Extracellular microbial polysaccharides: Kinetics of Pseudomonas sp., Azotobacter vinelandii, and Aureobasidium pullulans batch fermentations

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Abstract
The generality of a fermentation kinetic model (developed earlier for xanthan gum production by Xanthamonas campestris) is tested by application to several other polysaccharide‐producing fermentations. With literature batch data for exopolysac‐charides from Azotobacter vinelandii, Pseudomonas sp., and Aureobasidium pullulans, the model is shown to provide a reasonable description for biomass (X), product (polysaccharide, P), and substrate (S) evolution in time. Thus a general kinetic model for microbial fermentations that produce exopolysaccharides is established.