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http://dx.doi.org/10.3746/jkfn.2012.41.4.487

Effect of Diets with Red Yeast Sweet Potato Powder Supplement on Fecal Amount and Lipid Metabolism in Rats Fed a High-fat Diet  

Park, Ju-Hun (Korea Food Research Institute)
Choi, Sang-Yoon (Korea Food Research Institute)
Lee, Kyung-Won (Korea Food Research Institute)
Kim, Sung-Soo (Korea Food Research Institute)
Cho, Kyung-Dong (Food One Tech Inc.)
Han, Chan-Kyu (Korea Food Research Institute)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.41, no.4, 2012 , pp. 487-493 More about this Journal
Abstract
This study was performed to investigate the effects of a diet with a red yeast sweet potato supplement on fecal amount and lipid metabolism in male Sprague-Dawley rats fed a high-fat diet for 10 weeks. Rats were fed a high-fat diet (15% fat) with additional lard (7%) and cholesterol (1%) based on AIN-93G basal diet (7% fat) for 6 weeks during the first phase. In the second phase, which lasted 4 weeks, the rats divided into four experimental groups which were composed of a high-fat diet group as a control (CON), a high-fat diet with 5% white-fleshed sweet potato supplement group (WFSP), a high-fat diet with 5% red yeast sweet potato supplement group (RYSP), and a high-fat diet with 5% purple-fleshed sweet potato supplement group (PFSP). The fecal amount of group RYSP increased significantly during the second phase compared to the other groups (p<0.05). The fecal total cholesterol (TC) and triglyceride (TG) content of group RYSP were also highest among all experimental groups. The serum TC and TG were shown to have the lowest levels in the group RYSP, and LDL-cholesterol levels were significantly decreased in groups RYSP and PFSP than in group CON (p<0.05). These results indicate that supplementation with red yeast sweet potato seemed to be effective in increasing feces and fecal lipid excretion, and also in decreasing serum lipid levels in rats fed a high-fat diet.
Keywords
red yeast; sweet potato; fecal lipid; cholesterol; triglyceride;
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