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| Analysis and Evaluation of Nutritional Components of By-Products of Small-Tailed Han Sheep in Xilingol League, North China’s Inner Mongolia |
| ZHANG Fengmei, Lü Nan, GERELTU, SHUANG Quan |
| 1.College of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China; 2.Grassland Red Sun Food Co. Ltd., Hohhot 010080, China |
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Abstract 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.
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2020, Vol. 34 
