FOOD SCIENCE ›› 2008, Vol. 29 ›› Issue (1): 207-211.

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Solid Fermentation Optimizations of Plasmin High-producing Mold  

 MIN  Wei-Hong, LI  Jia, WANG  Ying, ZHANG  Jin-Yu, LI  Yu   

  1. 1.College of Food Engineering, Jilin Agricultural University, Changchun 130118, China; 2.Mycological Institute, Jilin Agricultural University, Changchun 130118, China; 3.School of Food and Biological Technology, Changchun Vocational Institute of Technology, Changchun 130022, China
  • Online:2008-01-15 Published:2011-07-28

Abstract: A plasmin activity producing mold was screened from traditional bean ferment products. The mold is found to be Penicillium curinum Thom by appraisement. The plasmin activity reachs 660 U/g after mutagenesis. The optimized ferment conditions for the mold are: m(wheat bran):m(pea)=1:3, pH 5.5, 0.75 ml water per 1 g materials, MnSO·4H2O 0.25%, (NH4)2SO4 1.4%, innoculation quantity 17.5%, fermentation temperature 30 ℃ and fermentation time 72 h. Under these conditions, the mold plasmin activity is originally 873.76 U/g whereas it is increased to 213 U/g after being optimized.

Key words: fibrinolysin, solid fermentation, optimization