茶叶科学2024，Vol.44Issue(3)：493-500,8.
表儿茶素的碳酰化改性及其紫外吸收和抗氧化活性
Carbonylation Modification of Epicatechin and Its Activities of UV Absorption and Antioxidant
摘要
Abstract
In order to enhance the UV absorption characteristic of epicatechin derivatives and improve their solubility in non-polar solvents such as oils and fats,2,2'-di(p-hydroxybenzocarbonyl)-epicatechin was synthesized from epicatechin and p-hydroxybenzoic acid using methane sulfonic acid as solvent and catalyst.The target products were separated by column chromatography,and the purity was verified by high performance liquid chromatography(HPLC),and the structure of the target products were verified by UV-vis,FT-IR,1H NMR,13C NMR,LC-MS spectroscopy.The UV absorption characteristic of 2,2'-di(p-hydroxybenzocarbonyl)-epicatechin and its ability to scavenge ABTS+·,DPPH·and O2-·were evaluated.The results show that the synthesized 2,2'-di(p-hydroxybenzocarbonyl)-epicatechin had similar UV absorption and comparable molar absorptivity to OMC,the commonly used UV absorber,and is expected to be an excellent UV absorber in the UVB band.2,2'-di(p-hydroxybenzocarbonyl)-epicatechin had good antioxidant activity in vitro,and its antioxidant capacity in vitro was higher than that of VC and slightly lower than that of epicatechin,which is expected to be used for cosmetic applications.关键词
表儿茶素/碳酰化/改性/紫外吸收/化妆品Key words
epicatechin/carbonylation/modification/UV absorption/cosmetic分类
农业科技引用本文复制引用
雷响,张闽峰,林辉,王丽丽,郑德勇..表儿茶素的碳酰化改性及其紫外吸收和抗氧化活性[J].茶叶科学,2024,44(3):493-500,8.基金项目
中央财政林业科技推广示范项目(闽[2019]TG17号)、福建省"2011协同创新中心"中国乌龙茶产业协同创新中心专项(闽教科[2015]75号) （闽[2019]TG17号）
