The Experts below are selected from a list of 234 Experts worldwide ranked by ideXlab platform
Junfeng Qian - One of the best experts on this subject based on the ideXlab platform.
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cogeneration of biodiesel and nontoxic Cottonseed meal from Cottonseed processed by two phase solvent extraction
Energy Conversion and Management, 2010Co-Authors: Junfeng QianAbstract:Abstract In the present work, the preparation of biodiesel from Cottonseed oil produced by two-phase solvent extraction (TSE) was studied. The experimental results of TSE process of Cottonseed showed that the optimal extraction conditions were 30 g samples, 240 mL extraction solvent mixture and methanol/petroleum ether volume ratio 60:40, extraction temperature 30 °C, extraction time 30 min. Under the extraction conditions, the extraction rate of Cottonseed oil could achieve 98.3%, the free fatty acid (FFA) and water contents of Cottonseed oil were reduced to 0.20% and 0.037%, respectively, which met the requirement of alkali-catalyzed transesterification. The free gossypol (FG) content in Cottonseed meal produced from two-phase solvent extraction could reduce to 0.014% which was far below the FAO standard. And the nontoxic Cottonseed meal could be used as animal protein feed resources. After the TSE process of Cottonseed, the investigations were carried out on transesterification of methanol with oil–petroleum ether solution coming from TSE process in the presence of sodium hydroxide (CaO) as the solid base catalyst. The influences of weight ratio of petroleum ether to Cottonseed oil, reaction temperature, molar ratio of methanol to oil, alkali catalyst amount and reaction time on Cottonseed oil conversion were respectively investigated by mono-factor experiments. The conversion of Cottonseed oil into fatty acid methyl ester (FAME) could achieve 98.6% with 3:1 petroleum ether/oil weight ratio, 65 °C reaction temperature, 9:1 methanol/oil mole ratio, 4% (catalyst/oil weight ratio, w/w) solid base catalyst amount and 3 h reaction time. The properties of FAME product prepared from Cottonseed oil produced by two-phase solvent extraction met the ASTM specifications for biodiesel.
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Cogeneration of biodiesel and nontoxic Cottonseed meal from Cottonseed processed by two-phase solvent extraction.
Energy Conversion and Management, 2010Co-Authors: Junfeng Qian, Zhi Yun, Haixian ShiAbstract:Abstract In the present work, the preparation of biodiesel from Cottonseed oil produced by two-phase solvent extraction (TSE) was studied. The experimental results of TSE process of Cottonseed showed that the optimal extraction conditions were 30 g samples, 240 mL extraction solvent mixture and methanol/petroleum ether volume ratio 60:40, extraction temperature 30 °C, extraction time 30 min. Under the extraction conditions, the extraction rate of Cottonseed oil could achieve 98.3%, the free fatty acid (FFA) and water contents of Cottonseed oil were reduced to 0.20% and 0.037%, respectively, which met the requirement of alkali-catalyzed transesterification. The free gossypol (FG) content in Cottonseed meal produced from two-phase solvent extraction could reduce to 0.014% which was far below the FAO standard. And the nontoxic Cottonseed meal could be used as animal protein feed resources. After the TSE process of Cottonseed, the investigations were carried out on transesterification of methanol with oil–petroleum ether solution coming from TSE process in the presence of sodium hydroxide (CaO) as the solid base catalyst. The influences of weight ratio of petroleum ether to Cottonseed oil, reaction temperature, molar ratio of methanol to oil, alkali catalyst amount and reaction time on Cottonseed oil conversion were respectively investigated by mono-factor experiments. The conversion of Cottonseed oil into fatty acid methyl ester (FAME) could achieve 98.6% with 3:1 petroleum ether/oil weight ratio, 65 °C reaction temperature, 9:1 methanol/oil mole ratio, 4% (catalyst/oil weight ratio, w/w) solid base catalyst amount and 3 h reaction time. The properties of FAME product prepared from Cottonseed oil produced by two-phase solvent extraction met the ASTM specifications for biodiesel.
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cogeneration of biodiesel and nontoxic Cottonseed meal from Cottonseed through in situ alkaline transesterification
Energy & Fuels, 2009Co-Authors: Junfeng QianAbstract:In the present work the in situ alkaline transesterification of Cottonseed oil with methanol for the production of biodiesel and nontoxic Cottonseed meal was studied. The methyl ester of Cottonseed oil fatty acids could be produced satisfactorily by in situ alkaline transesterification of Cottonseed oil. The experimental results of water removal pretreatment methods of milled Cottonseed showed that methanol washing was better than vacuum oven drying. After water removal pretreatment of milled Cottonseed with methanol washing, the influences of NaOH concentration in methanol, different molar ratios of methanol to oil, reaction temperature, and reaction time on Cottonseed conversion and free gossypol content in Cottonseed meal were respectively investigated by monofactor experiments. Then the significance of the factors was investigated by orthogonal design. Reaction conditions for maximum conversion of Cottonseed oil into FAME were identified using statistical experimental design methods. For milled cotton...
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in situ alkaline transesterification of Cottonseed oil for production of biodiesel and nontoxic Cottonseed meal
Bioresource Technology, 2008Co-Authors: Junfeng Qian, F. WangAbstract:Abstract The production of fatty acid methyl ester (FAME) by direct in situ alkaline-catalyzed transesterification of the triglycerides (TG) in Cottonseeds was examined. The experimental results showed that the amount of Cottonseed oil dissolved in methanol was approximately 99% of the total oil and the conversion of this oil could achieve 98% under the following conditions: less than 2% moisture content in Cottonseed flours, 0.3–0.335 mm particle size, 0.1 mol/L NaOH concentration in methanol, 135:1 methanol/oil mole ratio, 40 °C reaction temperature and 3 h reaction time. Further, the effects of co-solvent petroleum ether and methanol recycling on the Cottonseed oil extraction and conversion were also investigated. The use of alkaline methanol as extraction and reaction solvent, which would be useful for extraction oil and gossypol, would reduce the gossypol content in the Cottonseed meal. The free and total gossypol contents in the Cottonseed meal obtained from in situ alkaline transesterification were far below the FAO standard. And the nontoxic Cottonseed meal could be used as animal protein feed resources.
F. Wang - One of the best experts on this subject based on the ideXlab platform.
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in situ alkaline transesterification of Cottonseed oil for production of biodiesel and nontoxic Cottonseed meal
Bioresource Technology, 2008Co-Authors: Junfeng Qian, F. WangAbstract:Abstract The production of fatty acid methyl ester (FAME) by direct in situ alkaline-catalyzed transesterification of the triglycerides (TG) in Cottonseeds was examined. The experimental results showed that the amount of Cottonseed oil dissolved in methanol was approximately 99% of the total oil and the conversion of this oil could achieve 98% under the following conditions: less than 2% moisture content in Cottonseed flours, 0.3–0.335 mm particle size, 0.1 mol/L NaOH concentration in methanol, 135:1 methanol/oil mole ratio, 40 °C reaction temperature and 3 h reaction time. Further, the effects of co-solvent petroleum ether and methanol recycling on the Cottonseed oil extraction and conversion were also investigated. The use of alkaline methanol as extraction and reaction solvent, which would be useful for extraction oil and gossypol, would reduce the gossypol content in the Cottonseed meal. The free and total gossypol contents in the Cottonseed meal obtained from in situ alkaline transesterification were far below the FAO standard. And the nontoxic Cottonseed meal could be used as animal protein feed resources.
Omran Alishah - One of the best experts on this subject based on the ideXlab platform.
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the influence of cooking process on the microwave assisted extraction of Cottonseed oil
Journal of Food Science and Technology-mysore, 2015Co-Authors: Mostafa Taghvaei, Seid Mahdi Jafari, Shahram Nowrouzieh, Omran AlishahAbstract:Cooking process is one of the most energy and time consuming steps in the edible oil extraction factories. The main goal of this study was Cottonseed oil extraction by microwave radiation and elimination of any heat treatment of Cottonseeds before extraction. The effect of cooking process on the physicochemical properties of extracted oil from two varieties of Cottonseed (Pak and Sahel) was evaluated by free fatty acid content, melting point, smoke point and refractive index. Our results didn’t show any significant differences between cooked and uncooked samples (P > 0.05) regarding physicochemical characteristics. From GC analysis of extracted oils, it was found there is no significant difference in fatty acid composition of cooked, uncooked and control (conventional extraction) samples. The thermal stability (Rancimat) analysis of oil samples showed the cooking process could cause a slight increase in the stability of oils for both varieties (about 40 min). The cooking process also increased total extracted phenolic compounds and considerably decreased total gossypol content of the Cottonseed oil; but the extraction efficiency didn’t change considerably after elimination of the cooking process. It can be concluded that microwave rays can destroy the structure of oil cells during process and facilitate the oil extraction without any heat treatment before extraction.
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optimization of microwave assisted extraction of Cottonseed oil and evaluation of its oxidative stability and physicochemical properties
Food Chemistry, 2014Co-Authors: Mostafa Taghvaei, Seid Mahdi Jafari, Shahram Nowrouzieh, Elham Assadpoor, Omran AlishahAbstract:Microwave assisted extraction (MAE) is a novel method, which can reduce the extraction time and solvent consumption. This study aimed to evaluate the influence of MAE on oxidative stability and physicochemical properties of Cottonseed oil. We found that the optimum extraction conditions were: irradiation time 3.57 min; Cottonseed moisture content 14% and Cottonseed to solvent ratio 1:4, which resulted in an extraction efficiency of 32.6%, 46 ppm total phenolic content, 0.7% free fatty acids, peroxide value of 0.2 and 11.5 h of Rancimat oxidative stability at 110 °C. GC analysis for MAE Cottonseed oil determined palmitic acid (23.6%), stearic acid (2.3%), oleic acid (15.6%) and linoleic acid (55.1%), which were not significant different (P>0.05) than conventionally-extracted (control) Cottonseed oil. MAE oil samples from whole Cottonseed (without dehulling) had the greatest long-term stability, more than oil samples containing BHT.
Mostafa Taghvaei - One of the best experts on this subject based on the ideXlab platform.
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the influence of cooking process on the microwave assisted extraction of Cottonseed oil
Journal of Food Science and Technology-mysore, 2015Co-Authors: Mostafa Taghvaei, Seid Mahdi Jafari, Shahram Nowrouzieh, Omran AlishahAbstract:Cooking process is one of the most energy and time consuming steps in the edible oil extraction factories. The main goal of this study was Cottonseed oil extraction by microwave radiation and elimination of any heat treatment of Cottonseeds before extraction. The effect of cooking process on the physicochemical properties of extracted oil from two varieties of Cottonseed (Pak and Sahel) was evaluated by free fatty acid content, melting point, smoke point and refractive index. Our results didn’t show any significant differences between cooked and uncooked samples (P > 0.05) regarding physicochemical characteristics. From GC analysis of extracted oils, it was found there is no significant difference in fatty acid composition of cooked, uncooked and control (conventional extraction) samples. The thermal stability (Rancimat) analysis of oil samples showed the cooking process could cause a slight increase in the stability of oils for both varieties (about 40 min). The cooking process also increased total extracted phenolic compounds and considerably decreased total gossypol content of the Cottonseed oil; but the extraction efficiency didn’t change considerably after elimination of the cooking process. It can be concluded that microwave rays can destroy the structure of oil cells during process and facilitate the oil extraction without any heat treatment before extraction.
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optimization of microwave assisted extraction of Cottonseed oil and evaluation of its oxidative stability and physicochemical properties
Food Chemistry, 2014Co-Authors: Mostafa Taghvaei, Seid Mahdi Jafari, Shahram Nowrouzieh, Elham Assadpoor, Omran AlishahAbstract:Microwave assisted extraction (MAE) is a novel method, which can reduce the extraction time and solvent consumption. This study aimed to evaluate the influence of MAE on oxidative stability and physicochemical properties of Cottonseed oil. We found that the optimum extraction conditions were: irradiation time 3.57 min; Cottonseed moisture content 14% and Cottonseed to solvent ratio 1:4, which resulted in an extraction efficiency of 32.6%, 46 ppm total phenolic content, 0.7% free fatty acids, peroxide value of 0.2 and 11.5 h of Rancimat oxidative stability at 110 °C. GC analysis for MAE Cottonseed oil determined palmitic acid (23.6%), stearic acid (2.3%), oleic acid (15.6%) and linoleic acid (55.1%), which were not significant different (P>0.05) than conventionally-extracted (control) Cottonseed oil. MAE oil samples from whole Cottonseed (without dehulling) had the greatest long-term stability, more than oil samples containing BHT.
Shahram Nowrouzieh - One of the best experts on this subject based on the ideXlab platform.
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the influence of cooking process on the microwave assisted extraction of Cottonseed oil
Journal of Food Science and Technology-mysore, 2015Co-Authors: Mostafa Taghvaei, Seid Mahdi Jafari, Shahram Nowrouzieh, Omran AlishahAbstract:Cooking process is one of the most energy and time consuming steps in the edible oil extraction factories. The main goal of this study was Cottonseed oil extraction by microwave radiation and elimination of any heat treatment of Cottonseeds before extraction. The effect of cooking process on the physicochemical properties of extracted oil from two varieties of Cottonseed (Pak and Sahel) was evaluated by free fatty acid content, melting point, smoke point and refractive index. Our results didn’t show any significant differences between cooked and uncooked samples (P > 0.05) regarding physicochemical characteristics. From GC analysis of extracted oils, it was found there is no significant difference in fatty acid composition of cooked, uncooked and control (conventional extraction) samples. The thermal stability (Rancimat) analysis of oil samples showed the cooking process could cause a slight increase in the stability of oils for both varieties (about 40 min). The cooking process also increased total extracted phenolic compounds and considerably decreased total gossypol content of the Cottonseed oil; but the extraction efficiency didn’t change considerably after elimination of the cooking process. It can be concluded that microwave rays can destroy the structure of oil cells during process and facilitate the oil extraction without any heat treatment before extraction.
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optimization of microwave assisted extraction of Cottonseed oil and evaluation of its oxidative stability and physicochemical properties
Food Chemistry, 2014Co-Authors: Mostafa Taghvaei, Seid Mahdi Jafari, Shahram Nowrouzieh, Elham Assadpoor, Omran AlishahAbstract:Microwave assisted extraction (MAE) is a novel method, which can reduce the extraction time and solvent consumption. This study aimed to evaluate the influence of MAE on oxidative stability and physicochemical properties of Cottonseed oil. We found that the optimum extraction conditions were: irradiation time 3.57 min; Cottonseed moisture content 14% and Cottonseed to solvent ratio 1:4, which resulted in an extraction efficiency of 32.6%, 46 ppm total phenolic content, 0.7% free fatty acids, peroxide value of 0.2 and 11.5 h of Rancimat oxidative stability at 110 °C. GC analysis for MAE Cottonseed oil determined palmitic acid (23.6%), stearic acid (2.3%), oleic acid (15.6%) and linoleic acid (55.1%), which were not significant different (P>0.05) than conventionally-extracted (control) Cottonseed oil. MAE oil samples from whole Cottonseed (without dehulling) had the greatest long-term stability, more than oil samples containing BHT.
