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Yang, Cheng; Mo, Zheng-Lian; Zhang, Qiu-Fang; Xu, Jin-Jie; Shen, Xiao-Fang; Pang, Yue-Hong
Food chemistry, 04/2024, Letnik: 438Journal Article
The presence of estrogens residues in dairy products is a growing concern due to their potential health risk. Herein, in this study, we have developed a membrane-protected magnetic solid-phase extraction (MP-MSPE) method that utilized a magnetic adsorbent (Fe O @COF-LZU1) with in-situ growth for the efficient extraction of estrone (E1), 17β-estradiol (E2), and estriol (E3). When combined with HPLC-FLD, this method allows for the efficient detection of estrogens in dairy products. The stability of the MP-MSPE was improved by the presence of a dialysis membrane, which remained a high extraction efficiency (90 %) even after ten reuse cycles. The hydrogen bonding, π-π interactions and pore size effect contribute to the excellent adsorption of three estrogens onto Fe O @COF-LZU1. Under optimal conditions, the method exhibits a low detection limit (0.01-0.15 μg L ), wide linear range (0.1-800 μg L ), and favorable recoveries (77.3 %-109.4 %) at three concentration levels (10, 50 and 100 μg L ). This proposed method is characterized by its simplicity, high efficiency and eco-friendliness, making it a promising approach for extracting estrogens from dairy products.
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