Effects ofLactobacillusGG Strain Intake on Fecal Microflora and Defecation in Healthy Volunteers

Abstract

Effects ofLactobacillusGG yoghurt administration on the composition of fecal bacteria and properties was tested in eight healthy Japanese volunteers. The volumes of intake of the yoghurt were 90g/day for 10 days and then 300g/day for 10 days continuously. During the intake of the yoghurt, the numbers of bifidobacteria and lactobacilli in the feces of all volunteers were significantly increased, whereas the number of lecithinase-negative clostridia was significantly decreased. The fecal ammonia concentration during the yoghurt feeding was lower than those before and after the intake.