鲜食葡萄组织多酚抗氧化性的比较  

Comparative study on antioxidant activity of polyphenols in different grape tissues

作　　者：朱秀栋 张乐宏 王祎萍 葛琳 李岩[1] ZHU Xiudong;ZHANG Lehong;WANG Yiping;Ge Lin;LI Yan(College of Food Science and engineering, Qingdao Agricultural University,Qingdao 266109,China)

机构地区：[1]青岛农业大学食品科学与工程学院

出　　处：《中外葡萄与葡萄酒》2019年第3期15-18,24,共5页Sino-Overseas Grapevine & Wine

基　　金：青岛农业大学国家级大学生创新创业训练计划项目(201710435065);青岛农业大学高层次人才科研基金项目(663-1118006)

摘　　要：本研究对‘红地球’‘瑰香怡’‘巨峰’‘醉金香’4个葡萄品种葡萄的果皮、种子、果梗中的多酚含量进行测定,比较乙醇和石油醚提取物对DPPH·自由基、羟自由基(·OH)、超氧阴离子(·O2-)自由基的清除率。结果发现,葡萄组织的多酚含量与葡萄种类有关,不同品种的葡萄籽中多酚含量相比于果皮、果梗多酚含量高。果皮、籽多酚含量最高的品种为‘瑰香怡’,果梗多酚含量较高的品种为‘瑰香怡’与‘巨峰’,4个品种酚类物质含量与对DPPH·自由基、羟自由基(·OH)、超氧阴离子(·O2-)自由基清除效果呈正相关性,其中葡萄籽多酚对上述自由基的清除作用显著,最高可达98%。The content of polyphenols in berry skins, seeds and stalks of four grape varieties (‘Red Globe'‘Guixiangyi'‘Kyoho'‘Zuijinxiang') were determined. The removal rates of DPPH· free radicals, hydroxyl free radicals and superoxide anion free radicals were compared. It was found that the polyphenols content of grape tissues was related to different varieties. The content of polyphenols in grape seeds of different varieties was higher than that of grape skins and grape stalks. The polyphenol content of the ‘Guixiangyi' grape in the grape skins and grape seeds was the highest. Grapes with higher polyphenols were ‘Guixiangyi' and ‘Kyoho' in the grape stalks. The content of polyphenols was positively correlated with the scavenging effect of DPPH· free radical, hydroxyl free radical and superoxide anion free radical. The effect of grape seed polyphenols on the scavenging of above free radicals was significant, up to 98%, compared to skins and stalks.

关 键 词：红地球 瑰香怡 巨峰 醉金香 葡萄组织 多酚 抗氧化 

分 类 号：S663.1[农业科学—果树学]