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Abstract ▼ AI-Helper

Zoogloea ramigera 115 was selected for the production of viscous microbial polysaccharide for bioflocculants usage. Batch, fed-batch, and continuous culture processes were examined with regard to the high biopolymer production. Several carbon sources were tested, including glucose, lactose, molasses...

Zoogloea ramigera 115 was selected for the production of viscous microbial polysaccharide for bioflocculants usage. Batch, fed-batch, and continuous culture processes were examined with regard to the high biopolymer production. Several carbon sources were tested, including glucose, lactose, molasses, and cheese whey. The C/N ratio of 90 was most effective for biopolymer production from glucose, while the C/N ratios of 30 for lactose and 60 for both molasses and cheese whey substrate gave a maximum production. Fed batch culture proved more effective to increase final biopolymer concentration than batch culture. Continuous fermentation with two stages modifying C/N ratio increased the productivity. The production rates were a maximum at dilution rate of 0.048 $hr^{-1}$ for molasses and at 0.096 $hr^{-1}$for cheese whey.

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