g). Gammarus pulex has been isolated from the natural resource (Lake Mariout), and after 90 days of rearing in tanks (initial stock: 30 individuals/liter) supplied with four different types of nests: pored wood pieces, balls of palm fibers, balls of palm leaves, and balls of nylon net "Haba net", one type for each tank. The obtained data revealed that balls of palm leaves are the best nest for rearing as it gave the highest yields (127 individuals/liter), the average obtained numbers of the different rearing tanks was 108 individuals/liter with average wet weight 2.16g/l, which means 1m3 water can produce approximately 2160g of Gammarus. A new nutritional formula was used in the current study to feed the cultivated Gammarus in its various stages, which gave good results that were reflected in its productivity and the analysis of its chemical components.
Hamdy A. Abo-Taleb; Amr F. Zeina; Mohamed Ashour; Mohamed M. Mabrouk; Ahmed E. Sallam; Mohamed M M El-Feky. Isolation and cultivation of the freshwater amphipod Gammarus pulex (Linnaeus, 1758), with an evaluation of its chemical and nutritional content. Egyptian Journal of Aquatic Biology and Fisheries 2020, 24, 69 -82.
AMA StyleHamdy A. Abo-Taleb, Amr F. Zeina, Mohamed Ashour, Mohamed M. Mabrouk, Ahmed E. Sallam, Mohamed M M El-Feky. Isolation and cultivation of the freshwater amphipod Gammarus pulex (Linnaeus, 1758), with an evaluation of its chemical and nutritional content. Egyptian Journal of Aquatic Biology and Fisheries. 2020; 24 (2):69-82.
Chicago/Turabian StyleHamdy A. Abo-Taleb; Amr F. Zeina; Mohamed Ashour; Mohamed M. Mabrouk; Ahmed E. Sallam; Mohamed M M El-Feky. 2020. "Isolation and cultivation of the freshwater amphipod Gammarus pulex (Linnaeus, 1758), with an evaluation of its chemical and nutritional content." Egyptian Journal of Aquatic Biology and Fisheries 24, no. 2: 69-82.
We performed field experiments to evaluate the influence of two extraction treatments, seaweed (Pterocladia capillacea S.G. Gmelin) water extraction (WE) and ultrasound-assisted water extraction (USWE) at three concentrations (5%, 10%, and 15%), as well as control NPK traditional mineral fertilizer on the growth, yield, minerals, and antioxidants of Jew’s Mallow (Corchorus olitorius L.) during the two seasons of 2016 and 2017 in Egypt. Plant height, number of leaves, and fresh weight of WE10 treatment were the highest (p < 0.05) as 59.67 cm, 10.67 and 2.41 kg m−2 in 2016, respectively, and 57.33 cm, 11.00 and 2.32 kg m−2 in 2017, respectively. WE10 and USWE5 treatments produced the highest dry matter (17.07%) in 2016 and (16.97%) in 2017, respectively. WE10 plants had an increased water productivity of 41.2% relative to control plants in both seasons. The highest chlorophyll ‘a’ was recorded after the WE10 treatment in 2016 and 2017 (17.79 μg g−1 and 17.84 μg g−1, respectively). The highest levels of total antioxidant capacity, total phenolics, and total flavonoids were also recorded after the WE10 treatment. Application of WE10 boosted growth, yield, minerals, and antioxidants of Jew’s Mallow. The CROPWAT model was used to estimate the evapotranspiration, irrigation water requirements, and yield response to irrigation scheduling. Our data showed a yield reduction in the initial growth stage if a limited amount of water was provided. Therefore, irrigation water should be provided during the most important stages of crop development with the choice of effective irrigation practices to avoid water losses, as this helps to maximize yield.
Mohamed Ashour; Ahmed A. El-Shafei; Hanan M. Khairy; Doaa Y. Abd-Elkader; Mohamed A. Mattar; Abed Alataway; Shimaa M. Hassan. Effect of Pterocladia capillacea Seaweed Extracts on Growth Parameters and Biochemical Constituents of Jew’s Mallow. Agronomy 2020, 10, 420 .
AMA StyleMohamed Ashour, Ahmed A. El-Shafei, Hanan M. Khairy, Doaa Y. Abd-Elkader, Mohamed A. Mattar, Abed Alataway, Shimaa M. Hassan. Effect of Pterocladia capillacea Seaweed Extracts on Growth Parameters and Biochemical Constituents of Jew’s Mallow. Agronomy. 2020; 10 (3):420.
Chicago/Turabian StyleMohamed Ashour; Ahmed A. El-Shafei; Hanan M. Khairy; Doaa Y. Abd-Elkader; Mohamed A. Mattar; Abed Alataway; Shimaa M. Hassan. 2020. "Effect of Pterocladia capillacea Seaweed Extracts on Growth Parameters and Biochemical Constituents of Jew’s Mallow." Agronomy 10, no. 3: 420.
A coccoid green microalga, namely Chlorococcum minutum NIOF17/002, was isolated from the Delta region of Egypt, and further extracted with solvents both sequentially and individually to study antimicrobial and antioxidant activities of this microalga. The acetone extract gave maximum antimicrobial activity against the 5 bacterial pathogens and showed the lowest minimum inhibitory concentration against Salmonella typhi, while the methanol extract showed the highest reducing activity and total antioxidant capacity (3.92 and 9.83 mg ascorbic acid equivalents g−1, respectively) among the extracts. The total phenolic content (TPC) in methanol extract was found to be 6.65 mg gallic acid equivalents g−1, which was the highest TPC of the extracts. Acetone and methanol extracts were subsequently characterized using gas chromatography–mass spectrometry for identifying chemical compounds. The former was found to be enriched with palmitic and linolenic acids, and the latter contained mostly eugenol and methylated fatty acids. The presence of these bioactive compounds in C. minutum NIOF17/002 might make it beneficial as a source of antimicrobial and antioxidant agents.
Mostafa E. Elshobary; Rania A. El-Shenody; Mohamed Ashour; Hossain M. Zabed; Xianghui Qi. Antimicrobial and antioxidant characterization of bioactive components from Chlorococcum minutum. Food Bioscience 2020, 35, 100567 .
AMA StyleMostafa E. Elshobary, Rania A. El-Shenody, Mohamed Ashour, Hossain M. Zabed, Xianghui Qi. Antimicrobial and antioxidant characterization of bioactive components from Chlorococcum minutum. Food Bioscience. 2020; 35 ():100567.
Chicago/Turabian StyleMostafa E. Elshobary; Rania A. El-Shenody; Mohamed Ashour; Hossain M. Zabed; Xianghui Qi. 2020. "Antimicrobial and antioxidant characterization of bioactive components from Chlorococcum minutum." Food Bioscience 35, no. : 100567.
Little is known about the diversity of Calanoida, Copepoda, in different habitats of the north-western Red Sea. In this study, biodiversity of Calanoida, Copepoda, during the cold and warm seasons of 2017, were observed at 12 stations belonging to four different habitats (coral reef (CR), sheltered shallow lagoons (SSL), seagrass (SG), and open deep-water (ODW) habitats) in the Hurghada shelf, north-western Red Sea. SSL habitats were the most affected by environmental conditions, especially temperature, salinity, and depth. Some calanoid species were restricted to certain habitats, others were adapted to live in more than one habitat, while some species showed a wide distribution in all habitats. ODW habitats showed maximum diversity and density of the calanoid species. The effects of temperature and salinity were distinct in the SG and SSL. The results clearly showed that different Red Sea habitats affected the biodiversity of calanoid copepods.
Hamdy Abo-Taleb; Mohamed Ashour; Ahmed El-Shafei; Abed Alataway; Mahmoud M. Maaty; Hamdy Abo-Taleb. Biodiversity of Calanoida Copepoda in Different Habitats of the North-Western Red Sea (Hurghada Shelf). Water 2020, 12, 656 .
AMA StyleHamdy Abo-Taleb, Mohamed Ashour, Ahmed El-Shafei, Abed Alataway, Mahmoud M. Maaty, Hamdy Abo-Taleb. Biodiversity of Calanoida Copepoda in Different Habitats of the North-Western Red Sea (Hurghada Shelf). Water. 2020; 12 (3):656.
Chicago/Turabian StyleHamdy Abo-Taleb; Mohamed Ashour; Ahmed El-Shafei; Abed Alataway; Mahmoud M. Maaty; Hamdy Abo-Taleb. 2020. "Biodiversity of Calanoida Copepoda in Different Habitats of the North-Western Red Sea (Hurghada Shelf)." Water 12, no. 3: 656.
The marine flagellated Chlorophyta Tetraselmis suecica is among the most important live food species in marine aquaculture. In the present study, the effects of dietary supplementation of dried marine microalgae, Tetraselmis suecica, on growth performance; feed utilization; chemical composition; gene expression of superoxide dismutase (SOD), glutathione peroxidase (GPx) and insulin‐like growth factor 2 (IGF‐II) gene of Pacific white shrimp, Litopenaeus vannamei; muscle protein polymorphism; and microbial count were assessed and evaluated. Three hundred and sixty L. vannamei (postlarvae) Pls (0.124 ± 0.002 g) were randomly stocked into 40‐L glass aquaria (30 shrimp/aquarium) and fed three times daily four tested diets: a basal diet (control), diet incorporated with 2.5 g kg−1 dried T. suecica (T1), 5 g kg−1 dried T. suecica (T2) and 7.5 g kg−1 dried T. suecica (T3) in triplicates, for 90 days. At the end of the trial, the survival rate (SR) of L. vannamei fed diets supplemented with different levels of T. suecica was significantly (p < .05) higher than the control diet. The highest weight gain and specific growth rate and the best feed conversion ratio were recorded on L. vannamei fed a diet supplemented with a 7.5 g/kg dried T. suecica. The highest protein, lipid and ash contents were obtained in L. vannamei fed the diet containing 7.5 g/kg T. suecica, when compared with the remaining tested diets. The gene expression of antioxidant genes SOD and GPx was the lowest in the T3 group in comparison with the control group. Meanwhile, expression level of IGF‐II was higher in the T2 group. The total heterotrophic bacterial count was significantly (p < .05) increased with the cumulative T. suecica level, while no significant (p > .05) differences were found in the total Vibrio count among treatments. Overall, the present results have shown that the diet supplemented with the highest inclusion level of dried T. suecica resulted in improved growth and nutrient utilization.
Zaki Zaki Sharawy; Mohamed Ashour; Eman Abbas; Ola Ashry; Mohamed Helal; Hany Nazmi; Mahmoud Kelany; Abdelwahab Kamel; Mohamed Hassaan; Waldemar Rossi Jr.; Ehab El-Haroun; Ashraf Goda. Effects of dietary marine microalgae, Tetraselmis suecica , on production, gene expression, protein markers and bacterial count of Pacific white shrimp Litopenaeus vannamei. Aquaculture Research 2020, 51, 2216 -2228.
AMA StyleZaki Zaki Sharawy, Mohamed Ashour, Eman Abbas, Ola Ashry, Mohamed Helal, Hany Nazmi, Mahmoud Kelany, Abdelwahab Kamel, Mohamed Hassaan, Waldemar Rossi Jr., Ehab El-Haroun, Ashraf Goda. Effects of dietary marine microalgae, Tetraselmis suecica , on production, gene expression, protein markers and bacterial count of Pacific white shrimp Litopenaeus vannamei. Aquaculture Research. 2020; 51 (6):2216-2228.
Chicago/Turabian StyleZaki Zaki Sharawy; Mohamed Ashour; Eman Abbas; Ola Ashry; Mohamed Helal; Hany Nazmi; Mahmoud Kelany; Abdelwahab Kamel; Mohamed Hassaan; Waldemar Rossi Jr.; Ehab El-Haroun; Ashraf Goda. 2020. "Effects of dietary marine microalgae, Tetraselmis suecica , on production, gene expression, protein markers and bacterial count of Pacific white shrimp Litopenaeus vannamei." Aquaculture Research 51, no. 6: 2216-2228.
Seaweeds have a growing number of successful applications in the food industry, medicine and in the cosmetic industry, which increases the importance of evaluating their chemical composition. In the present study, three common Egyptian seaweeds (Dictyota dichotoma, Turbinaria decurrens and Laurencia obtusa) were collected from the Red Sea coast, Suez, Egypt. The chemical profile of the three seaweeds was studied beside the antioxidant activity of their extracts. The results indicated that the amount of carbohydrate was greater than the protein and lipid contents in the three seaweeds, with a natural richness in minerals and antioxidants besides considerable amounts of monounsaturated and polyunsaturated fatty acids, including Omega-3 and Omega-6 fatty acids. All essential amino acids for human were found in the three seaweeds, with significant amounts of aspartic and glutamic acids. Furthermore, the results of the antioxidant activity assays were consistent with the antioxidant contents (phenols, flavonoids, alkaloids, vitamin C, carotenoids) of each seaweed. D. dichotoma was the most valuable seaweed of the three species studied, due to its relatively high protein content of 7.28 ± 0.25%, moderate carbohydrate content of 25.35 ± 0.32%, and highest pigment and antioxidant contents. In conclusion, these three seaweeds, especially Dictyota dichotoma, have an interesting chemical composition with a prospective nutritional and pharmaceutical value.
Rania A. El-Shenody; Mohamed Ashour; Mohamed Mahmoud Essam Ghobara. Evaluating the chemical composition and antioxidant activity of three Egyptian seaweeds: Dictyota dichotoma, Turbinaria decurrens, and Laurencia obtusa. Brazilian Journal of Food Technology 2019, 22, 1 .
AMA StyleRania A. El-Shenody, Mohamed Ashour, Mohamed Mahmoud Essam Ghobara. Evaluating the chemical composition and antioxidant activity of three Egyptian seaweeds: Dictyota dichotoma, Turbinaria decurrens, and Laurencia obtusa. Brazilian Journal of Food Technology. 2019; 22 ():1.
Chicago/Turabian StyleRania A. El-Shenody; Mohamed Ashour; Mohamed Mahmoud Essam Ghobara. 2019. "Evaluating the chemical composition and antioxidant activity of three Egyptian seaweeds: Dictyota dichotoma, Turbinaria decurrens, and Laurencia obtusa." Brazilian Journal of Food Technology 22, no. : 1.