Optimization of Bacterial Cellulose Production by Fermented Soybean Molasses with Komagataeibacter intermedius

doi:10.7506/spkx1002-6630-201718002

Abstract

Abstract: In this study, Komagataeibacter intermedius CGMCC12562 was employed to produce bacterial cellulose (BC) from soybean molasses. The fermentation process was optimized to improve BC yield. Through one-factor-at-a-time experiments, the soluble solids content (SSC) of soybean molasses, and corn gluten meal, ZnSO4 and malic acid were selected as the factors with a significant influence on BC production for optimization by response surface methodology. It was found that the optimized culture medium consisted of soybean molasses with an SSC level of 14.13 °Brix, 1.6% corn gluten meal, 0.11% ZnSO4 and 0.41% malic acid. The BC yield was as high as (15.68 ± 0.82) g/L after 7 days of culture at 30 ℃ for in a 250-mL conical flask containing 16% of the medium with an inoculum size of 10% at an initial pH of 6.0 under static?cultivation?conditions.

Key words: soybean molasses, bacterial cellulose, Komagataeibacter intermedius, medium, optimization

CLC Number:

TS214.9

YIN Yuan, MA Jiage, NI Chunlei, CHENG Jianjun, XU Su. Optimization of Bacterial Cellulose Production by Fermented Soybean Molasses with Komagataeibacter intermedius[J]. FOOD SCIENCE, 2017, 38(18): 8-16.

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Optimization of Bacterial Cellulose Production by Fermented Soybean Molasses with Komagataeibacter intermedius

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