绵羊乳脂肪酸组成分析与评价

doi:10.7506/spkx1002-6630-20191024-257

食品科学 ›› 2020, Vol. 41 ›› Issue (22): 260-264.doi: 10.7506/spkx1002-6630-20191024-257

绵羊乳脂肪酸组成分析与评价

王海燕，葛武鹏，马筱怡，宋宇轩，赵丽丽，张艳，王雨馨

（1.西北农林科技大学食品科学与工程学院，陕西杨凌 712100；2.西北农林科技大学动物科技学院，陕西杨凌 712100；3.陕西省羊乳产品质量监督检验中心，陕西富平 711700；4.陕西中检检测技术有限公司，陕西西安 710068）

出版日期:2020-11-25 发布日期:2020-11-26
基金资助:
陕西省创新能力支撑计划项目（2017XY-02）；西北农林科技大学金昌奶绵羊试验示范基地建设项目（A289021806）

Analysis and Evaluation of Fatty Acid Composition of Sheep Milk

WANG Haiyan, GE Wupeng, MA Xiaoyi, SONG Yuxuan, ZHAO Lili, ZHANG Yan, WANG Yuxin

(1. College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China;2. College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China; 3. Shaanxi Goat Milk Product Quality Supervision and Inspection Center, Fuping 711700, China; 4. Shaanxi Zhongjian Test Technology Co. Ltd., Xi’an 710068, China)

Online:2020-11-25 Published:2020-11-26

摘要/Abstract

摘要： 采用气相色谱法对不同泌乳期的湖羊、东佛里生羊、东湖杂交一代羊乳的脂肪酸种类和含量进行比较分析，同时以山羊乳、人乳为对照，评价绵羊乳脂肪酸组成。结果表明，3 种绵羊乳脂肪酸主要由油酸（C18:1 cis）、棕榈酸（C16:0）、硬脂酸（C18:0）和肉豆蔻酸（C14:0）组成，其油酸（C18:1 cis）相对含量显著高于山羊乳（P＜0.05），棕榈酸（C16:0）相对含量显著高于人乳（P＜0.05）。东湖杂交一代绵羊乳的单不饱和脂肪酸、多不饱和脂肪酸相对含量均显著高于山羊乳（P＜0.05），属于优质动物脂肪来源。绵羊乳脂肪酸组成相对含量随泌乳周期变化而变化。聚类分析表明，绵羊乳与山羊乳脂肪酸组成较为相似，东佛里生羊乳与东湖杂交一代羊乳脂肪酸组成接近。

关键词: 绵羊乳；脂肪酸；泌乳期；气相色谱

Abstract: The aim of this study was to characterize the fat acid profiles of Hu sheep milk, East Friesian sheep milk and Hu × East Friesian crossbred F1 sheep milk at different lactation stages by gas chromatography. Goat milk and human milk were used as the controls to evaluate the fatty acid composition of sheep milk. The results showed that sheep milk fat was mainly composed of oleic acid (C18:1 cis), palmitic acid (C16:0) stearic acid (C18:0) and myristic acid (C14:0). The proportion of oleic acid (C18:1 cis) in sheep milk was significantly higher than that in goat milk (P < 0.05), and the proportion of palmitic acid (C16:0) was significantly higher than that in human milk (P < 0.05). The proportions of monounsaturated fatty acids (MUFA) and polyunsaturated fatty acids (PUFA) in Hu × East Friesion crossbred F1 sheep milk were significantly higher than those in goat milk (P < 0.05), implying that the former is a good source of high-quality animal fat. The proportion of fatty acids in sheep milk varied during lactation. According to the cluster analysis, the fatty acid composition of sheep milk was similar to that of goat milk. East Friesian sheep milk was similar in fatty acid composition to Hu × East Friesian crossbred F1 sheep milk.

Key words: sheep milk; fatty acids; lactation stages; gas chromatography

中图分类号:

TS252.1

王海燕，葛武鹏，马筱怡，宋宇轩，赵丽丽，张艳，王雨馨. 绵羊乳脂肪酸组成分析与评价[J]. 食品科学, 2020, 41(22): 260-264.

WANG Haiyan, GE Wupeng, MA Xiaoyi, SONG Yuxuan, ZHAO Lili, ZHANG Yan, WANG Yuxin. Analysis and Evaluation of Fatty Acid Composition of Sheep Milk[J]. FOOD SCIENCE, 2020, 41(22): 260-264.

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绵羊乳脂肪酸组成分析与评价

Analysis and Evaluation of Fatty Acid Composition of Sheep Milk

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