摘要
采用丙酮温浸法对尖果沙枣和大果沙枣果、叶中多酚物质进行提取并研究其抗氧化活性。通过测定不同材料多酚提取物对羟自由基(·OH)、超氧阴离子自由基(O2-·)以及2,2二苯代苦味肼基(DPPH·)的清除率,并利用硫代巴比妥酸法(TBA法)测定其对脂质过氧化的抑制作用。结果表明:八种实验材料中,尖果沙枣青果和嫩叶多酚提取物对·OH、O2-·、DPPH·均具有较好的清除作用,且清除率均高于50%,同时对脂质过氧化的抑制作用明显高于其余实验材料。尖果沙枣较大果沙枣具有更好的体外抗氧化活性。
The polyphenol in fruits and leaves from Elaeagnus oxcarpa and Elaeagnus moorcroftii was extracted by using acetone,and the antioxidant activities were studied. The scavenging capacities of polyphenol in different materials on hydroxyl free radical,superoxide anion radical and 2,2-diphenyl-1-picrylhydrazyl were assayed. Meanwhile,the inhibition effect of lipid peroxidation was studied with thiobarbituric acid（TBA）method. The results showed that the polyphenol in green fruit and tender leaf of Elaeagnus oxcarpa had better scavenging capacity on ·OH,O-2·and DPPH· during 8 kinds of material,moreover,the scavenging ratio was above 50%,respectively. And the inhibition effect of lipid peroxidation was higher than other material obviously. Elaeagnus oxcarpa had better antioxidant activities than Elaeagnus moorcroftii in vitro.
出处
《食品工业科技》
CAS
CSCD
北大核心
2011年第12期93-95,共3页
Science and Technology of Food Industry
基金
教育部"春晖计划"项目(Z2006-1-83003)
关键词
沙枣
多酚
自由基
抗氧化活性
TBA法
angustifolia
polyphenol
free radicals
antioxidant activity
thiobarbituric acid method
