Effects of soy polysaccharide on gastrointestinal functions, nutrient balance, steroid excretions, glucose tolerance, serum lipids, and other parameters in humans
1983
Tsai, Alan C. | Mott, Elayne L. | Owen, George M. | Bennick, Maurice R. | Lo, Grace S. | Steinke, Fred H.
Extract: A diet-controlled study with a cross-over design was conducted to determine the effect of soy polysaccharide on gastrointestinal functions, nutrient balance, steroid excretion, blood lipid levels, postprandial serum glucose response, and other blood parameters in healthy male human subjects. A total of 14 college students was selected to participate in the study on a voluntary basis and each served as his own control. The study had two 17-day feeding periods. During the first feeding period, half of the subjects served as controls, the other as experimentals. During the second feeding period, treatments were crossed. When serving as controls, subjects consumed a low-fiber basal diet; when serving as experimentals, the same diet was supplemented with 25 g/day of soy polysaccharide. Blood samples taken at the beginning and at the end of each period revealed no changes in serum lipid levels or other blood parameters by soy polysaccharide supplementation. Nutrient balance and fecal transit studies revealed a significant increase in fecal wet weight and fecal water content, but no changes in total dry weight, fecal neutral steroid, bile salt, protein, and mineral contents. Glucose tolerance tests conducted during each period revealed that addition of soy polysaccharide to the glucose solution significantly reduced the reactive hypoglycemia at 180 minutes. Results of the present study suggest that in healthy male subjects, supplementation of soy polysaccharide can result in an increase in wet fecal content and possibly some improvement in glucose tolerance response. (author)
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