"Effects of rice starch-isoflavone diet or potato starch-isoflavone diet on plasma isoflavone, plasma lipids, cecal enzyme activity, and composition of fecal microflora in adult mice."
2002
"Tamura, M. (National Food Research Inst., Tsukuba, Ibaraki (Japan)) | Hirayama, K. | Itoh, K. | Suzuki, H. | Shinohara, K. "
"The effect of rice starch-isoflavone diet or potato starch-isoflavone diet on plasma concentration of isoflavones, plasma lipids, cecal enzyme activity, and intestinal microflora were studied. Male 15-wk-old mice were fed a rice-starch-based or potato-starch-based diet supplemented with isoflavones for 4 wk, and plasma samples.,cecal contents, and feces were collected individually. Plasma equol concentration was significantly higher in the potato-isoflavone diet group than in the rice-isoflavone diet group, but no significant difference was observed in plasma daidzein or genistein concentration. Plasma total cholesterol concentration was higher in the potato-isflavone diet group, but no significant differnce was observed in plasma triglyceride concentration. Both cecal beta-glucuronidase and beta-glucosidase activities were significantly higher in the rice-isoflavone diet group. The number of bifidobacteria was significantly in the potato-isoflavone diet group. These results indicate that different types of starches have different influences on plasma isoflavone and suggest that the influences might be through the change of host physiology and/or the metabolism and composition of intestinal microflora."
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