STUDIES ON THE CHEMICAL COMPONENTS AND CHARACTERISTICS OF GRAPE SEED OIL AND CAKE

This paper reports the nutritive value and characteristics of grape seeds oil in which contents of crude proteins,fats and fibers are respectively 8.4%, 15.0% and 37.2%. It is found that grape seeds contain significant elements, such as Ca, Mg and K The content of unsaturated fatty acids is 89.6%, in which the content of predominate linoleic acid is 72—76%. The iodine value, saponification number and acid value of grape seed oil are 138.3, 191.5 and 1.68, respectively. Grape seeds account for 20—26% of the leftovers in wineries. Recovering and using the leftovers not only can decrease the environmental pollution but also increase the social and economic benefit.