天然产物研究与开发 ›› 2014, Vol. 26 ›› Issue (2): 248-251.

• 开发研究 • 上一篇    下一篇

决明子生品及炮制品的抗氧化活性研究

孔祥密,王培卿,康文艺*   

  1. 河南大学中药研究所,开封 475004
  • 出版日期:2014-02-28 发布日期:2014-12-12

Antioxidant Activity of Raw and Processed Cassia obtusifolia L.

KONG Xiang-mi, WANG Pei-qing, KANG Wen-yi*   

  1. Institute of Chinese Materia Medica,Henan University,Kaifeng 475004,China
  • Online:2014-02-28 Published:2014-12-12

摘要: 采用清除二苯代苦味肼基(DPPH)自由基、清除[2,2′-连氨-(3-乙基苯并噻唑啉-6-磺酸)二氨盐](ABTS)自由基及铁离子还原/抗氧化能力(FRAP)测定法,以二丁基羟基甲苯(BHT)为阳性对照,对决明子生品及炮制品进行抗氧化活性评价。实验结果表明,决明子生品及炮制品均有一定的抗氧化活性。酒蒸决明子乙酸乙酯部位清除DPPH自由基的能力(IC50值为93.8 μg/mL)较其它提取部位强;酒炙决明子乙酸乙酯部位清除ABTS自由基(IC50值为8.1 μg/mL)和还原Fe3+的能力(TEAC=319.22 μmol/g)最强。不同炮制方法对决明子抗氧化活性具有不同程度的影响。

关键词: 决明子, 抗氧化活性, DPPH, ABTS, FRAP

Abstract: In this study,1-diphenyl-2-picrylhydrazyl(DPPH) radical scavenging,[2,2′-azino-bis(3-ethylbenzothiazoline)-6-sulphonic acid] diamonium salt(ABTS) radical scavenging and ferric reducing antioxidant power(FRAP) assay were used to evaluated the antioxidant activities of the extracts of raw Cassia obtusifolia L.and its different processed products with BHT as positive control.The results showed that the extracts of C.obtusifolia and its different processed products all showed antioxidant activity. The ethyl acetate extract of wine steamed C.obtusifolia showed higher radical scavenging power on DPPH radical(IC50=93.8 μg/mL) than other extracts.The ethyl acetate extract of wine fried C. obtusifolia exhibited the highest radical scavenging power on ABTS radical(IC50=8.1 μg/mL) and ferric reducing antioxidant power(TEAC=319.22 μmol/g).The experimental results indicated that different processing methods of C.obtusifolia affected the antioxidant activity in various degrees.

Key words: Cassia obtusifolia L., antioxidant activity, DPPH, ABTS, FRAP

中图分类号: 

R282