Oat fiber: composition versus physiological function in rats.
Oat fiber: composition versus physiological function in rats.
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DOI：
10.1093/jn/118.2.144
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发表时间：
1988-02
期刊：
影响因子：
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通讯作者：
F. Shinnick;M. Longacre;S. Ink;J. Marlett
中科院分区：
文献类型：
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作者：
F. Shinnick;M. Longacre;S. Ink;J. Marlett
研究了加工对燕麦纤维降低大鼠血浆和肝脏胆固醇浓度的能力的影响。雄性Sprague-Dawley大鼠饲喂含有6%膳食纤维的饲料，如纤维素、燕麦麸皮、高纤维燕麦粉或四种加工的高纤维燕麦粉中的一种，持续3周。所有饲料还含有1.0%胆固醇和0.2%胆酸。最后，测量胆固醇和甘油三酯的血浆和肝脏浓度。所有的燕麦产品都显著降低了血浆和肝脏胆固醇，而没有抑制食物摄入或体重增加。加工燕麦粉中仅含4%的膳食纤维即可显着降低胆固醇浓度。对所有燕麦纤维产品的详细纤维分析表明，加工增加了可溶性总纤维的比例。作为总β-葡聚糖和总中性糖回收的比例也增加，部分原因是除了通过高压挤出工艺制备的燕麦粉之外，在所有加工的燕麦粉中作为Klason木质素回收的比例降低。
The effect of processing on the ability of oat fiber to lower plasma and liver cholesterol concentrations in rats was studied. Male Sprague-Dawley rats were fed diets containing 6% dietary fiber as cellulose, oat bran, high fiber oat flour or one of four processed high fiber oat flours for 3 wk. All diets also contained 1.0% cholesterol and 0.2% cholic acid. At the conclusion plasma and liver concentrations of cholesterol and triglycerides were measured. All of the oat products significantly lowered plasma and liver cholesterol without depressing food intake or weight gain. As little as 4% dietary fiber in a processed oat flour significantly lowered cholesterol concentrations. Detailed fiber analysis of all of the oat fiber products revealed that processing increased the proportion of the total fiber that was soluble. The proportions recovered as total beta-glucans and total neutral sugars also increased, in part because the proportion recovered as Klason lignin decreased in all of the processed oat flours except the one prepared by a high pressure extrusion process.