ラットの消化吸収機能に及ぼす難消化性多糖類の影響
スポンサーリンク
概要
- 論文の詳細を見る
The present study was undertaken to determine whether indigestible polysaccharides could affect the function of digestion and absorption. Male rats of the Sprague Dawley strain (at 4 weeks of age and weighing 78-88 g) were fed either control diet containing no fiber or experimental diets containing 5% indigestible polysaccharides for 4 weeks. Indigestible polysaccharides used in this experiment were cellulose, agar, κ-carrageenan, Na-alginate, konjac mannan and pectin. The results obtained were as follows :<BR>1. Body weight gain for 4 weeks did not differ in all groups fed the indigestible polysaccharides. The inclusion of Na-alginate, κ-carrageenan, pectin and konjac mannan into the diets induced a significant increase in weight of small intestine, pancreas and caecum. The feeding of Na-alginate, pectin and κ-carrageenan significantly lengthened the small intestine. The most remarkable effect on the digestive organs was observed in the Na-alginate group. However, there was no difference in weight and length of digestive organs between the control group and the groups receiving cellulose and agar.<BR>2. The faecal dry weight increased in the groups receiving cellulose, agar and κ-carrageenan, but not in the groups of konjac mannan, pectin and Na-alginate. The apparent digestibility of dietary protein in the groups fed Na-alginate, κ-carrageenan, pectin and konjac mannan was significantly lower than the value in the control group, whereas it was not changed in the cellulose and agar groups. The apparent digestibility of fat decreased significantly in the groups consuming Na-alginate and pectin.<BR>3. Total activities of amylase and protease in the pancreas were not changed in the groups fed the indigestible polysaccharides except cellulose. In the cellulose group, activity of protease decreased significantly, but that of amylase did not. Activity of amylase in the contents of small intestine tended to be higher in the groups fed the indigestible polysaccharides, especially being significant in the groups of Na-alginate and κ-carrageenan. Activity of protease in the intestinal contents was significantly higher in the group of Na-alginate and lower in the group of konjac mannan than that in the control group.<BR>4. The viscosity of 0.2% solution of konjac mannan and Na-alginate was higher than the other polysaccharides, and that of 5% suspension of the diet containing Na-alginate was the highest. There-fore, the results suggest that the decrease of apparent digestibility induced by the indigestible poly-saccharides is attributed to their viscosity.
- 公益社団法人 日本栄養・食糧学会の論文
公益社団法人 日本栄養・食糧学会 | 論文
- 細胞内タンパク質のリサイクルとその生理的意義
- 栄養状態によるアルブミン合成の調節機構に関する研究 : (平成22年度日本栄養・食糧学会奨励賞受賞)
- 卵白食,卵白酵素分解物または遊離アミノ酸混合食を投与した幼若ラットの成長の比較
- 非熱凝固性卵白液の経腸栄養剤としての利用
- ラットの消化吸収機能に及ぼす難消化性多糖類の影響