Soil paenibacillus and application thereof

Abstract

The invention discloses soil paenibacillus and application thereof. The soil paenibacillus is soil paenibacillus NUST16, and the preservation number is CCTCC No.M2016542. According to the soil paenibacillus, the strain is unique in property, exopolysaccharide can be produced, the yield can reach 15 g / L, and the produced exopolysaccharide is easy to separate and purify and unique in property, can be directly dissolved in cold water and regulate the rheological property of an aqueous solution, has the significant effect of increasing the viscosity of the solution, can resist high-concentration Na<+>, K<+>, Ca<2+> and Mg<2+> in the solution and increase the viscosity of the solution by multiple times through simple heating-cooling treatment, is stable in property and can form thermo reversible gel.

Description

technical field

[0001] The invention belongs to the technical field of microorganisms, and relates to Paenibacillus soil and its application. Background technique

[0002] Due to its special rheological properties, microbial exopolysaccharides can be used as thickeners, suspending agents or stabilizers, and are widely used in food, cosmetics and other industries. Microbial exopolysaccharides with typical rheological characteristics such as xanthan gum (Xanthan gum) can increase the viscosity of the solution, and have a certain temperature resistance. After a moderate increase in temperature, the viscosity basically remains stable; Ca 2+ It can form an irreversible brittle gel under existing conditions; thermal gel (Curdlan gum) is insoluble in water, but its suspension can form a thermally reversible elastic gel after heating to 55°C, and can form a thermally irreversible gel after heating to 80°C Brittle gel; Welan gum (Welan gum) has good heat-resistant properties and ha...

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