锡盟地区小尾寒羊副产物营养成分分析与评价

Analysis and Evaluation of Nutritional Components of By-Products of Small-Tailed Han Sheep in Xilingol League,North China’s Inner Mongolia

以锡盟地区小尾寒羊的心、肝、脾、肺、肾、大肠、小肠、胃(瘤胃、网胃、瓣胃、皱胃)及血液等副产物为研究对象,对其常规营养成分、氨基酸、脂肪酸以及矿物质含量进行分析与评价。结果表明:锡盟地区小尾寒羊各副产物营养成分含量(鲜质量分数)为水分含量68.86%~83.62%、蛋白质含量11.10%~19.92%、脂肪含量0.19%~16.93%、灰分含量0.45%~3.82%;各副产物经酸水解处理后测定,含天冬氨酸、亮氨酸、赖氨酸等17种氨基酸,其中包含人体必需的7种氨基酸,必需氨基酸占氨基酸总量的34.44%~44.35%,且谷氨酸、天冬氨酸、亮氨酸等含量丰富;各副产物中不饱和脂肪酸含量(除羊血8.26%外)为35.56%~56.09%,其中以单不饱和脂肪酸为主,网胃、瓣胃、皱胃、大肠、小肠中油酸含量均在30%以上,且网胃、肝脏、肺脏中亚油酸含量较高;各副产物中含有多种微量元素,其中脾脏中K和Fe含量最高,4个胃中Ca含量均较高。

The proximate nutrient,amino acid,fatty acid and mineral compositions of by-products of small-tailed Han sheep in Xilingol League,Inner Mongolia,China including heart,liver,spleen,lung,kidney,large intestine,small intestine,stomachs(rumen,reticulum,omasum and abomasum),and blood were analyzed and evaluated.The results showed that the by-products contained 68.86%–83.62%water,11.10%–19.92%protein,0.19%–16.93%fat and 0.45%–3.82%ash on a wet basis.A total of 17 amino acids including aspartic acid,leucine and lysine were produced from acid hydrolysis of the by-products.Seven amino acids were detected in the hydrolysates,together accounting for 34.44%–44.35%of the total amino acids,glutamic acid,aspartic acid and leucine being the major ones.The content of unsaturated fatty acids in blood,8.26%,was much lower than those in the other by-products,35.56%–56.09%,and monounsaturated fatty acids were the major ones.The content of oleic acid in reticulum,omasum,abomasum,large intestine and small intestine was more than 30%,while the content of linoleic acid in reticulum,liver and lung was relatively high.Each by-product contained a variety of microminerals.K and Fe were the most abundant in spleen,whereas the four stomachs were all rich in Ca.