FOOD SCIENCE ›› 2007, Vol. 28 ›› Issue (6): 197-201.

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Culture Medium Optimization of Monascus Pigments Extracted from Purple Sweet Potato Starch with Liquid Fermentation

 WANG  Zhi-Jun, YI  Shan-Shan, HAN  Yong-Bin, GU  Zhen-Xin   

  1. 1.College of Food Science and Engineering, Yangzhou University, Yangzhou 225001, China; 2.Key Laboratory of Agricultural and Animal Products Processing and Quality Control, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
  • Online:2007-06-15 Published:2011-12-31

Abstract: Purple sweet potato starch was taken as raw material for cultivation and the culture medium of Monascus with liquid fermentation were optimized by response surface methodology (RMS). The results indicated that the second-order polynomial mathematic model of Monascus pigments production yield by Monascus is significant (p=0.0103) and the determination R2 is 0.947. The predicted Monascus pigments production yield by Monascus is 177.009 U/ml when the contents of purple sweet potato starch, tryptone and the L-glutamine natrium are 12.63%, 1.14% and 0.35%, respectively.

Key words:  , purple sweet potato starch; Monascus pigments; liquid fermentation;