不同品种对羊肉中亚麻酸与花生四烯酸含量的影响.docVIP

不同品种对羊肉中亚麻酸与花生四烯酸含量的影响罗玉龙，(杨晶，刘夏炜，靳志敏，段艳，靳烨* （内蒙古农业大学食品科学与工程学院,内蒙古呼和浩特,010018） 摘 要：通过选择5月龄苏尼特羊、小尾寒羊及巴寒F2 各5只，每只羊就其背最长肌，股二头肌、臂三头肌个部位用气相色谱法测定其脂肪酸含量，来进一步研究不同品种不同部位羊肉亚麻酸与花生四烯酸的含量，阐明品种及部位对羊肉中亚麻酸与花生四烯酸含量的影响。结果表明：品种和部位都对羊肉中亚麻酸与花生四烯酸的含量有一定影响，小尾寒羊背最长肌部位的亚麻酸含量最高；同一品种，背最长肌部位花生四烯酸含量显著高于其他部位。不同品种的羊，苏尼特羊的花生四烯酸含量高于小尾寒羊和巴寒F2，综合比较得出苏尼特羊背最长肌部位的花生四烯酸含量最高。以这种酸作为评价羊肉营养价值的标准时，苏尼特肉质较小尾寒羊和巴寒F2好，其中背最长肌肉质为最佳。 关键词：苏尼特羊,小尾寒羊,巴寒F2, α-亚麻酸,γ-亚麻酸,花生四烯酸. Study on the Linolenic Acid and Arachidonic Acid Content in different Breeds of Sheep LUO Yu-long.YANG Jing.LIU Xia-wei.JIN Zhi-min.DUAN Yan.JIN Ye* (College of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot 010018, Inner Mongolia，China ) Abstract：Linolenic acid and Arachidonic acid content of biceps femoris, triceps brachii and longissimus dorsi from 5 months Sunit sheep,Small tailed han sheep and Bahan F2 sheep were detected by gas chromatography to explore the effect of breeds and anatomical locations.The results showed breeds and anatomical locations had significantly influence on Linolenic acid and Arachidonic acid content.content of Linolenic acid was the highest in the longissimus muscles of Small tailed han sheep;In the same breed, Arachidonic acid content in the longissimus dorsi Significantly higher than other anatomical locations. In the different breeds, content of Arachidonic acid in sunit sheep was higher than other breeds. Compared comprehensively, content of Arachidonic acid in the longissimus dorsi of sunite lamb was the highest. As the standard evaluation of mutton nutrition value,meat of Sunite was the better than meat of Small tailed han sheep and Bahan F2 sheep ,the longissimus dorsi of Sunite was best. Key words:Sunit sheep;Small tailed han sheep; Bahan F2 sheep;α-Linolenic acid ;γ-Linolenic acid;Arachidonic acid 小尾寒羊素以繁殖性能好、体格高大、生长发育快、肉用性能好、适应性和抗病性强等优良种质特性而著称于世[1]。苏尼特羊具有体质结实、高瘦肉率、高蛋白、低脂肪、肌间脂肪分布均匀等特点[2]。巴美肉羊体型较大，体质结实，结构匀称，且具有早熟性，是内蒙古自治区必威体育精装版培育出的肉羊品种[3-5]。巴寒F2是巴美肉羊与小尾寒羊的杂交后代，本以巴寒F2作为研究对象之一。 α-亚麻酸是维