Mannan depolymerase enzyme combination
A combination of 2 enzymes from different microbiological sources with the same substrate specificity, but with different characteristics with respect to pH-activity and pH-stability, is described. The 2 mannan depolymerases are derived from the Bacillus subtilis Group, the other from the Aspergillus niger Group. Mannan depolymerase is the name applied to a hydrolase enzyme which acts on a number of natural plant gums containing galactomannan polymers. Such a carbohydrate is a major constituent of commercial guar gum and locust bean gum, well-known water-soluble thickening agents. The mannan depolymerase is capable of producing a cleavage in the substrate by the addition of water and thereby causing a reduction in viscosity of the gum solution. (9 claims)
- Assignee:
- Baxter Labs., Inc.
- Patent Number(s):
- US 3684710
- OSTI ID:
- 5925276
- Country of Publication:
- United States
- Language:
- English
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59 BASIC BIOLOGICAL SCIENCES
ASPERGILLUS
BACILLUS
BACTERIA
ENERGY SOURCES
ENZYME ACTIVITY
ENZYMES
FLUID INJECTION
FOSSIL FUELS
FUELS
FUNGI
HORMONES
HYDROGEN COMPOUNDS
MICROORGANISMS
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
PETROCHEMICALS
PETROLEUM
PETROLEUM PRODUCTS
PH VALUE
PLANTS
POLYMERS
RESINS
VISCOSITY
VITAMINS
WATER
WATER TREATMENT
WATERFLOODING
WELLS