新疆伽师瓜籽油理化性质及脂肪酸组成分析_张正方 . Fatty acids composition and physicochemical properties of Jiashi melon seeds oil from Xinjiang

Abstract

The Jiashi melon seeds oil was extracted by Soxhlet extraction method with different solvents,and the fatty acids composition of the oil was analyzed by gas chromatography-mass spectrometry(GC-MS).In addition,the physicochemical properties of Jiashi melon seeds oil were also determined.The results showed that the optimal extraction solvent was petroleum ether,and its oil yields was 48.38%,the total unsaturated fatty acids of the oil was 79.73% with linoleic acid being the dominant fatty acid(61.74%).The relative density(d204),refractive index(n20D),acid value,saponification value,iodine value and peroxide value of the Jiashi melon seeds oil were 0.905 8,1.472 8,3.39 mgKOH/g,169 mgKOH/g,115.85 gI/100 g and 5.4 mmol/kg.