Increase in Plasma HDL-Cholesterol Concentration in Goats Fed Sesame Meal Is Related to Ether Extract Fraction Included in the Meal

Y Hirano,K Kita,H Yokota

doi:10.5713/ajas.2003.511

Abstract

Previously, we reported that a diet including sesame meal (SM) increased plasma total and high-density lipoprotein (HDL)-cholesterol concentrations in goats. In the present study, the components in the sesame meal that can increase plasma total and HDL-cholesterol concentrations have been examined. In experiment 1, we gave goats defatted sesame meal diet (DSM) to investigate the influence of ether extract fraction remained in sesame meal. Corn gluten meal diet (CGM) was also fed to goats as a high-protein diet to examine the influence of high dietary protein level caused by usage of sesame meal. Plasma total and HDL-cholesterol concentrations of goats fed DSM and CGM did not change during experimental periods though they were elevated by feeding SM. In experiment 2, the influence of sesame oil and corn oil added in diets on plasma total and HDL-cholesterol concentrations in goats was investigated. Plasma total and HDL-cholesterol concentrations were increased by feeding both corn oil diet and sesame oil diet. In conclusion, the increase in plasma HDL-cholesterol concentration by feeding sesame meal was resulted by the effect of ether extract fraction including sesame oil or some lipid-soluble components remained in sesame meal.

Highlights

IntroductionMATERIALS AND METHODSSesame seed is known as one of healthy diets. There is a considerable studies examining the influence of dietary sesame seed and its ingredients on human health (Yamashita et al, 1992, 1995; Satchithanandam et al, 1993; Kang et al, 1998, 2000)
MATERIALS AND METHODSSesame seed is known as one of healthy diets
Previously, we reported that a diet including sesame meal (SM) increased plasma total and high-density lipoprotein (HDL)-cholesterol concentrations in goats

Summary

Introduction

MATERIALS AND METHODSSesame seed is known as one of healthy diets. There is a considerable studies examining the influence of dietary sesame seed and its ingredients on human health (Yamashita et al, 1992, 1995; Satchithanandam et al, 1993; Kang et al, 1998, 2000). In our previous study, when goats were fed sesame meal which is one of food-industrial by-products derived from sesame oil extraction process, plasma total and HDL-choleterol concentrations gradually and significantly increased (Hirano et al, 2002). It was reported that plasma HDL-cholesterol concentration in ruminants was changed by varying dietary fat and protein levels (Park, 1985; Beynen et al, 2000). To examine the influence of crude fat and protein remained in sesame meal on plasma HDL-cholesterol concentration in goats, we substituted sesame meal, defatted sesame meal and corn gluten meal for a part of concentrate given to goats, and measured the daily change in plasma HDL-cholesterol concentration. We examined the influence of dietary sesame oil supplemented in diets on plasma

Methods

Results

Conclusion