FOOD SCIENCE ›› 2011, Vol. 32 ›› Issue (19): 100-103.doi: 10.7506/spkx1002-6630-201119022

• Basic Research • Previous Articles     Next Articles

Antioxidant Activity of Soluble Dietary Fiber from Crab Apple Pomace

NIU Guang-cai1,ZHU Dan2,XIAO Dun3,WEI Wen-yi1,WANG He-lin1   

  1. (1. College of Food, Heilongjiang Bayi Agricultural University, Daqing 163319, China; 2. College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, China; 3. Heilongjiang Jiusan Oil & Fat Co. Ltd., Harbin 150090, China)
  • Published:2011-10-12

Abstract: Objective: To explore the antioxidant activity of soluble dietary fiber (SDF) prepared by fermenting crab apple (Malus asiatica) pomace with mixed strains. Methods: The scavenging rates of SDF derived from crab apple pomace against hydroxyl, superoxide anion and DPPH radicals and its inhibitory effect against lipid peroxidation in soybean oil were evaluated. Results: The SDF revealed strong scavenging capacity against hydroxyl and superoxide anion free radicals with an EC50 of respectively 4.63 mg/mL and 8.84 mg/mL, but the scavenging capacity against DPPH free radicals was weaker. The antioxidant effect of the SDF on soybean oil was similar to that of BHA. Conclusion: SDF derived from crab apple pomace has a strong scavenging capacity agaisnt hydroxyl, superoxide anion free radicals and an obvious antioxidant effect on soybean oil. Therefore, it can be applied as a food antioxidant, which will have promising application prospects.

Key words: crab apple, soluble dietary fiber, scavenging free radical, antioxidation

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