The Influence of Diet Composition on the Intestinal Synthesis of Riboflavin and Intestinal Microflora (Part 5):Effect of Sorbitol Supplementation in the Rat
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We have previously reported that sorbitol might have a riboflavin sparing action in the rat. Therefore, it seems, very interesting to investigate the mechanism of sparing action of riboflavin.In this report, the riboflavin content in cecum of rats supplemented with sorbitol was measured. Further, the changes that may occur in the intestine by sorbitol supplementation were also investigated.Growing rats of approximately 60-80 grams body weight were divided into two groups. The one was the riboflavin supplemented group, and the other was the riboflavin non-supplemented group.The former was administered orally 5γ of riboflavin per day per rat in addition to riboflavin contained in the diet. The latter was supplied only approximately 0.7γ of riboflavin per day per rat from the diet. Each group was divided into three diet groups: sucrose, sucrose plus sorbitol and the dextrin group.Riboflavin content and bacterial counts in cecum were estimated by the same method as described in the previous report.It was found that, the similar results as in weight gain were also obtained in total riboflavin content of cecum.Moreover, no significant differences were seen in cecal total bacterial counts. However, the increase in coli form bacterial count in cecum was observed in the sucrose diet group, while coli form bacteria had a tendency to decrease in the sucrose plus sorbitol diet.From these results, it has been further asertained that sorbitol possesses a riboflavin sparing action. Moreover, it seems that coli form bacteria does not contribute so much to riboflavin synthesis in rat intestine.
- 特定非営利活動法人 日本栄養改善学会の論文
特定非営利活動法人 日本栄養改善学会 | 論文
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