【摘要】 为研究紫茎泽兰(Ageratina adenophora)对建昌黑山羊肌肉中氨基酸和脂肪酸含量的影响,本研究采用氨基酸自动分析仪和氯仿–甲醇抽提法,对自然放牧采食紫茎泽兰的建昌黑山羊背最长肌中氨基酸、脂肪酸含量进行测定分析。结果显示,与对照组比较,建昌黑山羊肌肉必需氨基酸(essential amino-acid, EAA)、非必需氨基酸(non-essential amino acid, NEAA)和总氨基酸(total amino acid, TAA)含量减少,风味氨基酸含量减少;饱和脂肪酸(saturated fatty acid,SFA)含量减少,单不饱和脂肪酸(monounsaturated fatty acid, MUFA)、多不饱和脂肪酸(polyunsaturated fatty acids, PUFA)和不饱和脂肪酸(unsaturated fatty acid, UFA)含量增加,UFA/SFA (U/S)值升高,与膻味呈正比的脂肪酸含量升高,与膻味呈反比的脂肪酸含量减少,说明紫茎泽兰降低了肉品的氨基酸营养价值,增加了肉品的脂肪酸营养价值,对肉品风味有一定影响。研究表明,紫茎泽兰饲喂反刍动物,具有一定的营养价值,但紫茎泽兰的毒性使动物肌肉脂肪酸和氨基酸含量发生变化,降低了肉品品质。更多还原

【Abstract】 This study aimed to examine the effects of Ageratina adenophora on amino acid and fatty acid contents in the muscles of Jianchang black goats. Jianchang black goats were fed with A. adenophora freely, and the contents of amino and fatty acids in their muscles were analyzed using an automatic amino acid analyzer and the chloroform-methanol extraction method, respectively. The contents of essential amino acids, non-essential amino acids, total essential amino acids, and flavor-related amino acids in the muscles of Jianchang black goats fed with A. adenophora decreased compared with the control group. At the same time the content of saturated fatty acid(SFA) decreased, while the content of monounsaturated fatty acid, polyunsaturated fatty acid, and unsaturated fatty acid(UFA) increased, and the UFA/SFA(U/S) ratio increased.The fatty acids that are proportional to the smell of mutton increased, and those that were inversely proportional to the smell of mutton decreased, indicating that A. adenophora reduced the nutritional value of amino acids and improved the nutritional value of fatty acids in meat, which had a certain effect on the flavor of meat. The results showed that A. adenophora fed ruminants had certain nutritional value, but the toxicity of A. adenophora changed muscle fatty acid and amino acid contents,which decreased the meat quality.更多还原