FOOD CHEMISTRY
·
2019
·
IF 5.399
Ting Shi,MengTing Zhu,XingYu Zhou,Xi Huo,You Long,XiangZhong Zeng,Yi Chen
Proton nuclear magnetic resonance ( 1 H NMR) combined with partial least squares (PLS) was developed for the rapid determination of squalene and sterols (brassicasterol, campesterol, stigmasterol and β-sitosterol) in 119 vegetable oils from 7 different species. The 1 H NMR spectra of these oil samples were correlated to the reference value determined by gas chromatography-mass spectrometry (GC–MS) method by PLS regression, using outlier removal, selection of input X-variables and data pretreatments. Auto-scaling (UV) was chosen as the best pre-processing for the PLS models of stigmasterol, β-sitosterol, and squalene. Pareto variance (Par) was more suitable for the PLS model of brassicasterol. The model for squalene was further improved by a reduced number of variables with variable importance for the projection (VIP) scores technique. The study demonstrated the potential application of NMR coupled with PLS as a rapid and nondestructive technique for the routine analysis of squalene and sterols in 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
JOURNAL OF CHROMATOGRAPHY A
·
2018
·
IF 3.716
Huazi Wang,Xiaodong Huang,Heng Qian,Runhua Lu,Sanbing Zhang,Wenfeng Zhou,Haixiang Gao,Donghui Xu
In this study, four triazine herbicides—namely, simazine, ametryn, prometryn and terbuthylazine—were separated and determined using high-performance liquid chromatography coupled with ultraviolet detector (HPLC-UVD). The deep eutectic solvent (DES) formed by tetrabutylammonium chloride ([N 4444 ]Cl, TBA) and ethylene glycol (EG) was selected as the extraction solvent of vortex-assisted reversed-phase liquid-liquid microextraction (VA-RPLLME). The application of the hydrophilic DES expands the range of choice for LLME. The experimental parameters affecting the extraction recoveries, including the amount of the DES, the sample volume and the vortex time, were investigated and optimized by the design of experiments (DoE) methodology. A quadratic model, namely central composite face-centered (CCF) design featuring 20 runs was used instead of the conventional trial and error approach. Under optimum conditions, the limits of determination (LODs) of the method were 0.60–1.50 μg L −1 . The enrichment factors for the analytes ranged from 27 to 31. The extraction recoveries were in the range of 84.1–104.9%, and the intra-day, inter-day and intermediate relative standard deviations (RSDs) were less than 8.4%. Finally, the method was applied for the determination of triazine herbicides in vegetable oil samples. The obtained recoveries were in the range of 60.1–107.2% and RSDs were lower than 8.1%. In general, VA-RPLLME can be complementary to the present available methods for the determination of triazine herbicides in vegetable oil samples.
研究领域:
分析化学
·
环境科学
✓ 已验证
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2017
·
IF 4.529
Wenhua Ji,Mingming Zhang,Wenjuan Duan,Xiao Wang,Hengqiang Zhao,Lanping Guo
Phytic acid-stabilized Fe 3 O 4 -graphene oxide (GOPA@Fe 3 O 4 ) was assembled by microwave-enhanced hydrothermal synthesis and super-amphipathicity was demonstrated by measurement of dynamic oil and water contact angles. GOPA@Fe 3 O 4 was used as a sorbent for enrichment of eight polycyclic aromatic hydrocarbons (PAHs) from vegetable oils by magnetic solid-phase extraction (MSPE). The extraction-desorption factors were systematically investigated and, under optimum conditions, the super-amphiphilic sorbent achieved wide linear ranges (0.2–200 ng g −1 ), satisfactory precision (3.44–6.64% for intra-day and 5.39–8.41% for inter-day) and low limits of detection (LODs, 0.06–0.15 ng g −1 ) for PAHs. Excellent recoveries (85.6–102.3%) for spiked PAHs were obtained with genuine vegetable oil samples. These results indicate that MSPE using GOPA@Fe 3 O 4 as the sorbent, coupled with high performance liquid chromatography (HPLC), is an efficient and simple method for the detection of low concentrations of PAHs in vegetable oils.
研究领域:
分析化学
·
环境科学
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2025
·
IF 6.2
Xin-Ze Wu,Kai-Wen Tan,Xu Zhang,Jun-Jie Tan,Na An,Fang Cong,Wenbin Wu,Azamat Temerdashev,Quan-Fei Zhu,Hong Wang,Yu-Qi Feng
Fatty acid esters of hydroxy fatty acids (FAHFAs) are emerging bioactive lipids in edible oils, but their trace-level presence and matrix complexity hinder accurate analysis. Here, we designed a novel chemoselective probe piperazine-modified silica (SiO2-PP) that specifically captures FAHFAs while removing almost totally triglycerides in a one-step labeling reaction. The probe enabled single-batch sample pretreatment within 30 min, integrating capture, purification, and signal amplification. Coupled with liquid chromatography–mass spectrometry, the method achieved high sensitivity (LOD: 0.0039–0.033 ng/mL) and enabled quantification of 47 FAHFA isomers in 47 vegetable oil samples, with concentrations ranging from 0.56 to 1.76 × 104 ng/g. Five dominant isomers (e.g., 10-OAHSA) were identified, with olive and peanut oils exhibiting the highest FAHFA concentrations. This approach provides a promising platform for high-throughput functional lipid profiling, effectively overcoming the inefficiencies of traditional methods while significantly enhancing the assessment of vegetable oil quality.
研究领域:
分析化学
·
脂质组学
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食品科学
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生物活性脂质
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质谱分析
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产品关联
DOI
PubMed
高影响因子
Frontiers in Bioengineering and Biotechnology
·
2021
·
IF 5.89
Yu Juan,Xu Chaoqun,Lu Chuanwei,Liu Qian,Wang Jifu,Chu Fuxiang
Preparation and application of sustainable polymers derived from renewable resources are of great significance. The aim of this study is to synthesize a kind of sustainable polymeric micelles from rosin and vegetable oils via atom transfer radical polymerization (ATRP) and to investigate the doxorubicin delivery properties of these micelles. Dehydroabietic acid–based poly lauryl methacrylate (DA-PLMA) with narrow PDI of 1.13 was prepared in a well-controlled process using rosin as an ATRP initiator. Thereafter, carboxylic groups were introduced to form poly methacrylic acid (PMAA) moieties in DA-PLMA polymer via acid hydrolysis. The resulted DA-PLMA-PMAA could self-assemble in water to form pH-dependent polymeric micelles with a diameter of ∼65 nm and PDI as low as 0.105. Owing to the existence of rosin, DA-PLMA-PMAA micelles also showed self-fluorescence properties. In addition, Dox-loaded micelles were prepared in aqueous solution with the drug-loading capacity as high as 16.0% and showed sustained-release characteristics. These results demonstrate great promise for designing polymeric micellar from rosin and vegetable oils.
研究领域:
材料科学
·
生物医学工程
·
药剂学
✓ 已验证
DOI
高影响因子
FOOD CHEMISTRY
·
2021
·
IF 7.514
Hongwen Xu,Jiadi Sun,Haiming Wang,Yinzhi Zhang,Xiulan Sun
A new, green, and cost-effective magnetic solid-phase extraction of aflatoxins and ochratoxins from edible vegetable oils samples was developed using polydopamine-coated magnetic multi-walled carbon nanotubes (PDA@Fe 3 O 4 -MWCNTs) as the absorbent. PDA@Fe 3 O 4 -MWCNTs nanomaterials were prepared by chemical co-precipitation and in situ oxidation and self-polymerization of dopamine and was characterized. Factors affecting MSPE and the adsorption behavior of the adsorbent to mycotoxins were studied, and the optimal extraction conditions of MSPE and the complexity of the adsorption process were determined. Based on this, the magnetic solid-phase extraction-high-performance liquid chromatography-fluorescence detection method (MSPE-HPLC-FLD) was established for determining six mycotoxins [aflatoxin B 1 (AFB 1 ), AFB 2 , AFG 1 , and AFG 2 , and ochratoxin A (OTA) and OTB)] in vegetable oils. The recovery was 70.15%~89.25%, and RSD was ≤6.4%. PDA@Fe 3 O 4 -MWCNTs showed a high affinity toward aflatoxins and ochratoxins, allowing selective extraction and quantification of aflatoxins and ochratoxins from complex sample matrices.
研究领域:
食品安全
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分析化学
·
环境科学
✓ 已验证
DOI
高影响因子
EUROPEAN JOURNAL OF LIPID SCIENCE AND TECHNOLOGY
·
2024
·
IF 1.8
Yikang Zhang,Chenwei Zhao,Jun Jin,Qingzhe Jin,Xingguo Wang
In the present study, antioxidant impacts of L-ascorbyl palmitate (L-AP) on 14 kinds of typical vegetable oils were studied, whose ratios of C18:1 to C18:2 ranged from 0.15 to 9.57. Regression analyses between vegetable oils and their micronutrient-free counterparts revealed that the antioxidant capacity of L-AP was closely related to concentrations of α-, γ-, and δ-tocopherols instead of fatty acid compositions. Binary mixtures consisting of L-AP and α-, γ-, or δ-tocopherols exhibited desirable synergistic antioxidant effects in comparison with individual species. The optimal synergistic effects were found at ratios of L-AP to α-, γ-, δ-tocopherols, being 1:2–1:4. Further EPR spin trapping test figured out that the combined antioxidants reduced the total amount of spin adducts significantly during lipid oxidation, which were contributed by regenerating tocopherols from L-AP. The results will highlight the application of L-AP in protecting packed cooking oils after opening and during cooking. Practical applications : Vegetable oils packaged in 4–5 L bottles are one of the most important forms for home cooking. Although deoxygenation techniques are applied to increase their shelf life during storage, they will experience a more violent oxidation reaction after opening. The oils are typically oxidized to rancidity before ending up in consumption. L-AP was therefore involved into the vegetable oils to prevent them from oxidation during uses. The results of study can help companies to select the optimal L-AP addition amount according to different endogenous tocopherol types and contents in the target oil in order to extend the use life of the vegetable oil.
研究领域:
食品科学
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营养学
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生物化学
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Meng Wang,Xiaoqi Zhao,Xiaoyun Yang,Xueming He
The fluorescence characteristics of aflatoxin B 1 (AFB 1 ) have enabled the development of an effective and non-destructive screening method for AFB 1 in agro-products using fluorescence spectroscopy. However, the complex and varied matrices present in most foodstuffs can significantly distort the intrinsic fluorescence of AFB 1 . In this study, the absorption and scattering properties of vegetable oils were obtained using double integrating spheres (DIS), and fluorescence intensity was obtained using laser-induced fluorescence (LIF) technique. A six-parameter analytical model has been developed to recover AFB 1 intrinsic fluorescence based on the absorption and scattering features at excitation (375 nm) and emission (424 nm) wavelengths employing a one-dimensional convolutional neural network (1D-CNN). Prediction models for AFB 1 concentration in vegetable oils with gradient variations of matrices were calibrated using the disturbed and recovered intrinsic fluorescence intensity, respectively. The models were validated and compared to demonstrate the feasibility and superiority of the proposed method.
研究领域:
食品安全
·
光谱学
·
人工智能
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DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Run Liu,Yi Zhang,Yuanzhi Xu,Zhonghui Liu,Jinhang Chen,Kheng-Lim Goh,Yufei Zhang,Mingming Zheng
Diacylglycerol (DAG) is a functional lipid that is naturally present in vegetable oils in limited concentrations (1 %–5 %). This study proposed an enzymatic method to afford high-content-DAG vegetable oils via a reaction catalyzed by an immobilized lipase, PS@OMS-C 8 , using high-speed homogenization and molecular distillation. Results indicated that 48.6 % DAG was initially obtained through the enzymatic glycerolysis of rapeseed oil with glycerol, of which 90.2 % was sn -1,3-DAG. PS@OMS-C 8 maintained 35.5 % DAG content after 10 reuse cycles, confirming its catalytic stability; this was attributed to lipase immobilization on the ordered mesoporous silica that significantly improve the secondary protein structures, including α-helix and β-sheet, thereby strengthening the rigidity of PS@OMS-C 8 . In addition to producing DAG-enriched rapeseed oil, other edible oils with 39.4 %–50.2 % DAG content were obtained, as revealed via molecular docking simulation. This study offers new strategies for the sustainable synthesis of vegetable oils with a high content of functional lipids high-content functional lipids.
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
LWT-FOOD SCIENCE AND TECHNOLOGY
·
2023
·
IF 6
Xuan Liu,Weifei Wang,Long Xu,Zhong Li,Qingqing Xu,Bo Yang,Dongming Lan,Yonghua Wang
Phospholipids (PLs), as natural additives and nutritional supplements, are recovered from the gum phase during the degumming process of crude vegetable oils. The molecular species of phospholipids recovered from crude soybean (SO), flaxseed (FO) and peanut oil (PO) by different degumming processes, including water (WD), acid (AD), PLA 1 (EDA), PLC (EDC) and PLA 1 -PLC (EDAC) were investigated. According to the PLS-DA model, a total of 30, 38 and 21 characteristic markers were identified using UPLC-Q-TOF-MS in the phospholipids recovered from SO, FO and PO by different degumming processes, respectively. PC (18:2/18:2) and PE (18:2/18:2) were the main phospholipids for WD and AD, LPC (18:2) and LPE (18:2) were the main phospholipids for EDA and EDAC, and PI (16:0/18:2) and PI (16:0/18:1) were served as characteristic phospholipids for EDC. In addition, a lamellar liquid-crystalline phase was observed in the recovered phospholipids, which indicated that the microstructure of phospholipids recovered from crude vegetable oils were significantly influenced by different degumming processes. These differential molecular species of phospholipid products provide useful information to facilitate the potential utilization of phospholipid products as emulsifiers in food and as ingredients in the pharmaceutical industries.
研究领域:
食品科学
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生物化学
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产品关联
DOI
高影响因子
Journal of Renewable Materials
·
2020
·Vol. 8
·期 4
·417-429
·
IF 1.341
Gang Hongze,Zhang Qiqi,Wang Wei,Cai Bangxin,Liu Jinfeng,Yang Shizhong,Mu Bozhong
Waste cooking oils and non-edible vegetable oils are abundant and renewable resources for bio-based materials which have showed great potential applications in many industries. In this study, five fatty acids commonly found in non-edible vegetable oils, including palmitic acid, stearic
acid, linoleic acid, linolenic acid, ricinoleic acid, and their mixtures, were used to produce bio-based zwitterionic surfactants through a facile and high-yield chemical modification. These surfactants demonstrated excellent surface/interfacial properties with the minimum surface tensions
ranging from 28.4 mN/m to 32.8 mN/m in aqueous solutions. The interfacial tensions between crude oil and surfactant solutions were remarkably reduced to lower values ranging from 0.0028 mN/m to 0.1983 mN/m without the aid of extra alkali, which particularly implied a great potential application
in enhanced oil recovery. Meanwhile, these bio-based surfactants also showed good wetting properties (contact angles of ∼51° comparing with that of double distilled water, 92.04°) and appropriate predicted biodegradability (degradation order of "weeks" for bio-based surfactants
synthesized from saturated fatty acids, and "months" for those synthesized from unsaturated fatty acids). Bio-based surfactants synthesized from unsaturated fatty acids showed better interfacial properties in reducing interfacial tension between crude oil and formation water. The bio-based
surfactants presented in this study are alternative substitutes for traditional petroleum-based surfactants in various surfactant application fields.
研究领域:
化学工程
·
环境科学
·
石油工程
✓ 已验证
DOI
高影响因子
FOOD CHEMISTRY
·
2018
·
IF 4.946
Xiuzhen Qiu,Xian-Yan Xu,Yong Liang,Huishi Guo
A new route to synthesize a covalent interaction-based molecularly imprinted polymer (MIP) material for 3-chloro-1,2-propanediol (3-MCPD) inside the nanopores of anodic alumina oxide (AAO) is presented. A series of adsorption experiments showed MIP had good extraction capacity and selectivity for 3-MCPD. In order to evaluate the usability of the MIP nanotubes membrane, a method combining AAO@MIP membrane extraction with gas chromatography – mass spectrometry (GC–MS) detection was developed for determination of chloropropanols. The limits of detection for the proposed method were 0.072 and 0.13 µg·L −1 , respectively, for 3-MCPD and 1,3-DCP. The average recoveries of 3-MCPD and 1,3-DCP spiked oil samples at three concentrations (0.01, 0.05 and 0.1 mg·kg −1 ) were in the range of 75.6–101.0% with a RSD of 3.3–8.4%, indicating the method would be suitable for determination of chloropropanols in 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）