FOOD SCIENCE ›› 2009, Vol. 30 ›› Issue (23): 415-418.doi: 10.7506/spkx1002-6300-200923093

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Effect of Ginkgo Biloba Extract on Free Radicals in Different Fiber Types of Rat Quadriceps by Electron Spin Resonance

LI Wen-jian1,2，YANG Ze-yi3，CAO Yuan-lin4，CHEN Zong-dao1,*   

  1. 1. College of Food Science, Southwest University, Chongqing 400716, China；2. Key Laboratory of Physical Fitness Assessment
    and Sport Performance Supervision, General Administration of Sport of China, Chongqing 400015, China；
    3. Institute of Sport Medicine, General Administration of Sport of China, Beijing 100100, China；
    4. Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
  • Received:2008-12-23 Online:2009-12-01 Published:2010-12-29
  • Contact: CHEN Zong-dao E-mail:chenzongdao@swu.edu.cn

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Abstract:

This study was aiming to investigate the effects of Ginkgo biloba extract (GBE) on free radicals of different fibre types of quadriceps in rats by electron spin resonance (ESR). Results showed that GBE suspension was able to significantly enhance the intensities of free radical signals (gQ=2.0050) in white muscle of exercise rats (P＜0.05) while the decrease was observed in red muscles decreased (P=0.06). However, the intensity was decreased by 74.48% in white muscle (P＜0.005) and by 46.25% in whole quadriceps (P＜0.005) at instant while it was elevated remarkably in red muscle (P＜0.05) and whole quadriceps (P＜0.05) after 24h of strenuous exhaustive exercise. The results showed that GBE could accelerate clearance of free radicals in red muscle and enhance the anti-oxidant activity and exercise tolerance of white muscles.

Key words: ESR, ginkgo biloba extract, exercise rats, exhaustive exercise, quadriceps, white muscle, red muscle, free radicals

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