紫甘薯花色苷的组分及抗氧化活性研究(英文)

被引:36
作者
朱洪梅
赵猛
机构
[1] 山西师范大学工程学院
关键词
化学组分; 抗氧化性; 紫甘薯; 花色苷;
D O I
暂无
中图分类号
TQ911 [基础理论];
学科分类号
摘要
对紫甘薯花色苷的化学成分和抗氧化活性进行了研究。研究采用大孔树脂AB-8纯化紫甘薯花色苷,高效液相色谱-2极管阵列法(HPLC-DAD)分析表明,纯化后的提取物中共含有11种花色苷,其中主要成分为酰化的矢车菊素和芍药素。并测定了紫甘薯总花色苷在DPPH自由基清除体系、超氧阴离子体系、还原力和亚油酸体系的抗氧化活性。在质量浓度均为0.5g/L时,花色苷、L-AA和BHT的还原力分别为0.572、0.460和0.121,花色苷的清除DPPH自由基的半数抑制浓度(IC50)和清除超氧阴离子IC50分别为6.94和3.68mg/L,表明花色苷还原能力强,并能有效地清除DPPH自由基和超氧阴离子。此外,紫甘薯花色苷能较好地抑制脂质过氧化。
引用
收藏
页码:39 / 45
页数:7
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