Effect of PS-B1 (a fermented product cultured from soy flour using lactic acid bacteria) on defecation and skin condition

Abstract

　Constipated subjects cooperated in clinical trials to investigate effects of lactic acid bacterial fermentation filtrate (PS-B1) on defecation and stool properties and skin qualities. The 27 females who were not allergic to soy took 10 mL of PS-B1 (n=14) or placebo (n=13) once a day before breakfast for 4 weeks. PS-B1 group showed increases in defecation number and volume and improvements in stool properties. People generally are prone to make rough skin with constipation and there is the report that constipation elimination makes the skin in a good condition. This study suggests that PS-B1 contributes directly to the improvement of skin qualities, that is, skin gloss, color uniformity and moisture retention in addition to the constipation improvement.