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Fig. 5 | Annals of Microbiology

Fig. 5

From: Coproduction of menaquinone-7 and nattokinase by Bacillus subtilis using soybean curd residue as a renewable substrate combined with a dissolved oxygen control strategy

Fig. 5

Changes in CFUs and MK-7 and NK production during the course of 3.7-L bioreactor fermentation at 37 °C and 200 rpm. The medium was composed of soybean curd residue (12.2%, w/v), soya peptone (5.7%, w/v), lactose (2.6%, w/v), and K2HPO4 (0.6%, w/v). The aeration rate was 1.2 vvm for 168 h (a) and 2.0 vvm for 36 h and then was maintained at 0.8 vvm for 108 h (b)

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Annals of Microbiology

ISSN: 1869-2044

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