Abstract
A yogurt supplemented with B. longum BB536 was administered at 250 ml per day for 2 weeks to six healthy volunteers. The effects on the fecal microflora, fecal putrefactive substances, fecal enzymatic activities and fecal properties were examined and compared with the effects of standard yogurt. A significant increase (p<0.05) in the proportion of Bifidobacterium in the fecal microflora was observed following ingestion of yogurt containing B. longum BB536. The numbers of Lactobacillus also increased significantly (p<0.05). Clostridium sp. and total aerobic bacteria in the feces tended to decrease. The level of some putrefactive substances, including ammonia (p<0.05), indole and p -cresol decreased, whereas the levels of short chain and volatile fatty acids increased significantly (p<0.01). Urease activity decreased concomitant with the decrease in ammonia levels. These findings suggested that administration of yogurt containing B. longum BB536 was effective to improve the intestinal environment. Similar effects were observed with standard yogurt but they were less evident than in the case of yogurt containing B. longum BB536. Keywords: bifidobacteria, Bifidobacterium longum , yogurt, fecal flora, intestinal environment.
Published Version
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