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广西红树植物银叶树不同部位提取物体外抗氧化性分析
作者: 张艳军1 a  彭重威1 b  钟秋平1 b  欧闰庄1 a  全小红1 a  
单位: (1 钦州学院 a 化学化工学院;b 化学海洋学院:广西 钦州 535000)  
关键词: 银叶树  抗氧化活性  自由基  还原能力  总黄酮  总酚  
分类号:R284
出版年,卷(期):页码:2013 ,44 ( 12 ): 页码:2066-2070
摘要:

【Objective】Antioxidant activities in different parts (leaves, branches and seeds) of Heritiera littoralis extracts were measured in order to provide references for exploring pharmaceutical value of Heritiera littoralis resources.【Method】L-ascorbic acid reagent was used as the positive control. Antioxidant activity was evaluated by testing the scavenging activity on DPPH· and hydroxyl free radical(·OH) and reducing power of the extracts in different parts. Besides, the total content of flavonoids and polyphenols in the extracts was analyzed. 【Result】The results showed that the Heritiera littoralis extracts of different parts had scavenging effect on DPPH· and OH free radicals. The scavenging effect was positively related to the concentration in a certain concentration range. The ability sequence of scavenging DPPH· and hydroxy radical was L-ascorbic acid>branch extracts>leaf extracts>seed extracts. Reducing power sequence of extracts was L-ascorbic acid>branch extracts>leaf extracts>seed extracts. The average content of total flavonoids in extracts from different parts was between 3.65% and 5.56% (branch extracts). The average content of total phenols from different parts extracts was between 18.83% and 23.27% (branch extracts). 【Conclusion】The extracts in different parts of Heritiera littoralis have antioxidant activity, which provides references for development and utilization of Heritiera littoralis.

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