Screening and evaluating of Lactobacillus to promote defecation

• 1、School of Food Science and Technology, Jiangnan University, Wuxi 214122

Abstract：Lactobacillus, as a symbiotic bacteria in human and animal intestines, has good probiotic characteristics, and the function of regulating intestinal function is the basic probiotic function. In this study, 45 strains of Lactobacillus species as the research object, through the research on the acid and bile salt tolerance, oligosaccharide utilization and ability to produce short chain fatty acids, combined with Lactobacillus antibiotic security, obtained three strains with good physical properties, were Lactobacillus casei LC9, Lactobacillus fermentum LF37 and Lactobacillus rhamnosus LR45. The three strains of bacteria were administered to the mice for a period of 15 days to test wether they have the effect of regulating intestinal function. The results showed that Lactobacillus casei LC9 can improve intestinal transport capacity, increase fecal water content and the content of short chain fatty acids, can promote bowel health functions; Lactobacillus fermentum LF37 and Lactobacillus rhamnosus LR45 can improve intestinal transport capacity, increase fecal content of short chain fatty acids, can promote bowel health care function.

Keywords： food science Lactobacillus Intestinal function health food