FOOD SCIENCE ›› 2009, Vol. 30 ›› Issue (16): 89-93.doi: 10.7506/spkx1002-6630-200916014

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Preparation of A Food-grade Preservative, Calcium Propionate

GAO Xin1,YANG De-yu2,WANG Xiao-gang1,LI Feng1,MEI Xiao-bing1,FAN Zheng1   

  1. 1. School of Chemical Engineering, Northwest University, Xi'an 710069, China;
    2. College of Chemistry and Material Science, Northwest University, Xi'an 710069, China
  • Received:2008-07-31 Revised:2009-06-16 Online:2009-08-15 Published:2010-12-29
  • Contact: GAO Xin E-mail:gaoxin@nwu.edu.cn

Abstract:

A new technology for producing calcium propionate from oyster shell under normal pressure and temperature was studied. Based on the single factor tests of water/shell ratio, shell-acid ratio, reaction time and neutralization time, the optimum production conditions were determined by response surface methodology (RSM) as follows: particle diameter of oyster shell 0.125 -0.160 mm, water/shell ratio 16.7, shell/acid ratio 1.08, reaction time under normal temperature 172 min, pH of solution after reaction adjusted to 7-8, and neutralization time 38 min. The verification test showed that the content of calcium propionate reached 99.61%.

Key words: oyster shell, calcium propionate, response surface methodology

CLC Number: