Effects of Different Fractions of Barley Bran onGastrointestinal
Function and Lipid Metabolism in Rats Jun SHIMIZU1, KohjiTAMAGAWA2, Akio IKEDA2, KeitaNAGANUMA2,
Masahiro WADA1, Toshichika TAKITA1, andSatoshi INNAMI1 1Faculty of Applied Bio-Science, Tokyo University ofAgriculture
2Research and Development Center, Hakubaku Co.,Ltd. | To evaluate the effects of two different fractionsof barley bran on gastrointestinal function and lipid metabolism,five weeks old male Sprague-Dawley rats were fed diets containingcellulose powder (control), wheat bran (WB), outer layer of barleybran (BB-30) and inner layer of barley bran (BB-60) at 5% dietaryfiber level for 4 wks. An increase of cecal weight, a lowered pH ofcecal contents and a shortening of gastrointestinal transit time inthe BB-60 group were significant in comparison with those in theother three groups, respectively. Fecal moisture and butyric acidproduction in cecal contents of the BB-60 group were significantlyhigher than those of the BB-30 group. The hepatic cholesterol andtriacylglycerol concentrations in the bran-fed groups weresignificantly higher or higher tendency than those in the controlgroup. These results suggest that BB-60 is different from BB-30 andrather similar to WB on some aspects of gastrointestinal functions,and this phenomenon may be attributed to the difference of dietaryfiber composition. |
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