Paenibacillus sp. WN9 an extracellular microbial polysaccaride produced thereby and an additive for cement mixture containing the polysaccaride

摘要

The present invention is a novel Waist Bacillus (Paenibacillus sp.) Strain, from which is produced bacteria in vitro polysaccharide and relates to additives for cement mixtures containing them, in particular in Waist Bacillus of the present invention isolated from soil WN9 strain isolated from soil It has a molecular weight of about 3150 and all men producing bacteria in vitro polysaccharide, the bacterium in vitro polysaccharide has got the characteristics of maintaining a stable viscosity also changes in temperature and pH using the same as an additive for cement mixture to prevent segregation of the cement mixture to improve the physical properties of It relates to the application.