Forty adult rats were used in an experiment to evaluate the effect of feeding a high viscosity barley milling fraction on plasma and liver lipids and intestinal content viscosity. Shonkin barley was milled into 14 fractions utilizing an 8-roller dry mill. The fraction selected for this experiment was classified as break shorts containing 8.4% β-glucan. Rats were randomly allotted to diets containing 0.5% cholesterol and barley shorts at either 0% (control), 30, 60, or 90% of the diet. Experimental duration was 21 d at which time rats were sacrificed, small intestine contents removed and viscosities determined. The animals were not fasted prior to sacrifice. Response criteria measured were plasma lipids and glucose, liver lipids, wet digesta weight and viscosity of intestinal contents. Plasma lipids and glucose were not different (P > .05) for rats fed any of the diets. There were no differences in liver weights among groups. Rats fed different levels of shorts had significantly lower (P<0.05) liver cholesterol than those fed the control diet. Liver triacylglycerol was higher (P<0.05) in rats fed the control diet compared to rats fed other diets. Wet digesta weight was higher in rats fed different levels of shorts compared to those fed the control diet, and increased with increasing levels of shorts in the diet. Viscosity of intestinal contents increased (P < .05) when rats were fed increasing levels of break shorts. These data indicate that consumption of a high viscous barley milling fraction by rats may contribute to increased viscosity in the small intestine contents and is associated with lower liver lipid levels.
Nutrition Research – Elsevier
Published: Mar 1, 1997
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