Sweet potato (Ipomoea batatas Poiret) leaves suppress an elevation of blood glucose in rats
スポンサーリンク
概要
- 論文の詳細を見る
The paper was planned to investigate the effect of dietary fiber insweet potato leaves (SPL) on modulation of blood glucose metabolism in rats. First, diet containing 5% freeze-dried SPL powder was given to the male GK rats aged 6 wks old by meal feeding. After 6 weeks after feeding started, blood glucose and insulin levels in the 5% SPL diet group were significantly reduced compared with those of the control diet group. Effectiveness of SPL on modulation of glucose metabolism in the GK rats might be supported by a significant reduction of blood cholesterol, especially LDLcholesterol.<BR>A soluble dietary fiber (SDF) was extracted from the SPL powder. This substance was found to show high viscosity and to be mainly composed of xylose (34.7%) and uronic acid (38.8% as galacturonic acid) by sugar composition analysis.<BR>An elevation of postprandial blood glucose level in rats given 5.0ml of 20% glucose solution containing 1% SPL-SDF orally was significantly suppressed as compared with that in the control rats given 20% glucose solution only.<BR>The diffusion rate of glucose and the permeation rate of glucose in the cultured Caco-2 cells were both significantly reduced by the addition of appropriate amounts of SPL-SDF comparing to the control, respectively.<BR>These results suggest that the main effective substance of SPL for suppressing blood glucose elevation is a kind of mucilage SDF.<BR>The mechanism by which may be largely attributable to delayed transport from the stomach and inhibition of diffusion and absorption in the small intestine by viscous SDF.
- 日本食生活学会の論文
日本食生活学会 | 論文
- 北海道産クロテッドクリームの性状に関する研究
- タケ幼少体に含まれるビタミンB_12類似体の簡易同定と含有量の測定
- テーブルクロスの色が喫食者の心理に及ぼす影響--異なる室内照度下での検討
- 新たな魚醤製造法の開発
- 女子短大生の食行動に関する研究 : 食生活の実態と態度