扬州大学学报（农业与生命科学版）2024，Vol.45Issue(2)：84-92,9.DOI:10.16872/j.cnki.1671-4652.2024.02.010
3种商品茶多酚的表征、抗氧化性及其抑菌效果比较研究
A comparative study on the characterizations,antioxidant properties and antibacterial effects of three commercial tea polyphenols
摘要
Abstract
Three commercial tea polyphenols(CTP)were used as research objects to characterize their catechin-based compound components and characterizations,and their antioxidant activities and antibacterial effects were further ex-plored.Liquid phase mass spectrometry's result indicated that,7 kinds of catechin-based compounds were detected in all three CTP,with the highest relative content of epigallocatechin gallate(EGCG)component being 40.12％,36.27％and 59.13％for CTP1-CTP3,respectively.SEM test found that,all three CTP exhibited block structures with different si-zes and sharp edges.Infrareds pectrum analysis showed that,the characteristic peaks of phenolic hydroxyl group occurred at the respective 1 342-1 312 and 1 141 cm-1 for all three CTP,and their peak intensity sequence followed CTP3＞CTP1＞CTP2.Half inhibition concentration of CTP3 to DPPH,·OH and ABTS free radical were lowest with 0.087 6,0.060 5 and 0.152 5 mg·mL-1,respectively.CTP3 possessed the best antibacterial effects on the Staphylococcus aureus and Salmo-nella with 23.24 and 11.43 mm of inhibitory zone diameter,respectively.This research results could provide a theoretical reference for CTP as antioxidants and antibacterial agents in the development and application of food processing.关键词
茶多酚/液相质谱/红外光谱/自由基清除/抑菌圈Key words
tea polyphenols/liquid phase mass spectrometry/infrared spectrum/free radical scavenging/inhibition zone分类
农业科技引用本文复制引用
刘雅楠,张迅,单洪雁,赵文鹏,李松南,王君..3种商品茶多酚的表征、抗氧化性及其抑菌效果比较研究[J].扬州大学学报（农业与生命科学版）,2024,45(2):84-92,9.基金项目
国家自然科学基金资助项目(82000791) （82000791）
江苏省自然科学基金资助项目(BK20220585) （BK20220585）
中国博士后自然科学基金面上项目(2022M712692) （2022M712692）
扬州市重点研发计划(社会发展)项目(YZ2022076) （社会发展）
扬州市"绿扬金凤计划"项目(YZLYJFJH2021YXBS172) （YZLYJFJH2021YXBS172）
扬州大学大学生科技创新基金项目(X20220894) （X20220894）
