FOOD SCIENCE ›› 2010, Vol. 31 ›› Issue (21): 72-75.doi: 10.7506/spkx1002-6630-201021016

• Basic Research • Previous Articles     Next Articles

Chemical Composition and Functional Properties of Rapeseed Protein Hydrolysates Left after Aqueous Enzymatic Extraction of Oil

WANG Ying-yao,WEI Cui-ping,LUAN Xia,ZHANG Shuang-yu ,DU Chuan-lin   

  1. Academy of State Administration of Grain, Beijing 100037, China
  • Received:2010-05-13 Revised:2010-09-25 Online:2010-11-15 Published:2010-12-29
  • Contact: WANG Ying-yao E-mail:wyy@chinagrain.org

Abstract:

The chemical composition, physico-chemical properties and in vitro functional properties of the rapeseed protein hydrolysates (RPHs) left after aqueous enzymatic extraction of oil were studied. The hydrolysates mostly consisted of protein, carbohydrate and ash, and the contents were 54.95%, 28.83% and 14.82%, respectively. The hydrophobic amino acid content was 37.21 g/100 g protein. The hydrolysates had an excellent solubility and lower viscosity at high concentration. Their reducing power and abilities to scavenge DPPH and hydroxyl free radicals were all obvious, indicating good antioxidant effect in vitro.

Key words: rapeseed protein hydrolysates, composition, physico-chemical properties, antioxidant activity

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