摘要
研究了盐碱地马齿苋四种不同提物的DPPH自由基、羟基自由基及超氧阴离子自由基清除活性和还原能力。结果表明:在不同的自由基体系中,4种提取物均对DPPH自由基和羟基离子有较好的清除效果,对超氧阴离子自由基的清除作用相对较弱。马齿苋的提取物中无水乙醇提取物和水提取物的抗氧化效果优于其余两种提取物,且与质量浓度呈明显的量效关系。
The DPPH radical scavenging capacity, hydroxyl radicar scavenging capacity, superoxide anion scavenging capacity and reducing power of the four different extracts from Portulaca oleracea L.grown in saline land were studied. The results showed that the DPPH radical scavenging activity and the hydroxyl radical scavenging capacity of four extracts from P, Oleracea grown in saline land were much higher than the superoxide anion scavenging capacity of those in the different radical systems. It demonstrated that the ethanol extract and water extract had a better antioxidant capacity than those from other two extracts. Moreover, the antioxidant capacity of the ethanol extract and water extract had a dose-effect relationship with the mass concentration.
出处
《食品工业科技》
CAS
CSCD
北大核心
2013年第7期49-51,55,共4页
Science and Technology of Food Industry
基金
国家高技术研究发展计划(2012AA021701)
江苏省自然科学基金青年基金项目(BK2012073)
江苏省教育厅高校自然科学研究指导项目(11KJD180002)
南京晓庄学院生物学重点学科建设项目
关键词
盐碱地马齿苋
自由基
抗氧化活性
Portulaca oleracea L.
free radicals
antioxidant activity
