FOOD SCIENCE ›› 2013, Vol. 34 ›› Issue (3): 1-6.

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Studies antioxidation activity of Rice bran polypeptide with different molecular weights

Min ZHANG   

  • Received:2011-12-14 Revised:2013-01-06 Online:2013-02-15 Published:2017-12-29
  • Contact: Min ZHANG E-mail:7777xzm@163.com

Abstract:

The ultrafiltration membranes with the molecular weight cut-off (MWCO) 10 000 and 3 000 u were applied to isolate the of alkali protease in rice bran protein and obtain the polypeptide mixture components with different molecular weights,the activities of each obtained component were analyzed combining with six antioxidation indicators. As seen from the results, antioxidation capacity of rice bran protein hydrolysate relate to weight of protein. The polypeptide that MW>10KDa has the strongest radical scavenging capacity,and it belong to the reactive oxygen radical scavenging antioxidation mechanism;that 3KDa

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