INTERNATIONAL JOURNAL OF FOOD PROPERTIES
·
2021
·
IF 2.727
Lipeng Han,Jiahui Li,Shujie Wang,Weiwei Cheng,Lukai Ma,Guoqin Liu,Dongxue Han,Li Niu
Glycidyl ester (GE) has attracted worldwide attention due to its potential harm to human health. The GE in edible oil forms during the deodorization process of the oil refining, where antioxidants are used to inhibit its formation. To replace unsafe conventional synthetic antioxidants with natural antioxidants, sesame oil (SO) was used to inhibit the formation of GE in corn oil (CO), palm oil (PO), and rice bran oil (RO) during the deodorization process. The results showed that the content of GE in SO, CO, PO and RO followed the decreasing order of RO (1395.88 μg/kg) > PO (376.84 μg/kg) > CO (303.24 μg/kg) > SO (133.19 μg/kg). The concentration of diacylglycerol (DAG) in SO, CO, PO and RO followed the decreasing order of RO (11.64%) > PO (7.56%) > CO (4.11%) > SO (2.59%). The content of GE in oil could be affected by at least three factors: (i) unsaturated fatty acids could promote the formation of GE in oil; (ii) antioxidants in oil could inhibit the formation of GE by scavenging free radicals; and (iii) DAG, as a precursor, could lead to the formation of GE. This result suggested that SO could inhibit the formation of GE in CO, PO and RO. This indicated that when SO was added at 50%, its inhibitory effect was equivalent to that of tert-butylhydroquinone added at 0.02%.
研究领域:
食品科学
·
健康与医学
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DOI
高影响因子
FUEL PROCESSING TECHNOLOGY
·
2020
·
IF 4.982
Xin Jin,Xiaorong Li,Jiao Kong,Wei Xie,Meijun Wang,Jiancheng Wang,Weiren Bao,Liping Chang
The high yields of coke and tar pitch relating to volatile reactions can cause plug in the product lines during low temperature pyrolysis of low-rank coals. To study the potential transformation of volatile into coke during its migration in the pyrolysis process, six distillates and their blends from the same coal tar were heated at 400–600 °C. The composition , radicals of six distillates and coke structure were characterized by GC × GC–MS, ESR and Raman techniques, respectively. The results show that the coke yields increase with temperature during thermal reaction for all six distillates. When light oil and pitch are blended, the interaction between the two distillates compresses the transformation of volatile into coke above 500 °C. This can be ascribed to that the reactive hydrogen radicals generated from light oil may weaken the bonding between large molecules. By contrast, other distillates (phenolic oil, naphthalic oil, wash oil and anthracene oil) promote coke formation, resulting in higher coke yields than expected. It is also observed that the highest extent of interaction occurs between phenolic oil and pitch, which may be related to the high content of oxygen containing compounds in phenolic oil and the high electron density of the compounds in pitch.
研究领域:
化学工程
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能源科学
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产品关联
DOI
高影响因子
Food Biophysics
·
2018
·Vol. 13
·期 4
·362-373
·
IF 2.051
Yang Shu,Zhu Minpeng,Wang Na,Cui Xiaotong,Xu Qing,Saleh Ahmed S. M.,Duan Yumin,Xiao Zhigang
Oleogels were prepared from extra virgin olive oil, corn oil, sunflower oil, and flaxseed oil with a mixture of β-sitosterol and stearic acid (Sit1:SA4, w /w) at concentrations of 15 and 20 g/100 g oil. The prepared oleogels were characterized by different methods to study the influence of oil type on the oleogel properties. The oil type influenced the colour and appearance of the oleogel. The flaxseed oil based oleogel showed lower oil loss and higher firmness than those of other oils based oleogels. The increase of gelator mixture from 15 to 20 g/100 g oil reduced the oil loss and improved the firmness of oleogel samples. The microscopy and small-angle x-ray scattering analyses showed different microstructures and crystallographic reflections for oleogels prepared from different oil types. Also, the oil type and concentration of gelator mixture influenced the melting and crystallization enthalpies of oleogel. Furthermore, different oils based oleogels showed varying values of viscosity, storage modulus (G’), and loss modulus (G”). Therefore, it can be concluded that the oil type and concentration of gelator influence the functional properties of oleogel and the flaxseed oil resulted in oleogel with good properties compared with other oils used in the study.
研究领域:
食品科学
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化学工程
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产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2021
·
IF 8.742
Jingwei Lu,Fangchao Li,Gan Miao,Xiao Miao,Guina Ren,Bo Wang,Yuanming Song,Xiangming Li,Xiaotao Zhu
Traditional membrane-based separation methods are limited by the inability of a single membrane to separate both oil/water and oil/oil mixtures. Herein, to address this challenge, we have produced a superhydrophilic/superoleophobic shell powder coating that can be used as an advanced separation membrane for separating oil/water mixtures, emulsions, and oil/oil mixtures, when coated on a copper mesh and fabric. Utilizing its water-affinity and oil-repellency, the separation membrane can separate oil/water mixtures and emulsions with high separation efficiency. Interestingly, our separation membrane displays opposite wetting behavior between high-polar oils and low-polar oils, and utilizing this selective wetting to oils with different polarity, oil/oil mixtures separation is achieved effectively, even if the surface tension difference between two oils is as small as 2.4 mN/m. Using an ethanol-prewetting strategy, on-demand oil/water and oil/oil separation are also achieved on this separation membrane. This study is expected to present a promising approach to membrane-based separation technologies.
研究领域:
材料科学
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环境工程
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DOI
高影响因子
Processes
·
2025
·Vol. 13
·期 2
·457
·
IF 2.8
Li Wang,Hong He,Hua Wu,Zhi Luo,Zhongchen Gao,Jun Peng,Haixia Yin,Hao Lei
Water flooding is one of the most widely used secondary oil recovery methods for enhanced oil recovery (EOR). However, as a reservoir matures, excessive water production often accompanies oil production. To address this issue, the injection–production coupling technique (IPCT) has been proposed to control water production and improve oil recovery. Despite its practical application, the underlying mechanisms governing the injection–production process remain unclear. To investigate this, a transparent heterogeneous sand pack model and a visualization micro-model were employed to examine the impact of the injection–production mode on oil recovery and to uncover the mechanisms of enhanced oil recovery. The results indicate that, compared to the conventional continuous injection–production mode, both the fluid flow swept area and incremental oil recovery are significantly higher in the IPCT. Sweep efficiency improves by adjusting the injection–production streamlines and displacement directions. Notably, the oil displacement effect in the “stop injection” mode is more effective than in the “reduce injection” mode. These findings suggest that the coupling injection–production mode can efficiently recover residual oil in low permeability zones, thereby enhancing overall oil recovery.
研究领域:
石油工程
·
流体力学
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产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2023
·
IF 8.8
Jing-Jing Zhang,Yan Gao,Mei-Ling Zhao,Xiao Xu,Bo-Nan Xi,Li-Ke Lin,Jing-Yi Zheng,Bang Chen,Yu Shu,Cong Li,Yehua Shen
Authentication of walnut oil (WO) is challenging due to the adulteration of high-linoleic acid vegetable oils (HLOs) with similar fatty acid composition. To allow the discrimination of WO adulteration, a rapid, sensitive and stable scanning method based on supercritical fluid chromatography quadrupole time-of-flight mass spectrometry (SFC-QTOF-MS) was established to profile 59 potential triacylglycerol (TAGs) in HLOs samples within 10 min. Limit of quantitation of the proposed method is 0.002 µg mL −1 and the relative standard deviations range from 0.7% to 12.0%. TAGs profiles of WO samples from various varieties, geography origins, ripeness, and processing methods were used to construct orthogonal partial least squares-discriminant analysis (OPLS-DA) and OPLS models that were highly accurate in both qualitative and quantitative prediction at adulteration levels as low as 5% (w/w). This study advances the TAGs analysis to characterize vegetable oils and holds promise as an efficient method for oil authentication.
研究领域:
食品科学
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分析化学
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产品关联
DOI
PubMed
高影响因子
Scientific Reports
·
2024
·Vol. 14
·期 1
·1-14
·
IF 3.8
Liu Chao,Jia Xinlei,Wang Yonghui,Gu Yuxin,Liu Yanjuan,Wei Lixin,Xu Lanjuan
This paper aims to address the issue of environmental pollution resulting from marine oil spills by evaluating the oil adsorption performance of commonly used fence materials. Conventional oil adsorption materials exhibit limited rates and capacities for oil adsorption. Existing methods have proven insufficient in meeting the requirements for efficient and rapid oil–water separation. A new oil-absorbing barrier was developed by utilizing high oil adsorption resin as the primary material and hydroxypropyl methyl cellulose (HPMC) as the binder, leveraging the exceptional oil adsorption and hydrophobic properties of P(BMA-SMA-St)/MIL-101(Fe) resin. The oil-absorbing fence was characterized using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA). The oil adsorption rates of carbon tetrachloride, toluene, diesel and gasoline by the oil adsorption fence with 25 g/L resin content were 101.26 g/m 2 , 68.12 g/m 2 , 35.19 g/m 2 , and 46.69 g/m 2 , respectively. After 120 h of UV irradiation, the coating’s oil absorption capacity remained nearly unchanged, and it demonstrated outstanding mechanical, chemical, and wear resistance. As a result, the oil adsorption fence possesses the capability to rapidly absorb oil from the water’s surface during the process of containing oil pollution, leading to positive social and economic impacts.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY
·
2020
·Vol. 97
·期 6
·603-614
·
IF 1.659
Jia Luo,Zeping Wang,Shangzhi Deng,Fan Zhang,Guirong Bao,Junni Mao,Wenjing Yang
Direct glycerolysis of novel edible Sacha Inchi ( Plukenetia volubilis L.) seed oil (PvLO) into diacylglycerols (DAG) and monoacylglycerols (MAG) was studied over solid Na 2 SiO 3 with or without microwave assistance. The glycerolysis yield was calculated by qualitative and semiquantitative analyses of 1 H NMR, 13 C NMR, and FT-IR spectra. The yields of ~33% 1, 3-DAG, ~16% 1, 2-DAG, ~40% 1-MAG, and ~2.3% 2-MAG were achieved after 16 hours at 120 °C in three consecutive cycles using acetone, with an interesterification rate of 92%. The modified oil showed enhanced gelation ability at low temperatures. The yield of 1, 2-DAG can be increased by adding acetone as solvent. The fatty acid compositions and unsaturated structure of lipids were less destroyed after alkaline glycerolysis. However, more α-linolenic and linoleic acids were transferred to the sn -2 position of glyceryl skeleton. The oxidative stability of the modified oil was still controllable. In summary, this work provides a feasible method to convert polyunsaturated plant oils into oils rich in DAG and MAG with less destructive impact on the olefinic structure of oil. Also, it provides a useful example of how to quickly evaluate the influence of chemical modification on the chemical structure of plant oils by using various spectral technologies.
研究领域:
食品科学
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化学工程
·
植物油脂加工
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产品关联
DOI
高影响因子
LANGMUIR
·
2022
·
IF 4.331
Lan Ma,Yan Wan,Teng Wang,Yaling Liu,Ying Yin,Liyun Zhang
Developing the high-anti-fouling membrane has kept continuous attention in oil/water emulsion treatment. However, the majority of works on anti-fouling membranes mainly focused on low-viscosity oils, which greatly limited the development and application of a membrane to face the real crude oil wastewater. Inspired by the hydrophilicity of sodium carboxymethyl cellulose (CMC) and zirconium base metal–organic frame (Zr-MOF), an anti-oil-fouling CMC/UiO-66-NH2 composite membrane was constructed by a self-assembly method. Profiting from the hydrophilicity and micro-nanostructure of the CMC/UiO-66-NH2 layer, the obtained CMC/UiO-66-NH2 membranes displayed underwater superoleophobicity and desired oil resistance. It could display the effective separation capability with 1282 ± 62 to 6160 ± 81 L/(m2·h·bar) and above 99.08% toward the different light oil emulsions. More importantly, the CMC/UiO-66-NH2 membrane displayed ultralow crude oil adhesion behaviors toward the crude oil emulsions, which could achieve a considerably high flux (746 ± 60 to 5224 ± 87 L/(m2·h·bar)). Furthermore, electrostatic interaction and physical enwinding–wrapping between CMC and UiO-66-NH2 also endowed the composite membranes with outstanding stability. After immersing the as-prepared membranes into the harsh environments for 24 h, the membranes still maintained high underwater–oil contact angles (UWOCA > 155°) and separation ability (oil rejection was above 99.0%). Therefore, CMC/UiO-66-NH2 composite membranes could demonstrate promising prospects in real oily emulsion treatment.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Foods
·
2023
·Vol. 12
·期 2
·374
·
IF 5.2
Shengyue Zhong,Bin Huang,Teng Wei,Zeyuan Deng,Jing Li,Qiang Wen
Red-flowered oil-tea camellia (ROC) is an important woody oil species growing in the south, and its oil has high nutritional value. There are four main species ofROCin China, namely,Camellia chekiangoleosa(CCH),Camellia polyodonta(CPO),Camellia semiserrata(CSE) andCamellia reticulata(CRE). Reports on the comprehensive comparative analysis ofROCare limited. This study investigated the fruit characteristics and nutritional components of fourROCfruits, and the results showed thatROChad high oil content with levels of 39.13%–58.84%, especially theCCHfruit, which reached 53.6–58.84%. The contents of lipid concomitants ofROCoil were also substantial, including β-amyrin (0.87 mg/g–1.41 mg/g), squalene (0.43 mg/g–0.69 mg/g), β-sitosterin (0.47 mg/g–0.63 mg/g) and α-tocopherol (177.52 μg/g–352.27 μg/g). Moreover, the transverse diameter(TD)/longitudinal diameter (LD) of fruits showed a significant positive correlation with the oil content, andROCfruits with thinner peels seemed to have better oil quality, which is similar to the result of the oil quality evaluation obtained by the gray correlation coefficient evaluation method. FourROCoils were evaluated using the gray correlation coefficient method based on 11 indicators related to the nutritional value ofROC.CCHoil had the highest score of 0.8365, and YS-2 (a clone ofCCH) was further evaluated as the bestCCHoil. Finally, the results of heatmap analysis showed that triglycerides could be used as a characteristic substance to distinguishCCHoil from the other threeROCoils. The PLSDA (Partial least squares regression analysis) model and VIP (Variable important in projection) values further showed that P/S/O, P/O/O, P/L/L, P/L/Ln, S/S/O, S/O/O and P/S/S (these all represent abbreviations for fatty acids) could be used as characteristic differential triglycerides among the fourROCoils. This study provides a convenient way for planters to assess the nutritional quality of seed oil depending on fruit morphology and a potential way to distinguish between variousROCoils.Keywords:red-flowered oil-tea camellia;Camellia chekiangoleosaoil;correlation analysis;gray correlation coefficient;triglycerides
研究领域:
植物学
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营养学
·
化学分析
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
·
2022
·Vol. 103
·期 1
·108-117
·
IF 4.125
Chuanqing Huang,Zepeng Lin,Yunlong Zhang,Zeyu Liu,Xiaoyue Tang,Changzhu Li,Lin Lin,Wenqian Huang,Yong Ye
Background Diacylglycerol (DAG)-enriched oil has been attracting attention because of its nutritional benefits and biological functions, although the composition of its various free fatty acids (FFAs) and an unclear relationship between substrate and yield make it difficult to be identified and qualified with respect to its production. In the present study, linoleic acid-enriched diacylglycerol (LA-DAG) was synthesized and enriched from Camellia oil by the esterification process using the combi-lipase Lipozyme TL IM/RM IM system. Results The relationship between FFA composition and DAG species productivity was revealed. The results showed that heterogeneous FFA with a major constituent (more than 50%) exhibited higher DAG productivity and inhibited triacylglycerol productivity compared to homogeneous constituents. Joint characterization by high-performance liquid chromatography-evaporative light scattering detection, gas chromatography-mass spectrometry and ultra-performance liquid chromatography-heated electrospray ionization-tandem mass spectrometry identified that DAG components contained dilinoleic acid acyl glyceride, linoleyl-oleyl glyceride and dioleic acid acyl glyceride in esterification products. Under the optimum conditions, 60.4% 1,3-DAG and 61.3% LA-DAG in the crude product at 1 h reaction were obtained, and further purified to 81.7% LA-DAG and 94.7% DAG via silica column chromatography. Conclusion The present study provides a guideline for the identification of DAG species, as well as a structure-guided preparation method of DAG-enriched oils via the cost-effective combi-lipase. © 2022 Society of Chemical Industry.
研究领域:
食品科学
·
生物化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY
·
2024
·
IF 1.9
Haotian Fei,Congwen Zheng,Zhenyu Wu,Xiaojiang Liang,Yong Nie
Biodiesel is an important alternative renewable liquid fuel due to its eco-friendly, non-toxic, and lower emissions. In this work, glycerol esterification catalyzed by zinc glycerolate was employed as a pretreatment to prepare biodiesel from acidified palm oil. The effects of stirring rate, catalyst amount, glycerol to free fatty acids (FFAs) molar ratio, and reaction temperature on the conversion of FFAs and concentration of monoglycerides, diglycerides, and triglycerides were investigated and optimized. The results show that the conversion of FFAs could reach 99.16% under the optimized conditions. Moreover, the kinetics of glycerol esterification catalyzed by zinc glycerolate at 160–200°C was obtained. Additionally, a comprehensive evaluation of the new biodiesel production process was also conducted. As a result, higher biodiesel content in the crude biodiesel phase was obtained after transesterification and separation using this new process. Overall, the study contributes to the utilization of waste oils to produce renewable energy and to minimize the waste management problem. Graphical Process design for biodiesel production from acidified palm oil via glycerol esterification catalyzed by zinc glycerolate as a pretreatment method.
研究领域:
生物化学
·
可再生能源
·
催化化学
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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）