摘要
欧拉型藏羊是生长在青藏高原的肉用羊,具有独特的耐高寒低氧属性。本研究对1.0～1.5岁龄的欧拉型藏羊背最长肌的理化特性和近红外光谱特性进行分析,发现其蛋白质和肌内脂肪含量分别高达24.18%和2.05%,剪切力为40.92N,总体品质较好;欧拉型藏羊背最长肌近红外原始光谱在1180、1450nm有吸收峰,一阶求导可以对原始数据进行有效处理,经一阶求导后近红外光谱在1380nm处有明显峰值特征。研究结果表明,欧拉型藏羊肉有良好的食用和加工价值,其特定理化特性导致其出现独特的近红外光谱特性。
Oula Tibetan sheep is a mutton sheep that lives on the Qinghai-Tabet Plateau and has an excellent tolerance to high cold and anoxia. In this study, longissimus dorsi muscles of Oula Tibetan sheep （1 to 1.5 years old） were analyzed for physiochemical properties and characterized by near infrared （IR） spectroscopy. The contents of protein and intramuscular lipid were 24.18% and 2.05%, respectively, the shear force was 40.92 N, and the overall quality was considered as good. Original near infrared spectra of longissimus dorsi muscles revealed two absorption peaks, at 1180 nm and 1450 rim, respectively. First derivation allowed effective processing of original specteral data. Processed near infrared spectra displayed an obvious absorption peak at 1380 nm. The results deomonstrated that Oula Tibetan sheep meat has excellent eating and cooking quality, which corresponds to its unique near infrared spectroscopic characteristics.
出处
《肉类研究》
2012年第9期1-4,共4页
Meat Research
基金
国家公益性行业(农业)科研专项(201203009
200903043)
国家现代肉羊产业技术体系项目(CARS-39)
关键词
欧拉型藏羊
理化特性
近红外光谱
背最长肌
Oula Tibetan sheep
physiochemical properties： near infrared spectroscopy： longissimus muscle
