FOOD SCIENCE ›› 2008, Vol. 29 ›› Issue (8): 269-271.

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Optimization of Enzymatic Extraction Technology of Concentrated Protein from Corn Gluten Meal

 LI  Meng-Qin, LI  Yun-Gang, WU  Kun, WANG  Zhi-Hao   

  1. College of Food Science and Technology,Henan Agricultural University,Zhengzhou 450002,China
  • Online:2008-08-15 Published:2011-08-26

Abstract: The technology of enzymatic extraction of concentrated protein from corn gluten meal(CGM) was optimized by mono-factor test and response surface methodology.The results showed that the optimum conditions are as follows:ratio of solid to liquid 1:4,enzyme amount 36 U α-amylase/g CGM,temperature 40 ℃,pH 6.2 and enzymatic hydrolysis time 90 min. Under these conditions,the purity of CGM concentrated protein reaches 78.96%,and its yield is 80.13%.

Key words: corn gluten meal, concentrated protein, enzymatic method, response surface methodology