上海地产猪肉品质主要评价指标的筛选及分级标准的建立

Screening of main evaluation indexes and establishment of grading standards for pork quality in Shanghai

中文关键词:  猪肉,聚类分析,层次分析,品质评价模型,分级评分标准

英文关键词:pork  cluster analysis  hierarchical analysis  quality evaluation model  grading and scoring criteria

中文摘要:

      目的 对猪肉分等分级和优质优价构建合理的猪肉品质评价体系。方法 本研究以市面常见杜长大三元杂交猪为对照, 采集中国上海地产7种猪背最长肌进行肉质外观、质构、营养、风味物质等各项指标测定, 并确定地产猪肉品质的13项主要评价指标。为进一步构建上海地产猪肉品质分级标准, 应用因子分析、聚类分析、层次分析建立综合评价体系。结果 通过因子分析, 在选定的13项指标中确定7项指标(水分含量、电导率、剪切力、铁、脂肪、肌苷酸和天冬氨酸)作为主因子, 其方差贡献率高达83.829%。利用聚类分析及层析分析, 按照所得的7个品质指标建立3个不同等级的评分标准。结论 本研究建立上海地区完整的猪肉品质评价模型和分级评分标准, 实现了上海地区猪肉品质的精准把控, 也为地方猪肉品质评价提供了借鉴。

英文摘要:

      Objective To construct a reasonable pork quality evaluation system for pork grading and high quality and high price. Methods In this study, the common Dugong three-dimensional hybrid pigs were used as the control, and the longest back muscles of 7 kinds of pigs from Shanghai were collected for the determination of various indexes such as meat appearance, texture, nutrition and flavor substances, and 13 main evaluation indexes of pork quality in the real estate were determined. In order to further construct the grading standard of Shanghai real estate pork quality, factor analysis, cluster analysis and hierarchical analysis were applied to establish a comprehensive evaluation system. Results Through factor analysis, 7 indicators (moisture content, electrical conductivity, shear force, iron, fat, inosinic acid and aspartic acid) were identified as the main factors among the selected 13 indicators, and their variance contribution rate was as high as 83.829%. Using cluster analysis and chromatographic analysis, 3 different grades of scoring criteria were established according to 7 quality indicators obtained. Conclusion This study establishes a complete pork quality evaluation model and grading criteria in Shanghai, realizes the accurate control of pork quality in Shanghai, and also provides a reference for local pork quality evaluation.