Chemistry: molecular biology and microbiology – Micro-organism – tissue cell culture or enzyme using process... – Preparing compound containing saccharide radical
Patent
1993-05-07
1994-11-01
Lilling, Herbert J.
Chemistry: molecular biology and microbiology
Micro-organism, tissue cell culture or enzyme using process...
Preparing compound containing saccharide radical
435822, 435823, C21P 1904
Patent
active
053607236
ABSTRACT:
Provided is a method for controlling the molecular weight (i.e., lowering) of microbially-derived celluloses. The lowering of the molecular weight is achieved by adding 2-deoxy-D-glucose to the liquid or solid medium in which Acetobacter xylinum or any other cellulose-producing microbe is grown. The molecular weight of the cellulose produced by the microbes grown in such media varies approximately inversely with the concentration of 2-deoxy-D-glucose in the culture medium. The method thus provided by the present invention is useful in providing microbial source cellulose which has a number average molecular weight of about 7.times.10.sup.5 to about 1.times.10.sup.4. Such lower molecular weight celluloses are useful in coatings formulations in which a relatively lower viscosity binder is desired.
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Gardner Robert M.
Hyatt John A.
Thatcher Scott R.
Eastman Chemical Company
Graves, Jr. Bernard J.
Lilling Herbert J.
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