FOOD SCIENCE ›› 2009, Vol. 30 ›› Issue (17 ): 102-105.doi: 10.7506/spkx1002-6630-200917023

Previous Articles     Next Articles

Effects of Sodium Sulfite on Hydrolysis of Rapeseed Meal by Proteases

JU Xing-rong,WANG Dan-dan,YAN Mei-rong   

  1. College of Food Science and Engineering, Nanjing University of Finance and Economics, Key Laboratory of Grain and Oils Quality
    Control and Deep-Utilizing Technology of Jiangsu Province, Nanjing 210003, China
  • Received:2009-06-05 Online:2009-09-01 Published:2014-04-14
  • Contact: JU Xing-rong E-mail:xingrongju@163.com

Abstract:

Peptides were prepared by hydrolysis of rapeseed meal by papain, neutrase and flavourzyme, respectively. The effects of sodium sulfite at low concentration on proteolysis rate of rapeseed meal were investigated. The hydrolysis rates of rapeseed protein by the three enzymes were increased by the addition of sodium sulfite to different extents. After the 60 min hydrolysis, the degrees of hydrolysis of rapeseed protein by papain, neutrase and flavourzyme with the addition of sodium sulfite were 2.5, 2.9 and 1.7 times of those in the absence of sodium sulfite, respectively. Size exclusion chromatographic analysis showed that the molecular weights of the rapeseed protein hydrolysates with the addition of sodium sulfite were lower than those without sodium sulfite.

Key words: rapeseed meal, protease, sodium sulfite, degree of hydrolysis

CLC Number: