Fermentation of resistant rice starch produces propionate reducing serum and hepatic cholesterol in rats

Hsing Hsien Cheng, Ming Hoang Lai

研究成果: 雜誌貢獻文章同行評審

129 引文 斯高帕斯(Scopus)

摘要

This study was designed to investigate the effects of different proportions of rice starch and cornstarch on lipid metabolism in rats fed high dietary cholesterol. Male Wistar rats were fed a 10 g/100 g fat diet containing I g/100 g cholesterol with 0 (control diet), 15, 30, 45 or 63 g/100 g rice starch with an enzyme resistant starch concentration of 1.26, 1.39, 1.52, 1.65 or 1.80 g/100 g, respectively, for 4 wk. Groups fed diets with <63 g/100 g rice starch were supplemented with cornstarch to 63 g/100 g. The two kinds of starch had different structures as seen using scanning electron microscopy (SEM). The rice starch was an aggregation (n = 20-60) of smaller granules (3-8 μm in diameter), whereas the cornstarch was composed of larger (5-15 μm in diameter), single granules. The compound rice starch (0.99 kg/L) was larger in size and denser in structure than cornstarch (0.63 kg/L). Serum total cholesterol concentrations in rats fed both the 45 and 63 g/100 g rice starch diets were significantly lower than in all other groups (P <0.05). The serum propionate concentration in the rats fed 63 g/100 g rice starch diets was significantly higher than that of other groups. Hepatic triglyceride and total cholesterol concentrations in rats fed 63 g/100 g rice starch diets were significantly lower than in the control group. These results suggest that, because the compound rice starch was an aggregation of smaller granules, larger in size and denser in structure than cornstarch, it was digested more slowly and altered lipid metabolism: Resistant rice starch may be fermented to produce propionate, which reduces serum and hepatic cholesterol.
原文英語
頁(從 - 到)1991-1995
頁數5
期刊Journal of Nutrition
130
發行號8
出版狀態已發佈 - 2000

ASJC Scopus subject areas

  • Food Science
  • Medicine (miscellaneous)

指紋 深入研究「Fermentation of resistant rice starch produces propionate reducing serum and hepatic cholesterol in rats」主題。共同形成了獨特的指紋。

引用此