食品科学2024，Vol.45Issue(18)：40-47,8.DOI:10.7506/spkx1002-6630-20240128-253
核壳磁性胡桃醌分子印迹聚合物对核桃青皮中目标分子的选择性富集
Selective Enrichment of Juglone in Walnut Green Peel Using Core-Shell Magnetic Molecularly Imprinted Polymer
摘要
Abstract
In this study,surface imprinting technology was used for the one-step preparation of a core-shell magnetic molecularly imprinted polymer(Fe3O4-NH2@MIP)with amino functionalized magnetic iron trioxide(Fe3O4-NH2)as the magnetic core at a mass ratio of juglone to functional monomer to cross-linking agent of 1:8:40.The structure,morphology and magnetic strength of the material were characterized by multiple techniques including scanning electron microscopy(SEM),transmission electron microscopy(TEM),and Fourier transform infrared spectroscopy(FTIR).The adsorption performance was studied through dynamic adsorption and isothermal adsorption experiments.Results showed that an imprinted layer with a thickness of about 75 nm was successfully polymerized on the surface of Fe3O4-NH2,with a nearly spherical shape and a regular crystal structure and a saturation magnetic strength of 48.50 emu/g.The layer could be quickly separated in five seconds.When the adsorption time was 100 minutes and the concentration of juglone was 100 μg/mL,good adsorption performance was obtained with an adsorption capacity of 32.89 μg/mg,the kinetic adsorption process was closer to a pseudo-second-order model,and the adsorption data accorded with the Langmuir isotherm,indicating that Fe3O4-NH2@MIP enables efficient separation and enrichment of juglone from walnut green peel extract.This study is of reference significance for the development of more biological activity of juglone and the expansion of its application in food,pharmaceutical and other industries.关键词
核桃青皮/胡桃醌/分子印迹聚合物/磁相应性/富集Key words
walnut green peel/juglone/molecularly imprinted polymer/magnetic responsibility/enrichment分类
轻工业引用本文复制引用
热萨莱提·伊敏,热阳古·阿布拉,买买提·吐尔逊..核壳磁性胡桃醌分子印迹聚合物对核桃青皮中目标分子的选择性富集[J].食品科学,2024,45(18):40-47,8.基金项目
新疆维吾尔自治区高校基本科研业务费科研项目(XJEDU2023P106) （XJEDU2023P106）
新疆维吾尔自治区天山创新团队计划项目(2023D14002) （2023D14002）
喀什地区科技计划项目(KS2022090) （KS2022090）
喀什大学重点课题项目(2022-2752) （2022-2752）
