GC-MS法测定宣威火腿中脂肪酸组成

摘要

The fatty acid composition of intramuscular fat and subcutaneous fat in Xuanwei ham by GC-MS was studied. The results showed that Xuanwei ham contained 11 kinds of saturated fatty acids (SFA) and 15 kinds of un- saturated fatty acid (UFA). The relative percentage of SFA in intramuscular and subcutaneous fat was 34.75% and 36.23% , respectivelyl However, the relative percentage of UFA in intramuscular and subcutaneous fat was 6 4.78% and 63.47% , respectively. The main fatty acids in intramuscular fat and subcutaneous fat were oleic acid ( C18:1 ) , palmitic acid (C16:0), stearic acid (C18: 0) and linoleic acid (C18: 2). The relative percentages of above fatty acids in intramuscular fat were 33.44% , 23.37% , 8.44% and 20.55% , respectively. While, the relative percenta- ges of above fatty acids in subcutaneous fat were 31.47% ,21.90% ,11.13% and 22.39% respectively.%以宣威火腿为对象，通过提取成熟宣威火腿的肌间脂肪和皮下脂肪，采用气相色谱．质谱联用法（GC—MS）对宣威火腿肌间脂肪与皮下脂肪中脂肪酸的组分进行探讨。结果表明：宣威火腿肌间脂肪中含11种饱和脂肪酸，占总脂肪酸的34．75％，15种不饱和脂肪酸，占总脂肪酸含量的64．78％，主要的脂肪酸为油酸（C18：1）、棕榈酸（C16：0）、硬脂酸（C18：0）、亚油酸（C18：2），含量分别为33．44％、23．37％、8．44％、20．55％；皮下脂肪中含11种饱和脂肪酸，占总脂肪酸的36．23％，15种不饱和脂肪酸，占总脂肪酸含量的63．47％，主要的脂肪酸为油酸（C18：1）、棕榈酸（C16：0）、硬脂酸（C18：0）、亚油酸（C18：2）．含量分别为31．47％、21．90％、11．13％、22．39％．