FOOD SCIENCE ›› 2009, Vol. 30 ›› Issue (6): 92-96.doi: 10.7506/spkx1002-6630-200906017

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Optimization of Inhibitory Conditions against Yacon (Smallanthus sonchifolius) Juice Browning

HU Yun-feng,HU Ming,XING Ya-ge,LIU Xiao-yuan,YANG Zhen   

  1. (College of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China)
  • Received:2008-05-01 Revised:2008-06-24 Online:2009-03-15 Published:2010-12-29
  • Contact: HU Ming E-mail:huming810925@yahoo.cn;huming810925@163.com

Abstract:

In single factor tests, the inhibitory effects of vitamin C (VC), DL- malic acid and L-cysteine (L-Cys) amounts and temperature on yacon juice browning were investigated. Based on the results of single factor tests, the optimization tests of the four factors were designed according to Box-Behnken central combination design principle, and the test results were analyzed by response surface regression. The results showed that optimal inhibitory conditions against yacon juice browning are as follows: VC amount 0.31%, DL- malic acid amount 0.30%, L-Cys amount 0.30% and temperature 89 ℃, and under these conditions the change rate of browning is 20.88%.

Key words: yacon juice, browning, optimization

CLC Number: