银叶树果壳单宁提取及抗氧化性研究  

Study on extraction and antioxidation activity of tannin from Heritiera littoralis shell

作　　者：胡上英[1] 庞庭才[1] 黄海[1] 李小妮 HU Shang-ying;PANG Ting-cai;HUANG Hai;LI Xiao-ni(Qinzhou University,Qinzhou 535099,Guangxi,China)

机构地区：[1]钦州学院,广西钦州535099

出　　处：《粮食与油脂》2018年第10期93-96,共4页Cereals & Oils

基　　金：广西自然科学基金(2016GXNSFAA380067);广西高校北部湾特色海产品资源开发与高值化利用重点实验室(钦州学院)基金资助(2016ZB08)

摘　　要：采用正交试验对银叶树果壳中单宁的提取工艺进行优化,并研究银叶树果壳单宁对羟基自由基、超氧阴离子自由基和对DPPH自由基的清除作用。结果表明最佳提取工艺条件为丙酮浓度70%、料液比1∶100(g/mL)、温度40℃、时间30 min,单宁得率为7.32%。银叶树果壳单宁对羟基自由基、超氧阴离子自由基和DPPH自由基均有明显的清除作用,且清除率随单宁浓度的增加而增大。Orthogonal test was used to optimize the extraction process of tannin from Heritiera littoralis shell,scavenging effect of tannin from Heritiera littoralis shell on hydroxyl radical,superoxide radical and DPPH radical were studied as well.The optimum extraction conditions were as follows:acetone concentration 70%,solid-to-liquid ratio 1∶100(g/mL),temperature 40℃,extracting time 30 min.Under the conditions,the yield of tannin was 7.32%.Scavenging effects of tannin on hydroxyl radical,superoxide radical and DPPH radical were obvious,and the scavenging rate increased with the increasing tannin concentration.

关 键 词：银叶树果壳 单宁 抗氧化性 

分 类 号：TS201.2[轻工技术与工程—食品科学]