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The current study develops an effective, convenient, low-cost, and environmentally friendly method for determining trans-resveratrol (TRA) in peanut oils, the unique proportion of peanut oil, by employing natural cotton fibers without any pretreatment as extraction sorbent and an in-syringe extraction device. The primary factors affecting the extraction recovery are optimized in detail. The condition of 200.0 mg of cotton fibers, six push-pull times, 2.0 mL of n-hexane as washing solvent and 2.0 mL of ethanol as desorption solvent is selected as the best. The linear range is demonstrated to be 10-1000 ng/g with a satisfactory correlation coefficient (R2 = 0.9995), while the limit of detection is calculated as 2.47 ng/g. In addition, the recoveries of TRA are obtained in the range of 93.8-104.4% with RSDs less than 5.5%. Finally, the developed method is successfully applied to determine TRA concentrations in commercial peanut oils and other edible oils. Copyright © 2020 Elsevier Ltd. All rights reserved.


Wen-Chao Han, Nian Shi, Xin-Ying Wang, Zi-Han Wang, Kai-Li Wang, Ming Gao, Lei Yu, Di Chen, Xia Xu. Application of natural cotton fibers as an extraction sorbent for the detection of trans-resveratrol in adulterated peanut oils. Food chemistry. 2021 Mar 01;339:127885

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PMID: 32866704

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