FOOD SCIENCE ›› 2008, Vol. 29 ›› Issue (11): 189-192.

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Optimization of Preparation Technology Tilapia Skin Collagen Polypeptide Chelated with Zinc by Response Surface Methodology

 LIU  Cheng-Mei, YANG  Shan-Shan, LIU  Wei, CHEN  Ting-Ting, YIN  Man   

  1. 1.State Key Laboratory of Food Science and Technology,Nanchang University,Nanchang 330047,China;2.Sino-German Food Engineering Center,Nanchang University,Nanchang 330047,China
  • Online:2008-11-15 Published:2011-12-08

Abstract: The water-bath heating method was used to prepare zinc-tilapia skin collagen polypeptide chelate used as zinc supplement,and the response surface methodology(RSM) was used to determine the optimum chelation conditions for chelation ratio.It was found that under the conditions of water-bath temperature 60 ℃,pH 5.3,molar ratio of TSP-I to zinc sulfate 2:1,concentration of TSP-I 3.4 g/100 ml and chelation time 40 min,the theoretical chelation ratio is 92.57% and the practical one is 92.17%.

Key words: tilapia skin collagen polypeptide, zinc supplement, chelated zinc, response surface methodology