宁夏盐池天然草地牧草脂肪酸的组成及含量

Components and contents of fatty acids of four grasslands in Yanchi,Ningxia

试验采用气相色谱法，测定宁夏盐池4种草地混合牧草的脂肪酸组成。结果显示，5月混合牧草脂肪酸有30～34种，10月有29～34种。5月混合牧草饱和脂肪酸占26．80％～42．87％，单不饱和脂肪酸占15．56％～24．54％，多不饱和脂肪酸占36．71％～56．95％；影响滩羊肉品质的短链脂肪酸为0．46％～0．79％，硬脂酸为2．26％～7．58％。10月混合牧草饱和脂肪酸为22．51％～33．46％，单不饱和脂肪酸占13．65％～27．15％，多不饱和脂肪酸占46．70％～60．91％。研究表明，影响滩羊肉品质的短链脂肪酸和硬脂酸含量相对较低，多不饱和脂肪酸的含量相对较高。

The composition of fatty acids in the mixed pasture grasses of Ningxia pond was determined using gas chromatography. In the mixed pasture, there were 30-34 fatty acids in May and there were 29-34 fatty acids in October. The percentage of saturated fatty acids, single unsaturated fatty acids and polyunsaturated fatty acids in total fatty acids in the mixed pasture in May was 26. 80% - 42. 87%, 15.56%-24. 54%and 36. 71%-56. 95%, respectively. Short chain fatty acids and satiric acid which influence local lamb meat quality only accounted for 0.46%-0.79X and 2.26%-7.58%, respectively. The percentage of saturated fatty acids, single unsaturated fatty acids and polyunsaturated fatty acids in total fatty acids in the mixed pasture in October was 22.51%-33.46%, 13.65%-27.15% and 46.70%- 60.91%, respectively. The research indicated that there are more polyunsaturated fatty acids and less short chain fatty acid and satiric acid in the mixed pasture.