部分家禽肉肌内脂肪及脂肪酸含量的测定与分析

Measurement and Analysis of Intra-Muscle Fat and Fatty Acid in Poultry Meat

采用索氏抽提法对几种禽肉的肌内脂肪进行测定,结果显示,禽肉的肌内脂肪含量均为腿肉高于胸肉,其中鸡肉差异极显著(P<0.01),鸭肉的腿肉与胸肉含量差异不明显;在华都黄鸡中腿肉含量是胸肉含量的2～4倍.气相色谱法对脂肪酸分析结果表明,鸭肉脂肪酸含量是鸡肉的2倍多,其中以软脂酸、硬脂酸、油酸、亚油酸和花生四烯酸为主,占脂肪酸质量分数的88%～94%;特别是北京鸭、樱桃谷鸭与华都黄鸡含有少量A A鸡所没有的共轭亚油酸(C18∶2,t9,t11).

The intra-muscle fat content of poultry was determined by Soxhlet method. The results showed that, the intra-muscle fat contents in leg are higher than that of breast for poultry meat, particularly, significant difference (P<0.01)were observed for chickens. For Huadu Huang chickens, the intra-muscle fat contents in leg are 2 to 4 times higher than those of breast. The fatty acid content of poultry was analyzed by GC method. The results showed that the fatty acid content of ducks were 2 times higher than that of chicken, with C16∶0,C18∶0,C16∶1,C18∶2 and C18∶3 as the major contents of the fatty acids, which occupied 88%～94% in total. The conjugated linoleic acid(CLA, C18∶2,t9,t11), which was not detected in the volatiles of A-A chicken, was found to be present in Beijing ducks, Cherry Valley ducks, Huadu Huang chickens.