湘西黑猪肌肉蛋白质营养价值评定

发布时间：2018-03-26 18:24

本文选题：营养价值　切入点：氨基酸模式　出处：《家畜生态学报》2017年08期

【摘要】：本研究旨在探究湘西黑猪肌肉蛋白质营养价值,为其今后深加工提供理论依据。基于前人对湘西黑猪新鲜肌肉氨基酸含量的测定结果,采用氨基酸比值系数分(SRC)、氨基酸评分(AAS)、氨基酸比值系数(RC)及必需氨基酸指数(EAAI)等评价指标对湘西黑猪肌肉蛋白质氨基酸模式进行评价,并计算肌肉生长的氨基酸模式。结果表明:脱脂湘西黑猪肌肉中总氨基酸含量高达97.93%;所含的人体必需氨基酸之和占总氨基酸的质量比(E/T)为37.81%,人体必需氨基酸总量与人体非必需氨基酸总量的质量比(E/N)为60.12%;鲜味、甜味和芳香类氨基酸的含量分别29.52%、13.52%和5.65%,风味氨基酸总含量为47.69%,支链氨基酸(缬氨酸、亮氨酸和异亮氨酸)的总含量高达20.71%。比值系数分(SRC)为72.60,必需氨基酸指数58.24;几种人体必需氨基酸中,第一限制氨基酸为蛋氨酸+胱氨酸(Met+Cys),第二限制性氨基酸为苏氨酸。结论:湘西黑猪肌肉必需氨基酸种类齐全,且比例相对均衡,第一限制性氨基酸为缬氨酸,生产实践中应注意添加。
[Abstract]:The purpose of this study was to investigate the nutritional value of protein in the muscle of Xiangxi black pig, and to provide theoretical basis for further processing. Based on the results of the determination of amino acid content in fresh muscle of Xiangxi black pig, The amino acid pattern of muscle protein in Xiangxi Black Pig was evaluated by using amino acid ratio coefficient (SRC), amino acid score (AASA), amino acid ratio coefficient (ACA) and essential amino acid index (EAAII). The results showed that the total amino acid content in the muscle of non-fat Xiangxi black pig was as high as 97.93, and the ratio of essential amino acids to total amino acids was 37.81 and the total amount of essential amino acids in human body was 37.81. The mass ratio of the total amount of non-essential amino acids to the human body is 60.12%. The contents of sweet amino acids and aromatic amino acids were 29.52% and 5.65%, respectively. The total content of flavor amino acids was 47.69. The total content of leucine and isoleucine is as high as 20.71.The ratio coefficient is 72.60, and the essential amino acid index is 58.24. The first limiting amino acid is methionine cystine and the second is threonine. Conclusion: the essential amino acids in the muscles of Xiangxi black pigs are complete, and the proportion is relatively balanced, and the first restricted amino acid is valine. Attention should be paid to addition in production practice.
【作者单位】：铜仁职业技术学院;贵州大学动物科学学院;
【基金】：贵州省农业科技项目(黔科合NZ[2014]3044) 铜仁市科技计划项目(铜市科研[2016]17号-4) 铜仁职业技术学院校级课题(铜职科研[2017])
【分类号】：S828

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