Effect of exopolysaccharide from Bacillus sp. isolated from cultures use in malay traditional medicine

Abstract

Polysaccharides represent a class of high-value polymers with many industrial application in food, cosmetic, textile and pharmaceutical industries due to their properties. The objective of this study is to determine the effect of exopolysaccharide from B.subtilis, B.coagulans and B.licheniformis on pathogenic bacteria. Polysaccharides isolation was isolated by using ethanol method. The exopolysaccharide obtained was test against to ten strains of pathogenic bacteria. Antibacterial activity was determined using disks diffusion and drop test method. Antibacterial test showed that none of the polysaccharides have antibacterial activity. In contrast the exopolysaccharides was found to increase the growth of the tested bacteria. Exopolysaccharides from the Bacillus strains used doesn't effect on the bacteria. However, in the last forty years, new polysaccharides from cultivable microbial sources have received mcrease attention. Thus, exopolysaccharides have been produced by different bacteria on a commercial scale.