BIOPROCESS AND BIOSYSTEMS ENGINEERING
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2015
·Vol. 38
·期 11
·2053-2061
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IF 1.997
Zeng Chao-Xi,Qi Sui-Jian,Xin Rui-Pu,Yang Bo,Wang Yong-Hua
In this study, enzymatic selective esterification of oleic acid with glycerol based on deep eutectic solvent acting as substrate and solvent was studied. As choline chloride (ChCl) or betaine can effectively change the chemical reaction characteristics of glycerol when they are mixed with a certain molar ratio of glycerol, several factors crucial to the lipase catalytic esterification of glycerol with oleic acid was investigated. Results showed that, betaine had more moderate effects than ChCl on the lipase, and water content had an important influence of the esterification and the enzyme selectivity. Significant changes of the glyceride compositions and enzyme selectivity were found in ChCl adding system compared with pure glycerol system; optimum accumulation of DAG especially 1,3-DAG because of the eutectic effect of ChCl was found in this system. Furthermore, in a model 1,3-DAG esterification synthesis system catalyzed by Novozym 435, high content (42.9 mol%) of the 1,3-DAG could be obtained in ChCl adding system within 1 h.
研究领域:
生物化学
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食品科学
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DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
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2022
·
IF 10.723
Yongzhen Wang,Xiang Yu,Weiqiang Fan,Rulin Liu,Yuyan Liu
Oil spills threaten ecosystem and health seriously. Porous foams have been proved as ideal candidates for oil absorbents, however, many with poor oil retention (re-bleeding). Here, we creatively developed a composite foam oil absorbent capable of oil absorption and oil gelation , based on porous alginate foam and hydroxyl aluminum stearate oil gelator . The microstructure of alginate foam can be adjusted by the addition of t-butanol in the solvent, and long alkyl chains of gelator endow foam skeleton with good hydrophobicity , avoiding secondary pollution from traditional hydrophobic chemical modification. Interconnected skeleton decorated by oleophilic gelators contributes to high oil absorption. Oleophilic gelator can self-assemble into 3D network to entrap oils to form gels, giving rise to effective oil retention, realizing the integration of high oil absorption and oil retention. The natural abundant, low-cost composite foam would be promising for tackling oil spills.
研究领域:
材料科学
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环境科学
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化学工程
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DOI
PubMed
高影响因子
Frontiers in Nutrition
·
2022
·
IF 6.59
Feng Konglong,Fang Huaiyi,Liu Guo,Dai Weijie,Song Mingyue,Fu Jiangyan,Wen Linfeng,Kan Qixin,Chen Yunjiao,Li Yuanyou,Huang Qingrong,Cao Yong
Soy sauce by-product oil (SSBO), a by-product of the soy sauce production process, is the lack of utilization due to an abundance of free fatty acid (FFA) and fatty acid ethyl ester (EE). The utilization of low-cost SSBO to produce value-added diacylglycerol (DAG)-enriched oil and its applications are promising for the sustainability of the oil industry. The objective of this study was to utilize SSBO containing a high content of EE and FFA as raw material to synthesize DAG-enriched oil and to evaluate its nutritional properties in fish. Based on different behaviors between the glycerolysis of EE and the esterification of FFA in one-pot enzymatic catalysis, a two-step vacuum-mediated conversion was developed for the maximum conversions of EE and FFA to DAG. After optimization, the maximum DAG yield (66.76%) and EE and FFA conversions (96 and 93%, respectively) were obtained under the following optimized conditions: lipase loading 3%, temperature 38°C, substrate molar ratio (glycerol/FFA and EE) 21:40, a vacuum combination of 566 mmHg within the initial 10 h and 47 mmHg from the 10th to 14th hour. Further nutritional study in fish suggested that the consumption of DAG-enriched oil was safe and served as a functional oil to lower lipid levels in serum and liver, decrease lipid accumulation and increase protein content in body and muscle tissues, and change fatty acid composition in muscle tissues. Overall, these findings were vital for the effective utilization of SSBO resources and the development of future applications for DAG-enriched oil as lipid-lowering functional oil in food.
研究领域:
食品科学
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营养学
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生物技术
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DOI
PubMed
高影响因子
LANGMUIR
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2016
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IF 3.993
Defeng Li,Ang Wu,Guangyin Xu,Hua Lai,Zhongjun Cheng,Yuyan Liu
In this paper, we report a simple method based on assembling n-alkanoic acids on hierarchical structured copper toward preparing surfaces with tunable oil wetting performance in water. Surface wettability from superoleophobicity to superoleophilicity in water can be regulated through tuning the chain length of n-alkanoic acids. Importantly, even in strongly acid and basic water, such phenomena can still be observed. The cooperation between the hierarchical structures and the surface chemical composition variation is responsible for the controllability. Meanwhile, the tunable ability is universal and the controllability is suitable for various oils including silicon oil, n-hexane, and chloroform. Moreover, the method was also used on copper mesh substrates, and we reported the related application of selective oil/water separation. This paper provides a flexible strategy toward preparing surfaces with tunable oil wetting performances, which can also be suitable for other materials, and offers some fresh ideas in manipulating underwater oil wetting performances on surfaces.
研究领域:
材料科学
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表面化学
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环境工程
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DOI
PubMed
高影响因子
FOOD CHEMISTRY
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2024
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IF 8.5
Xuan Liu,Chunjin Huang,Dongming Lan,Weifei Wang,Yonghua Wang
Degumming is essential to eliminate undesired phospholipids from crude vegetable oils before being processed into high-quality products. The degumming efficiency is hampered by the separation of oil and water. To overcome this problem, we introduced an innovative enzymatic degumming strategy for various vegetable oils (rice bran, peanut and flaxseed oil) by combining phospholipase A1 with monoacylglycerol lipase. Compared to using phospholipase A1, the combination of the two enzymes significantly reduced phosphorus content, indicating better hydrolysis of phospholipids. Additionally, the primary hydrolysates by the combined enzymes were glycerylphosphorylcholine and glycerylphosphorylethanolamine that were more affinitive to water to improve oil-water separation and oil yield. Characteristic markers obtained from Partial Least Squares Discriminant Analysis model confirmed the advantages of combined enzymes over single enzyme. This advantage of combined enzymes was further validated in a simulated degumming process. Our findings provide a new enzymatic degumming strategy to expand the toolkit for crude oil refinery.
研究领域:
食品科学
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生物化学
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DOI
PubMed
高影响因子
ACS Applied Nano Materials
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2024
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IF 5.3
Tianwei Huo,Feiran Li,Jian Wang,Yunlu Pan,Xuezeng Zhao,Bharat Bhushan
Superoleophobic-superhydrophilic surfaces have been used for applications in the fabrication of antioil-fouling smart textiles and for immiscible oil–water mixtures and emulsions separation. Typically, these surfaces are constructed by depositing coatings with selective superwetting properties on porous structures. The facile electrospun technique involves the deposition of polymer solutions or melts through an electric field, resulting in nanometer-sized fibers that form nanofibrous membranes with hierarchical structures and a large specific surface area. In this study, superoleophobic-superhydrophilic nanofibrous membranes were prepared by blending perfluorooctanoic acid and polyacrylonitrile polymers and fluorinated TiO2 nanoparticles and electrospinning them. The prepared nanofibrous membranes exhibit superoleophobic and superhydrophilic properties, along with antioil-fouling characteristics. These membranes can separate immiscible oil–water mixtures and oil-in-water emulsions. This superoleophobic-superhydrophilic nanofibrous membranes have broad applications in industry and for environmental protection.
研究领域:
材料科学
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环境工程
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纳米技术
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DOI
高影响因子
Materials Chemistry Frontiers
·
2018
·Vol. 2
·期 10
·1784-1790
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IF 0
Peng Lv,Sudong Yang,Peng-Cheng Ma
Developing novel materials for oil–water separation is highly desirable to solve the problems caused by oil spills. Herein, a wheat-bran-based hybrid material was prepared using a hydrothermal process, and the feasibility of utilizing the hybrid as an oil gelling agent (OGA) was studied. The results showed that the obtained material exhibited a mild hydrophobicity with a water contact angle above 130°, and an oleophilicity with high adsorption capacity for various oils and organic solvents. Furthermore, the material continuously adsorbed and gelled the oil floating on the water surface, forming an oil–OGA aggregate when in contact with an oil–water mixture. The aggregation-induced gelation observed in the material makes it possible to conveniently remove oil spills from the surface of water. The low cost and environmentally benign process distinguishes the developed material as a candidate that is suitable for the clean-up of oil spills.
研究领域:
材料科学
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环境科学
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生物技术
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产品关联
DOI
SCIENCE OF THE TOTAL ENVIRONMENT
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2019
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IF 5.589
Cheng Chen,Baoliang Chen
Developing underwater superoleophobic filtration materials with robust stability and excellent anti-oil-fouling performance in harsh environments is desired for high efficiency oil/water separation. In this work, irregular hydrophilic graphene oxide (GO) was adopted as a coating material to modify oxidized copper mesh with desired hierarchical surface roughness and hydrophilic composition through a novel in situ copper ion induced crosslinking method. The combination of microscale copper wires and nanoscale hydrophilic GO sheets endowed the resultant GO coated oxidized copper mesh (GO@CuO) with unique underwater superoleophobicity and excellent anti-oil-fouling property. Moreover, the mesh exhibited excellent stability in corrosive solutions with no apparent variations in wetting properties, indicating its good stability. The as-prepared GO@CuO mesh can be applied to separate oil/water mixtures with high efficiency (>99.49%) and good reusability. Due to the excellent anti-oil-fouling property, high separation efficiency, and good stability, the as-prepared underwater superoleophobic mesh could find broad applications in oil/water separations.
研究领域:
材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2019
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IF 8.355
Jiahui Chen,Yi Zhou,Cailong Zhou,Xiufang Wen,Shouping Xu,Jiang Cheng,Pihui Pi
Quick and on-demand oil/water separation by superwetting materials has attracted wide attention in recent years. Herein, an underoil superhydrophobic and underwater superoleophobic cotton fabric was used for highly efficient and versatile oil/water separation, such as heavy oil/water separation, light oil/water separation, water-in-oil emulsion separation and oil-in-water emulsion separation, and even immiscible organic solvents separation. The fabric was fabricated via a simple two-step approach, including a vapor-liquid sol-gel process to deposit silica with thiols (SiO 2 -SH) particles, and a followed thiol-ene click reaction to graft 2-(dimethylamino) ethyl methacrylate (DMAEMA) and shows an underoil water contact angle (UOWCA) of 162° and an underwater oil contact angle (UWOCA) of 162°. Importantly, the fabric is able to maintain its high UOWCA and UWOCA after 120 h UV irradiation, 1000 g sand impact and after separately immersed in acid, base, neutral and NaCl solution for 168 h as well as various organic solvents for 240 h. The fabric with simple fabrication, excellent durability and versatile separation abilities might has potential application in various liquids separation.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
JOURNAL OF FOOD PROCESSING AND PRESERVATION
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2022
·Vol. 46
·期 5
·e16528
·
IF 2.609
Xuan Liu,Long Xu,Riming Luo,Dongxiao Sun-Waterhouse,Zhuang Liu,Qingqing Xu,Bo Yang,Dongming Lan,Weifei Wang,Yonghua Wang
Diacylglycerols are appreciated for their unique nutritional and pharmaceutical values. This study compared the thermal characteristics, oxidative stability, and frying applicability of a high-purity soybean-based diacylglycerol oil (SDO, 98.07%) and soybean oil (SO, 98.80%) that had similar fatty acid compositions. SDO showed similarity in solid fat content (SFC) at 35–40°C, whereas it showed differences in crystallization behaviors compared with SO. Specifically, SDO had crystals mainly in β form and its onset temperature of initial crystallization shifted to higher-melting temperature region. During thermal degradation, the contents of linoleic acid and linolenic acid in SDO decreased significantly lower than in SO, indicating higher oxidative stability of SDO. Potato strips and chicken drumsticks deep fried in SDO showed more desirable textures compared with those deep fried in SO. Glycidyl esters and 2(3)-monochloropropane-1,3(2)-diol esters were not detected in SDO after deep frying. Therefore, SDO serves as a potential alternative to SO for deep frying in food industry. Practical applications This study analyzed the physicochemical characteristics of highly pure soybean-based diacylglycerol oils comprehensively, and explored their thermal stability and applicability for food deep frying. The informative data and exploration would contribute to the potential utilization of soybean oil-based diacylglycerol oils in food processing.
研究领域:
食品科学
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营养学
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产品关联
DOI
高影响因子
Food Packaging and Shelf Life
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2022
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IF 8.749
Ren-jie Luo,Qin-bao Lin,Lei Zhu,Jian-wei Yan,Zhong Li
The extraction experiment of PAAs is carried out by using different solvents to seek out the best extraction one among methylene chloride , n-hexane, ethyl acetate and methanol. Migration test of PAAs from different polymer flexible packaging composite materials under both conditions of 40 ℃/10d and 70 ℃/2 h in neutral and oil simulants are conducted. An effective HPLC method in ESI+ mode is proposed to separate and screen 25 kinds of PAAs listed in SN/T 2893–2011. The extraction test clearly confirms the existence of PAAs in both polyurethane ink and UV-ink which are supposed to be yielded from dye intermediate and azo auxiliary . The comparison study of migration under 70 ℃/2 h for the corona and non-corona surfaces of the above-mentioned two kinds of films reveals that corona treatment improves the printing capacity and thus motivates the migration of PAAs, but has no effect on the final migration quantity.
研究领域:
食品安全
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分析化学
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产品关联
DOI
高影响因子
CATALYSIS LETTERS
·
2022
·Vol. 153
·期 11
·3371-3382
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IF 2.936
Kang Yuexin,Sun Shangde,Wang Ping
Monoricinolein (MRO) is a renewable and biodegradable surfactant derived from castor oil (CO). In this work, a novel ionic liquid (IL)-catalyzed method for selective MRO preparation by the glycerolysis of CO was investigated. Six basic ILs ([Bmim]Im, [Bmim]OH, [Bmim]DCN, [Bmim]OAc, [Emim]OAc, [Emim]Im) were screened and evaluated as homogeneous catalysts. Among the tested ILs, [Bmim]Im showed the best catalysis performance. An evaluation of the effects of reaction variables on the IL-catalyzed glycerolysis was carried out (temperature, reaction time, IL load and substrate ratio). The maximum MRO yield (75.77 ± 1.20%) and triacylglyceride (TAG) conversion (96.67 ± 0.10%) were obtained under the following optimized conditions: CO/glycerol molar ratio 1:6, IL load 10%, 180 °C, 3 h, and no water added. The results showed that the selectivity of MRO was enhanced. The activation energies (Ea) for CO conversion and formation of the MRO were 44.07 kJ/mol and 54.99 kJ/mol, respectively. Graphical Abstract
研究领域:
化学工程
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可再生资源
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绿色化学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）