Process for the production of dextran polymers of controlled mol

Details Process for the production of dextran polymers of controlled mol Process for the production of dextran polymers of controlled mol

1991-03-05

1993-07-20

Griffin, Ronald W.

Chemistry: molecular biology and microbiology

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

Preparing compound containing saccharide radical

435211, C12P 1908

Patent

active

052292770

ABSTRACT:
A process for the production of dextran polymers of controlled average number molecular weight sizes, and molecular weight size distributions via the mixed culture fermentation of Leuconostoc mesenteroides and a constitutive mutant microorganism capable of elaborating the enzyme dextranase, particularly Lipomyces starkeyi ATCC 74054, in the presence of sucrose. The Leuconostoc mesenteroides produces the dextran polymer, and the mutant Lipomyces starkeyi ATCC 74054 concurrently produces dextranase, an enzyme whose activity reduces the size of the dextran polymers and permits their growth or reduction in molecular weight size in direct relation to the temperature and time period regimen imposed as conditions for the reactions.

REFERENCES:
patent: 4487831 (1984-12-01), Day et al.
patent: 4732854 (1988-03-01), Day et al.
patent: 4820640 (1989-04-01), Day et al.

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