High pullulan content product, and its preparation and uses

Details High pullulan content product, and its preparation and uses High pullulan content product, and its preparation and uses

1994-12-22

1996-05-21

Wityshyn, Michael G.

Chemistry: molecular biology and microbiology

Micro-organism, tissue cell culture or enzyme using process...

Preparing compound containing saccharide radical

435101, 53612312, C12P 1910, C12P 1904

Patent

active

055189024

ABSTRACT:
Disclosed is a novel high pullulan content product containing pullulan having an average molecular weight less than 250,000, said product being prepared by continuously cultivating a microorganism capable of producing pullulan in a nutrient culture medium containing a 10-20 w/v % saccharide while controlling the viscosity of the nutrient culture medium to a level below 30 cp. The product can be advantageously used in a variety of fields such as viscosity-imparting agent, coating agent, adhesive, formed product, food product, cosmetic, pharmaceutical, and material for agriculture, forestry, stock raising and paper processings, as well as for mining and manufacturing industries.

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McNeil et al; "Temperature effects on polysaccharide formation by Aureobasidium pullulans in stirred tanks" pp. 521-526; Enzyme Microb. Technol., 1990, vol. 12, Jul.
Boa et al; "Pullulan from Peat Hydrolyzate Fermentation Kinetics"; pp. 463-470; Biotechnology and Bioengineering, vol. XXX (1987).
Bulmer et al; "The effect of ammonium ions and pH on the elaboration of the fungal extracellular polysaccharide, pullulan, by Aureobasidium pullulans"; pp. 362-365; Appl. Microbiol Biotechnol (1987).

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