刺山柑多酚类物质含量及其抗氧化活性研究

采用Folin-Ciocalteu法,测定南疆地区刺山柑不同时期不同器官多酚类物质含量,并用DPPH法对其抗氧化活性进行比较研究。结果表明:(1)多酚类物质在不同时期刺山柑不同器官中均有分布,刺山柑不同器官中花蕾中多酚类物质含量最高,茎中多酚类物质含量最少;其中5～8月份花蕾中多酚类物质含量随月份的增加而减少,茎中多酚类物质含量随月份的增加而增加,其他器官中多酚类物质含量变化与花蕾基本相似。(2)不同时期刺山柑的不同器官均有清除DPPH自由基的能力,花蕾的抗氧化活性最强,且花蕾的抗氧化活性随月份的增加而减弱,茎的抗氧化活性最弱。

Variation of the Total Phenolics Content and Antioxidant Activity of Capparis spinosa

Using the assay systems of spectrophotometric method,we determined the variation of the total phenolics content and antioxidant activity in different organs of Capparis spinosa in different months which collected from the south part of Xinjiang.The results showed that:(1)Thephenolics distribute in every organs of C.spinosa in every months,in which the flowers ranged of the highest one in all organs,while the lowest was stem.In addition,dynamic changing of total phenolics content display that the highest level in flowers in May,as the time goes by the total phenolics content in flowers was reducing.It is similar tendencies of the total phenolics concentration changed in other organs except stem.(2)The different extracts all have antioxidant activity,the flowers extract shows the strongest and the stem extract shows the weakest.The antioxidant activity of the flowers extract is weaker with the time changing.