Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Progress In Biochemistry and Biophysics》 2000-06
Add to Favorite Get Latest Update

Detection of Antioxidative Capacity in Plants by Scavenging Organic Free Radical DPPH.

PENG Chang Lian, CHEN Shao Wei, LIN Zhi Fang, LIN Gui Zhu(South China Institute of Botany,The Chinese Academy of Sciences, Guangzhou 510650,China).  
A very significant linear relationship was found between the capacity of scavenging DPPH free radical and concentrations of six antioxidants ( r =0 898~0 994)determined by spectrophotometry.There was an obvious difference in the capacity of scavenging DPPH free radical among different antioxidants. Both scavenging DPPH and inhibiting the oxidation of adrenalin were closely related with the concentration of ascorbic acid. The change of DPPH levels is more sensitive than that of adrenalin in the presence of ascorbate. The antioxidative ability in leaves extracts of two woody plants grown under different light intensities was measured by either scavenging DPPH or inhibiting the oxidation of linoleic acid. The same conclusion was drawn through these two assays. It is suggested that scavenging DPPH free radical is a rapid,simple,sensitive and practical assay for the evaluation of antioxidative capacity in plants.
【Fund】: 中国科学院广州分院;; 及广东省科学院测试基金;; 中国科学院“九五”重点基金!(KZ95 2 J1 10 5 )联合资助
【CateGory Index】: Q946
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved