FOOD CHEMISTRY
·
2017
·
IF 4.529
Dan Xie,Jun Jin,Jiang Sun,Li Liang,Xiaosan Wang,Wei Zhang,Xingguo Wang,Qingzhe Jin
The effects of seven different extraction solvents (ethanol, isopropanol, acetone, ethyl acetate, isohexane, n-hexane, and subcritical butane) on the lipid yield and quality of the oil extracted from krill meal were investigated in this study. Phospholipids (PL), fatty acids (FA) composition and minor components including sterols, astaxanthin, vitamin A and tocopherols in the extracted krill oil were analyzed. The results indicated that ethanol and isopropanol led to comparatively higher lipid yields (16.33 and 14.52%, respectively) and PL contents (39.2 and 38.7%, respectively) but lower contents of the minor components than the other solvents. The krill oil extracted with acetone had the lowest PL content (20.63%) but contained more astaxanthin (206.74 mg/kg), vitamin A (27.84 mg/100 g), and sterols (39.00 mg/g). Moreover, high levels of n-3 FA were present in the extracts with high PL contents. Further analysis revealed that 23.65–28.10% of eicosapentaenoic acid (EPA) and 16.71–21.03% of docosahexaenoic acid (DHA) were present in the PL, while only 2.83–3.48% of EPA and 1.40–1.74% of DHA were detected in the triacylglycerols (TAG). In addition, subcritical butane proved to be an alternative to n-hexane and isohexane; krill oil extracted with these three solvents had similar qualities.
研究领域:
食品科学
·
生物化学
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DOI
PubMed
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2019
·
IF 2.298
Chong Yang,Zhijing Cai,Hong Chen,Yepeng Xiao,Hui Wang,Yiqiang Deng,Lihua Cheng
In the reported study, experimental liquid–liquid equilibrium (LLE) data for extracting isopropanol from cyclohexane utilizing 1,4-butanediol, 1,2-propanediol, dimethyl sulfoxide, and N,N-dimethylformamide as solvents were obtained at 303.2 K and atmospheric pressure. The separation factors derived from experimentally measured LLE data were computed to determine the extracting capability of the different solvents, and Othmer–Tobias, Hand, and Bachman equations were used to estimate the reliability and consistency of the LLE data. In addition, the nonrandom two-liquid (NRTL) thermodynamic model in Aspen Plus software was used to regress the LLE data, providing optimized binary interaction parameters. The regression results agreed well with the experimentally determined LLE values, indicating that the NRTL method was suitable to correlate the LLE data for the four ternary systems.
研究领域:
化学工程
·
热力学
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产品关联
DOI
高影响因子
CHEMICAL PAPERS
·
2022
·Vol. 76
·期 8
·4691-4704
·
IF 2.146
Hao Ruilin,Zhang Huimin,Feng Yan,Yang Dandan,Zhao Zhigang,Zhao Sanhu
By-products (silk, cob, and husk) from purple corn processing are rich in anthocyanins, which can be used as natural antioxidants. In this work, the polyphenol and anthocyanin content and the chemical composition of solvent extracts from silk, cob, and husk were examined separately. The total anthocyanin (TAC) and polyphenols (TPC) content of purple corn silk is higher than the cob and husk. Ethanol can significantly improve the TAC in various purple corn extracts. Anthocyanins were identified using high-performance liquid chromatography coupled with an electrospray ionization mass spectrometer (HPLC-ESI-MS), and their composition was quantified using a diode matrix detector (DAD) coupled HPLC. The results of the quantitative analysis demonstrated that cyanidin derivatives were the main components of purple corn extracts, regardless of the solvent used. The selection of solvent and acidifier had a significant effect on the composition of anthocyanins. Ethanol and water can promote the dissolution of cyanidin derivatives, while methanol provides a solid incentive to extract peonidin derivatives. Formic acid may favor the production of malonyl anthocyanin, whereas hydrochloric acid may favor the production of succinyl anthocyanin. The results of the correlation analysis showed that the TAC primarily determined the antioxidant capacity of the purple maize extract in different extracts. The predictive evaluation of the VIP analysis shows that the higher relative concentration of C3dM, C3M, Pg3dM, and Pg3M in the water extract may contribute to its higher antioxidant power.
研究领域:
食品科学
·
植物化学
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产品关联
DOI
高影响因子
JOURNAL OF FOOD PROCESSING AND PRESERVATION
·
2021
·Vol. 45
·期 9
·e15754
·
IF 2.19
Jia-Liang Wang,Zhuo-Liang Yu,Fa-Wen Yin,De-Yang Li,Hui-Lin Liu,Liang Song,Da-Yong Zhou
The effects of different extraction solvents on the extraction yield and chemical composition of oils from by-products of marine shrimp Penaeus vannamei ( Pv ) and freshwater shrimp Procambarus clarkia ( Pc ) were investigated. Our results indicated that the ethanol and n-hexane mixture (4:1, v/v) was suitable solvent for simultaneous extraction of phospholipid and nonpolar lipids. By contrast, the ethanol and n-hexane mixture (4:1, v/v) and single ethanol were suitable solvents for the extraction of polyunsaturated fatty acids-rich (36.10%–42.78% of total fatty acids for Pv and 23.57%–25.58% of total fatty acids for Pc ) and phosphatidylcholine-rich (66.22–67.09 mol% of total phospholipids for Pv and 55.01–58.68 mol% of total phospholipids for Pc ) oils, but acetone was suitable solvent for the extraction of astaxanthin-rich oil (436.19 μg/g oil for Pv and 799.27 μg/g oil for Pc ). The findings will provide relevant information that can be used to improve the production of nutritional oils from shrimp by-products. Practical applications This study provides a theoretical basis for creating proper extraction processing to recover nutritional oils from shrimp by-products. For example, the ethanol and n-hexane mixture (4:1, v/v) was a suitable solvent for simultaneous extraction of phospholipid and non-polar lipids. By contrast, both of the ethanol and n-hexane mixture (4:1, v/v) and single ethanol were suitable solvents for the extraction of polyunsaturated fatty acids (PUFA)-rich and phosphatidylcholine-rich oils, but acetone was a suitable solvent for the extraction of astaxanthin-rich oil. Therefore, the oils extracted from shrimp by-products are rich in phospholipid, PUFA, and astaxanthin, which may be used as new functional food ingredients.
研究领域:
食品科学
·
营养学
·
海洋生物学
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产品关联
DOI
高影响因子
Green Processing and Synthesis
·
2017
·Vol. 7
·期 3
·191-197
·
IF 0.782
Wenxiu Deng,Lujie Liu,Yanqing Peng
A new biocompatible amino-functionalized ionic liquid composed solely of biomaterials was synthesized from taurine and choline hydroxide, and its physical properties (density, viscosity, miscibility and thermal stability) were also determined. The classic base-promoted three-component cyclic condensation of aromatic aldehydes, malononitrile and dimedone was chosen as the test reaction to demonstrate the catalytic activity of choline taurinate ([Ch][Tau]). The catalyst could be recovered and reused several times with no significant loss of activity. As a basic ionic liquid, [Ch][Tau] can extract acidic compounds from immiscible solvents through acid-base interaction. The extraction process of fluorescent dye Rhodamine B was monitored using ultraviolet-visible (UV-Vis) spectroscopy, by which the percentage extraction rate was determined as 95%.
研究领域:
有机化学
·
生物化学
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DOI
高影响因子
INTERNATIONAL JOURNAL OF FOOD PROPERTIES
·
2018
·
IF 1.845
Han Peng,Zeyuan Deng,Xuan Chen,Yong Sun,Bing Zhang,Hongyan Li
Hovenia acerba Lindl. is a perennial tree of Rhamnaceae family. In the present study, four solvents (80% methanol, ethyl acetate, n-hexane, and water) were used to extract the compounds of Hovenia acerba Lindl. peduncles (HAP). The total contents of phenolics and tannins (TPC and TTC), as well as their antioxidant activities (DPPH, ABTS, and FRAP) of these four different extracts including 80% methanol extract (ME), ethyl acetate extract (EE), n-hexane extract (HE) and water extract (WE) were compared. The antioxidant activities of HAP showed positive correlations with TPC and TTC, indicating that phenolics maybe a major contributor to the antioxidant activities of HAP. The significant difference between antioxidant activities and TPC/TTC implied the respective contribution extent of phenolics for the antioxidant activities of four solvent extracts. Besides, a total of 117 compounds, including 7 oligosaccharides, 11 organic acids, 41 phenolics, 1 steroids, 25 terpenes, 11 fatty acids, 9 amino acids, and 12 other compounds were identified or tentatively characterized in HAP for the first time. Among them, 23 bioactive constituents, including 4 organic acids, 5 phenolic acids, and 14 flavonoids, were quantified. The comparison of characterization and quantitation of 4 extracts demonstrated that 80% methanol showed the widest range of selectivity for both HAP flavonoid aglycones and glycosides, while ethyl acetate preferred to extract the flavonoids aglycone from HAP. Secondly, water and 80% methanol were excellent solvents for the extraction of phenolic acids. And both ethyl acetate and 80% methanol perform well at the extraction of terpenes and steroids.
研究领域:
植物化学
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药理学
·
食品科学
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产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2021
·
IF 4.821
Qiong Guo,Lining Pan,Yaqiong Qin,Fuwei Xie,Xiaoyu Wang,Xiaodong Zhao,Li Chen,Bing Wang,Junlan Cai,Huimin Liu
Trace analysis of multi-targets in complex matrices such as cigarette smoke has always been a great challenge for analysts. In this paper, a high-throughput qualitative and quantitative method was developed and validated to determine 559 aroma compounds in mainstream smoke using gas chromatography-tandem mass spectrometry. Among four commonly used extraction solvents, dichloromethane showed obvious advantages in extracting the target aroma compounds with different polarity. An analyte protectant mixture consisting of 3-methoxy-1,2-propanediol, 1,2-octandiol, 1,2-nonanediol, and 1,2-tetradecanediol was first presented to compensate for the matrix effect, which was suitable for solvents of a wide polarity range such as hexane, dichloromethane, acetone, acetonitrile, and methanol. Moreover, the introduction of precolumn backflushing markedly improved the instrument robustness in analyzing complex cigarette smoke. The results showed that the system retained good stability after 30 days of injection. The proposed method performed well in terms of key validation parameters: accuracy (70.3–118.8% for 552 compounds), inter/intraday precision (0.1–10.7% and 0.2–18.2%), and sensitivity (limit of detection 0.12–102.54 ng/mL). Finally, this method was successfully applied to analyze 12 different commercial cigarette brands. The proposed method has good application prospects based on its robustness and may be used as a potential tool to transfer the cigarette design from an experience-dependent mode to a digital design mode. This method also shows potential in assaying aroma compounds in essentials, food or plant-based substrates.
研究领域:
分析化学
·
烟草科学
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DOI
高影响因子
JOURNAL OF SEPARATION SCIENCE
·
2018
·Vol. 42
·期 2
·491-500
·
IF 2.415
Pinxuan Huang,Qiutao Liu,Jiabo Wang,Zhijie Ma,Jinghua Lu,Weijun Kong
Rapid, economic, and highly effective determination of multiple mycotoxins in complex matrices has given huge challenges for the analytical method. In this study, an economic analytical strategy based on sensitive and rapid ultrafast liquid chromatography coupled to hybrid triple quadrupole/linear ion trap mass spectrometry technique was developed for the determination of seven mycotoxins of different chemical classes (aflatoxin B 1 , B 2 , G 1 , and G 2 , ochratoxin A, T-2 toxin, and HT-2 toxin) in Polygonum multiflorum . Target mycotoxins were completely extracted using a modified quick, easy, cheap effective, rugged, and safe method without additional clean-up steps. The types of extraction solvents and adsorbents for the extraction procedure were optimized to achieve high recoveries and reduce coextractives in the final extracts. Due to significant matrix effects for all analytes (≤68.9% and ≥110.0%), matrix-matched calibration curves were introduced for reliable quantification, exploring excellent linearity for the seven mycotoxins with coefficients of determination >0.9992. The method allowed high sensitivity with limit of detection in the range of 0.031–2.5 μg/kg and limit of quantitation in the range of 0.078–6.25 μg/kg, as well as satisfactory precision with relative standard deviations lower than 8%. Recovery rates were between 74.3 and 119.8% with relative standard deviations below 7.43%. The proposed method was successfully applied for 24 batches of P. multiflorum samples, and six samples were found to be positive with aflatoxin B 1 , B 2 , G 1 , or ochratoxin A. The method with significant advantages, including minimum analytical time, low time and solvent consumption, and high sensitivity, would be a preferred candidate for economic analysis of multiclass mycotoxins in complex matrices.
研究领域:
分析化学
·
食品科学
·
毒理学
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产品关联
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2014
·
IF 3.208
Lu Zhang,Zong-cai Tu,Tao Yuan,Hui Wang,Zhi-feng Fu,Qing-hui Wen,Xiao-qin Wang
Artemisia selengnesis Turcz (AST) is a commonly consumed medicinal and culinary herb in China. This study aimed to obtain the proper solvent for extracting bioactive compounds from AST guided by antioxidant activity, and characterize the major chemical components by HPLC–QTOF-MS/MS. The results showed that 50% ethanol extract of AST (FEE) exhibited the highest total phenolics (17.03 mg GAE/g DM) and total flavonoids content (11.11 mg RT/g DM), while water extract (WE) contained the richest polysaccharide (102.43 mg Glu/g DM). The best DPPH scavenging capacity (IC 50 = 0.74 mg DM/mL) and reducing power (IC 0.5 = 2.18 mg DM/mL) were observed in FEE followed by WE. Correlation analysis revealed that phenolics showed the highest correlation with DPPH scavenging ability ( r = 0.930) and reducing power ( r = 0.975). Ethanol at 50% can be an efficient solvent for extracting antioxidants from AST based on the study. Total 27 compounds including 11 organic acids (7 hydroxycinnamic acids), 1 amino acid and 15 fatty acids were identified or tentatively identified from FEE. Notably, unsaturated fatty acids with 18 carbons were identified in Artemisia genus for the first time. Quinic acid, 3-, 5-caffeoylquinic acid and 3,4-, 3,5-dicaffeoylquinic acid were identified as the major phenolic acids in AST extract, and they were identified in AST for the first time.
研究领域:
植物化学
·
药用植物学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF BIOSCIENCE AND BIOENGINEERING
·
2021
·
IF 2.894
Chan-Juan Li,Meng-Ru Xin,Zhong-Liang Sun
Microalgae are natural, green raw material and could be used for the development of edible oil for its abundant polyunsaturated fatty acids , with fast growth rate. The wet mud and dry powder of Scenedesmus dimorphus were applied to compare the extraction effects of different organic solvent systems in this study. The results displayed that, by using the ethanol/ n -hexane (3:2, v/v) mixed solvent, the oil extraction rate from wet algal mud was 68.31 %, with 71.65 % of neutral lipid , and 1.87 % of vitamin E ; the retention rates of protein, chlorophyll, and carbohydrates in the algal residue after oil extraction were 60.56 %, 53.27 %, and 80.20 %, respectively. Through the single solvent n -hexane, the oil extraction rate from dried algal powder was 71.52 %, with 75.86 % of neutral lipids, and 1.63 % of vitamin E. The retention rates of protein, chlorophyll, and carbohydrate were 55.92 %, 61.33 % and 78.35 %, respectively, suggesting the high rate of nutrient retention. In addition, the orthogonal experiments indicated that the compound of low concentration natural antioxidants with 0.010 % of tea polyphenols, 0.005 % of vitamin E, and 0.015 % of rosemary extract had the best effects on improvement of oxidative stability.
研究领域:
生物化工
·
食品科学
·
生物技术
✓ 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）