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Bacterial cellulose production by Gluconacetobacter hansenii in an agitated culture without living non-cellulose producing cells by Jae Yong Jung; Joong Kon Park; Ho Nam Chang is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

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Bacterial cellulose (BC) was produced by Gluconacetobacter hansenii PJK in a jar fermenter equipped with a 6 flat-blade turbine impeller and the relationship between the populations of non-cellulose producing cells (Cel -mutants) and BC production was investigated. The population of Cel -mutants converted from cellulose producing cells (Cel + cells) decreased as the impeller speed increased. Cel + cells seemed to be protected from the strong shear stress generated by the impeller rotating at a high speed by the BC net produced by the cells. There was an optimum impeller speed in maximizing the population of Cel + cells and BC production. The optimum impeller speed increased with ethanol supplementation to a basal medium. The by-product, water-soluble polysaccharide (WSPS), was a homopolysaccharide of glucuronic acid. WSPS production was related to the population ratio of Cel + cells to the total cells.

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Author

Jae Yong Jung; Joong Kon Park; Ho Nam Chang

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0141-0229)

Published

2005

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)