Facile preparation of biomimetic mineralized COFs based on magnetic silk fibroin and its effective extraction of sulforaphane from cruciferous vegetables

文献类型： 外文期刊

第一作者： Liu, Guangyang

作者： Liu, Guangyang;Zhang, Xuan;Li, Lingyun;Chen, Ge;Lv, Jun;Xu, Xiaomin;Huang, Xiaodong;Xu, Donghui;Liu, Guangyang;Zhang, Xuan;Wang, Jian;Cao, Jiayong;Yin, Chen;Liu, Yuan;Zhang, Xuan;Xu, Donghui;Wang, Jing

作者机构：

关键词： Sulforaphane; Biomimetic mineralization; Silk fibroin; Covalent organic framework; Magnetic solid-phase extraction

期刊名称：FOOD CHEMISTRY （ 影响因子：8.8； 五年影响因子：8.6 ）

ISSN： 0308-8146

年卷期： 2024 年 434 卷

页码：

收录情况： SCI

摘要： A novel biomimetic mineralized covalent organic framework (BM-COF) was prepared based on magnetic silk fibroin and a new sulforaphane pretreatment technology was constructed. First, metal coordination was performed on the surface of silk fibroin, and nanoparticles were deposited by in-situ mineralization after coprecipitation. Then, biomineralized COFs were prepared by in-situ self-assembly of a COF layer on Fe3O4@silk fibroin surface guided by interfacial directional growth technology. The BM-COFs had a multilayer structure, large specific surface area and pore volume, and superparamagnetic properties, which make them an ideal adsorbent. The adsorption of sulforaphane by BM-COFs is mainly multi-molecular layer adsorption and chemisorption, there might be electrostatic action, pi-stacking and hydrogen bonding in the adsorption process. The composite material was successfully used for the pretreatment of sulforaphane in cruciferous vegetables. An extraction time of 30 min gave extraction efficiencies as high as 92%, and the recovery could reach more than 73%.

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