Effect of Rutin in Buckwheat Noodle on Lipid Metabolism in Rats

This study was performed to examine the effect of rutin in buckwheat noodle on lipid metabolism in rats fed a high-fat, high-sucrose diet. Buckwheat noodles were prepared by traditional Japanese methods, and the experimental diets contained 40% dried buckwheat noodle powder. In experiment 1, rats from CLEA were fed Control (0), Low-rutin (182), Medium-rutin (385), High-rutin (980 mg rutin/100 g) or Catechin (352 mg catechin/100 g) diet for 3 weeks, and in experiment 2, rats from Charles River Laboratories were fed Control or High-rutin diets for 4 weeks. Results indicated that serum total cholesterol level in Medium- and High-rutin groups and the level of free fatty acids in the High-rutin group were significantly lower than that in the Control group (experiment 1). The former result was shown to be reproducible in experiment 2. These results suggested that the rutin in buckwheat noodle has beneficial effects on lipid metabolism.