FOOD SCIENCE ›› 2013, Vol. 34 ›› Issue (5): 67-71.doi: 10.7506/spkx1002-6630-201305014

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Thermal Degradation and Kinetics of Pigment from Raddish Red

DONG Nan1,WANG Qiang2,LEI Dan-dan1,LIU Hong3,LIU Jia1,ZHAO Guo-hua1,4,*   

  1. 1. College of Food Science, Southwest University, Chongqing 400715, China; 2. Department of Biological and Chemical Engineering, Chongqing University of Education, Chongqing 400067, China; 3. Agricultural Information Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China; 4. Chongqing Special Food Programme and Technology Research Center, Chongqing 400715, China
  • Received:2012-01-05 Revised:2013-01-23 Online:2013-03-15 Published:2013-04-16
  • Contact: ZHAO Guo-Hua E-mail:zhaoguohua1971@163.com

Abstract: The degradation of raddish red pigment in different matrixes (0.1 mol/L, pH 3.0 sodium phosphate buffer and soft drink with different amounts of vitamin C) during storage and heat treatment was explored. The raddish red pigment was degraded markedly during heat treatment at 75—95 ℃ in a temperature-dependent manner and a first-order reaction kinetic model. Raddish red pigment in soft drink with 120 mg/L vitamin C revealed the highest stability during heat-treatment. The degradation of raddish red pigment during the storage at 4 ℃ and 25 ℃ was fitted by zero-order reaction kinetic and firstorder reaction kinetic models, respectively.

Key words: raddish red pigment, thermal degradation, degradation kinetic model

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