紫苏籽油理化性质测定及脂肪酸组分分析_许万乐（GC） . Determination of Physicochemical Properties and Analysis on Fatty Acid Composition of Different Perilla Seed Oil

Abstract

Sensory indicators and physicochemical properties of perilla seed oil from 9 different varieties were studied in the paper with their fatty acid compositions being determined further. The results showed that saponification number of 9 varieties changed from 199. 530 to 214. 908 mg / g while no significant differences had been extended. However,there were significant variations in other physicochemical properties among varieties; the relative density ranged from 0. 887 to 0. 942,smoking point from 202 to 250 ℃,the content of moisture and volatile matter from 0. 046% to 0. 072%,acid value from o. 405 to 1. 416,iodine value from 160. 330 to 198. 575,peroxide value from 1. 052 to 2. 718. For perilla seed oil,total unsaturated fatty acid was of a range from 92. 83% to 93. 96% with linole-nic acid from 57. 67% to 69. 35%. ZB-1 was the most suitable as edible oil due to its stable color,lower smoke point,little moisture and volatile matter and strong antioxidant; while ZB-2 with high linolenic acid content and strong antioxidant was good material for breeding linolenic acid-rich variety.