Study on the liquid fermentation of Selem’Nattokinase[J]. Science and Technology of Food Industry, 2013, (08): 219-222. DOI: 10.13386/j.issn1002-0306.2013.08.031
Citation: Study on the liquid fermentation of Selem’Nattokinase[J]. Science and Technology of Food Industry, 2013, (08): 219-222. DOI: 10.13386/j.issn1002-0306.2013.08.031

Study on the liquid fermentation of Selem’Nattokinase

  • This study realized the biological transformation form inorganic selenium into organic selenium by liquid fermentation of the Bacillus natto, and obtained Selem’Nattokinase. Optimal fermentation conditions were 2.5% soy peptone, 2% glucose, 10-6 mol/L Na2SeO3, 0.05% MgSO4, 0.02% CaCl2, 0.2% /0.1% K2 HPO4/KH2PO4, pH7.0, fermentation temperature 37℃ , inoculum size 2% , fermentation time 60h. Under these conditions, the activity of the Selem’Nattokinase reached 196.81U/mL (Folin-phenol method) , and the selenium content of its SDS-PAGE protein band was 0.060μg/g.
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