Food Analytical Methods
·
2021
·Vol. 14
·期 8
·1567-1576
·
IF 3.366
Liu Shanshan,Hu Huiyu,Yu Yanpeng,Zhao Jiahui,Liu Lichun,Zhao Shanshan,Xie Jianhua,Li Chang,Shen Mingyue
Vegetable oil is one of the principal sources of minor bioactive substances such as tocopherol, phytosterol, and squalene. In order to obtain the distribution of these substances in vegetable oil, this study developed and validated high performance liquid chromatography-tandem mass spectrometry (HPLC-MS) method for the simultaneous analysis of tocopherols (α-, β-, γ-, and δ-tocopherol), phytosterols (β-sitosterol, stigmasterol, brassicasterol, and campesterol), and squalene in vegetable oils. An automatic gel permeation chromatography (GPC) system was used to remove triglycerides from oils, avoiding the heat treatment of traditional saponification. Method validation revealed the accuracy and reliability of this method. The current approach achieved the successful separation of β- and γ-tocopherol, which solved the problem of coelution and inaccurate quantification for β- and γ-tocopherol in previous study. Additionally, this method was applied to detect tocopherols, phytosterols, and squalene in 9 categories of vegetable oils.
研究领域:
食品科学
·
分析化学
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产品关联
DOI
高影响因子
RSC Advances
·
2013
·Vol. 3
·期 38
·17485-17491
·
IF 2.562
Yu Qin,Ping Chen,Jinzhao Duan,Junxing Han,Hui Lou,Xiaoming Zheng,Haiping Hong
Carbon nanofiber-supported molybdenum carbide catalysts (Mo2C/CNF) with different loadings were prepared by the carbothermal hydrogen reduction method. Characterizations with Raman, XRD, N2-TGA, SEM, TEM and HAADF-STEM confirmed that Mo2C nanoparticles were successfully supported on the carbon nanofibers. The optimal reaction conditions with model compounds on Mo2C/CNF had a conversion of 98.03% and yield of 95.26%. It is interesting to note that a low evaporation rate positions the Mo2C nanoparticles on the outside of the CNF due to the capillary effect and the Mo2C nanoparticles on the outside of the CNFs showed high catalytic activity compared to ones on the inside of the CNFs. The Mo2C/CNF catalyst was recycled 5 times without any apparent loss of catalytic activity. Catalytic performances of Mo2C/CNF, Mo2C/AC (activated carbon) and Mo2C/CNT (multi-walled carbon nanotubes) were examined using methyl palmitate and maize oil. The results showed that molybdenum carbide could be a potential substitute for noble metals in transformation of vegetable oils.
研究领域:
材料科学
·
催化化学
·
能源化学
·
纳米技术
·
绿色化学
✓ 已验证
DOI
高影响因子
ACS Omega
·
2020
·
IF 2.87
Jian Li,Qing Wang,Junyu Tao,Beibei Yan,Guanyi Chen
Biomass tar is the bottleneck of biomass gasification, which not only is adverse to energy production but also brings severe environmental issues. A scrubber with vegetable oil is considered as a low-cost but efficient approach for tar removal, but the effects of oil’s properties on different tar absorptions were rarely reported. In this study, canola oil, palm oil, and pure oleic acid and linoleic acid, which are the main compounds of vegetable oils, were employed for absorptive removal of benzene, toluene, and phenol. The degree of unsaturation, average molecular weight, and average chain length of solvents were quantitatively characterized. A series of time and temperature-dependent absorption experiments were conducted, and the relationship between oils’ properties and absorption performances was built. Results showed that pure oleic acid had the biggest absorption capacity for benzene and toluene due to the mono-unsaturated structure. Increasing the average molecular weight and chain length also enhanced tar absorption. Moreover, Grey relative analysis was employed to investigate the influence of each factor on tar absorption. The average molecular weight exerted the most significant influence on tar absorption in the tested temperature range whose comprehensive relevance coefficients reached the highest at 0.9810, 0.7669, and 0.7739 for benzene, toluene, and phenol, respectively. This study puts more attention on the nature of vegetable oils, and we hope to provide useful information for modulating a better oil-based scrubber medium and further enhancing tar absorptive removal.
研究领域:
能源与环境科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2018
·
IF 3.849
Haiyan Liang,Yechang Feng,Jingyi Lu,Lingxiao Liu,Zhuohong Yang,Ying Luo,Yi Zhang,Chaoqun Zhang
In this study, a series of bio-based polyols were prepared from olive, castor, corn, canola, rice bran, grape seed and linseed oil by thiol-ene photo-click reaction. The relationship between carbon-carbon double bonds in the backbone of vegetable oil fatty acid chains and the functionalities of the polyols was elucidated. The advantage and disadvantage between thiol-ene photo-click reaction and traditional methods for vegetable oil based polyols are summarized and compared. These bio-based polyols were used to prepare cationic waterborne polyurethane dispersions. With the increase of the vegetable oil based polyols’ hydroxyl values, the tensile strength, Young’s modulus, T g , water contact angle of the waterborne polyurethane films increase from 1 to 11 MPa, 10 to 395 MPa, 23 to 50 °C and 38˚ to 46˚, respectively, but the elongation at break and thermal stability of them decrease. Thiol-ene photo-click reaction offers a bio-based platform to create a variety of waterborne polyurethanes that promises economic and environmental benefits.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
·
2018
·
IF 3.741
Yechang Feng,Yang Hu,Limin Man,Teng Yuan,Chaoqun Zhang,Zhuohong Yang
Shape memory polymers play an increasingly significant role in the fields of electronics, aerospace and medical science. However, the most of shape memory polymers are derived from petroleum resource nowadays. Herein, biobased thiol-epoxy shape memory network was obtained from gallic acid-based thiol and diglycidyl ether of bisphenol A (DGEBA). The resulting network shows good shape memory performance with the shape-fixity ratio of 98.7%, shape-recovery ratio of 97.7% and excellent cycle stability, which is comparable to the petroleum counterparts. Further, epoxidized vegetable oils were incorporated into the above thiol-epoxy network to investigate the effect of epoxidized vegetable oils on the properties of the resulting networks. After introducing the vegetable oils, shape-fixity ratios show irrelevance with the network structures and keep above 96%. Shape-recovery ratio declines with the increase of epoxidized linseed oil (ELO) contents, but when ELO content equals to 20 wt% of DGEBA, shape-recovery speed enhances compared to the network without epoxidized vegetable oils. This is the first attempt to fabricate the thiol-epoxy shape memory networks from renewable biomasses.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Foods
·
2026
·Vol. 15
·期 15
·2738
·
IF 6
Xuheng Nie,Shidong Lv,Xin Wang,Xuefeng Chen,Yunman Wen,Shuiyan Yang,Chao Liu
Soybean oil (SO) and rapeseed oil (RO) are important vegetable oils widely used in food and food preparation. However, the multi-omics profile changes in these edible oils remain unclear. This study investigated the effects of varieties and processing on oil compounds. In total, 1033 widely targeted metabolites, 349 lipid compounds, and 157 volatile organic metabolites were identified in the samples. Chemometric analysis revealed that the number of differential metabolites was 664, 857, 204, and 812 in SO1stgvs. RO1stg, SO3rdgvs. RO3rdg, SO3rdgvs. SO1stg, and RO3rdgvs. RO1stg, respectively. Notably, upregulated differential metabolites accounted for 92.73% of the total differential metabolites in the comparison of RO3rdgvs. RO1stg, and 79.41% in the comparison of SO3rdgvs. SO1stg. This study provides data support and a theoretical basis for constructing regulatory systems in the edible plant oil (EPO) and fat industry.
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2021
·
IF 5.645
Bin Liang,Jieyi Chen,Xiulan Guo,Zhuohong Yang,Teng Yuan
Bio-based coatings gradually become an ideal substitution for the non-renewable petroleum-based coatings due to the features of environmental friendliness and low cost, and the preparation of high-performance bio-based coatings via a facile method is highly desirable. Herein, bio-based organic-inorganic hybrid UV-curable coatings with self-cleaning property were prepared in a solvent-free one-pot method. In this coating system, synthesized epoxidized castor oil (ECO) was used as a coating precursor, glycidyl methacrylate (GMA) and 3-glycidoxypropyltrimethoxysilane (GPTMS) were used as reactive diluents, and triarylsulfonium salt (TAS) was used as an effective cationic photoinitiator. Besides, commercial epoxidized soybean oil (ESO) was employed as another coating precursor to compare with ECO. The chemical structure of the synthesized ECO was confirmed by 1 H NMR and FT-IR. The occurrence of double bond radical copolymerization, epoxy ring-opening copolymerization and trialkoxysilyl sol-gel reaction in the cured films was proved via ATR-FTIR. The properties of the films cured with different GPTMS contents were investigated. Dynamic mechanical analysis (DMA) results revealed that EC films showed better performance than ES films, and the addition of GPTMS reduced the glass transition temperature ( T g ) and crosslinking density ( ν e ) of the cured films. However, the addition of GPTMS increased the peak temperature ( T p ) and char yield ( W char ) of the cured films, indicative of the enhancement in thermal stability. SEM results indicated that the incorporation of GPTMS in the cured films facilitated the obtainment of a smooth surface. Furthermore, all of EC films were hydrophobic, and they also exhibited self-cleaning property. In addition, they showed excellent hardness and acid resistance. Therefore, this study provided a facile approach to preparing bio-based organic-inorganic hybrid UV-curable films with self-cleaning property, and the high performances of these cured films made them potential for practical applications.
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产品关联
DOI
高影响因子
Food Packaging and Shelf Life
·
2019
·
IF 3.63
Zongyao Huyan,Shaoxuan Ding,Xiaohui Mao,Caie Wu,Xiuzhu Yu
This study investigated differences in vegetable oil oxidation regarding three packaging materials: ceramic (C), glass (G), and metal (M). Hydroperoxides, volatiles, and fatty acid composition (FAC) were determined; the hydrophilicities of material surfaces were assessed by contact angle. Results showed that order of contact angles of deposited water drops on material surfaces was C>G>M. This also indicated their hydrophilic order. The highest hydroperoxide level was detected in M, followed by G and then C, while material types slightly changed the FAC during oil storage. C allowed oxidized oil to release the largest quantity of volatiles followed by G and then M, indicating that C was most prone to decomposing lipid hydroperoxides into secondary products. M further degraded oxidation products, since a higher percentage of later oxidation products were observed in M packaging. These results indicate that more hydrophilic packaging materials decreased hydroperoxide production but contributed to hydroperoxide decomposition, while M contributed to further degradation of both oil oxidation and their oxidation products.
研究领域:
食品科学
·
生物化学
✓ 已验证
产品关联
DOI
高影响因子
Food Science & Nutrition
·
2022
·Vol. 10
·期 9
·2935-2946
·
IF 3.553
Chunyong Song,Yufeng Lin,Pengzhi Hong,Huanming Liu,Chunxia Zhou
To enhance the quality and flavor of surimi-based products, we investigated the effects of vegetable oils (peanut, soybean, corn, coconut, olive, and safflower seed oils) on the texture, water-holding capacity (WHC), microstructure, and flavor of the Nemipterus virgatus surimi gel. The results showed that 6 kinds of vegetable oils could improve the whiteness and flavor of gels. However, peanut, olive, and coconut oils enriching oleic acid or lauric acid were easy to accumulate with an average diameter of more than 0.15 μm. Thus, the gel with the oil showed a loose network structures with large cavities, and the texture was deteriorated, accompanied by decreased WHC ( p < .05). Compared with other vegetable oils, soybean, corn and safflower seed oils enriching linoleic acid were emulsified with protein forming a stable interfacial protein film. The gel with the oil showed an increase in the WHC and bound water content. Furthermore, the oil droplets with an average diameter of less than 0.15 μm were evenly distributed in the gel matrix, and the gel exhibited dense network structures with small cavities and smooth surface. In general, soybean and safflower seed oils can be used as a potential additive to improve the quality and flavor of surimi-based products.
研究领域:
食品科学
·
生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF SEPARATION SCIENCE
·
2017
·Vol. 40
·期 15
·3130-3137
·
IF 2.557
Shuqiang Zhu,Lijun Wang,Along Su,Haixia Zhang
A novel method was developed for the determination of two endocrine-disrupting chemicals, bisphenol A and 4-nonylphenol, in vegetable oil by dispersive liquid–liquid microextraction followed by ultra high performance liquid chromatography with tandem mass spectrometry. Using a magnetic liquid as the microextraction solvent, several key parameters were optimized, including the type and volume of the magnetic liquid, extraction time, amount of dispersant, and the type of reverse extractant. The detection limits for bisphenol A and 4-nonylphenol were 0.1 and 0.06 μg/kg, respectively. The recoveries were 70.4–112.3%, and the relative standard deviations were less than 4.2%. The method is simple for the extraction of bisphenol A and 4-nonylphenol from vegetable oil and suitable for routine analysis.
研究领域:
分析化学
·
食品安全
·
环境污染物检测
·
内分泌干扰物
·
食品化学
✓ 已验证
DOI
高影响因子
Separation Science Plus
·
2024
·Vol. 7
·期 8
·e202400095
·
IF 1.3
Mengqi Shen,Qi Lian,Sicong You,Lu Zhou,Baocheng Xu,Hongwei Zhang,Muhammad Usman Amjad,Lili Liu
The purpose of this study was to investigate the effects of different chromatographic column absorbents (activated clay, silica gel, and activated aluminum oxide) on the adsorption and removal of minor components (sterols, tocopherols, β-carotene, free fatty acids (FFAs), secondary oxidation products, and peroxides) in vegetable oils. For single absorbents, activated aluminum oxide was the most effective material for removing tocopherols and FFAs from oil. All the adsorbents used have the capacity to remove β-carotene from edible oils, and activated clay has the strongest ability, with removal rates reaching 99.8%. The brassicasterol, campesterol, β-sitosterol, γ-tocopherol, and δ-tocopherol in vegetable oil can be completely removed by silica gel. Using a combination of these absorbents, a multistage optimized method was developed to maximize the removal of various minor components from vegetable oils. After multistage purification, free sterols, tocopherols, FFAs, β-carotene, and secondary oxidation products were completely removed, whereas peroxides were also removed at concentrations less than 0.71 mmol/kg. The purified oils could be used as standard samples for in-depth study of the effects of minor components on formation of association colloids and their influence on oil oxidation, as well as for evaluating the antioxidant potential of novel antioxidants or extracts.
研究领域:
食品科学
·
化学工程
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
Food Chemistry-X
·
2024
·
IF 6.5
Shaowei Li,Yuting Yuan,Liangxiao Zhang,Fei Ma,Peiwu Li
This study was based on QuEChERS cleanup coupled with UHPLC-MS/MS for the determination of γ-oryzanol compounds in vegetable oils. Several parameters of QuEChERS and UHPLC-MS/MS were studied for purification and detection of γ-oryzanol compounds in oil samples. Under the optimized conditions, the whole pretreatment procedure could be accomplished within 10 min without tedious procedure, larger volume of organic solvent and complicated apparatus. The limit of detections and the limit of quantifications for γ-oryzanol compounds were ranging from 0.1-0.3 µg kg −1 and 0.4–1.0 µg kg −1 , respectively. Satisfactory recoveries of all analyts were ranging from 72.2 % to 101.3 %, and the intra-day and inter-day precision were less than 10.6 %. The validation indicated that rice band oil and corn oil were rich in 24-mCAF, CAF, β-SIF, CMF and STF. The QuEChERS-UHPLC-MS/MS simultaneously quantified five γ-oryzanol compounds in lipid matrices and assessed the nutritional and functional substances of vegetable oils.
研究领域:
食品科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）