基于主成分分析的荔枝罐藏品种筛选与品质评价OA

The selection of raw material varieties is a critical in determining the quality and market competitiveness of canned lychee.To address the lack of systematic and multidimensional comprehensive evaluation standards for the se-lection of lychee varieties suitable for canning,this study prepared canned lychee using eight main cultivated varieties as raw materials and systematically measured 16 key quality indicators,including chromaticity,sugar-acid components and texture characteristics.Principal component analysis(PCA)was employed to construct a comprehensive evaluation model for the suitability evaluation of lychee for canning.The results showed significant differences in quality indica-tors among different varieties.PCA extracted three principal components,with a cumulative variance contribution rate of 83.180%.Based on the comprehensive scores from the principal components,the ranking of varieties from best to worst was Ziniangxi>Xiantaoli>Jumeiren>Baitangying>Huaizhi>Heiye>Feizixiao>Baila.The Pearson correlation analysis further indicated that chewiness was extremely significantly positively correlated with elasticity and cohesive-ness,while the sugar-acid ratio showed a significant positive correlation with the L* value.Cluster analysis categorized the eight varieties into three characteristic groups,with significant differences in texture,color and sugar-acid composi-tion among the groups,providing a basis for the classification and utilization of varieties.The study systematically elu-cidates the canned quality characteristics of different lychee varieties.The established PCA evaluation model would enable rapid and objective screening of varieties.The varieties Ziniangxi,Xiantaoli and Jumeiren were identified as high-quality varieties specifically suited for canning,with large fruit characteristics,excellent texture properties,and balanced sugar-acid ratios forming an ideal quality combination.The findings would provide a solid theoretical basis and technical support for the directional selection of raw materials,precise quality control,and the breeding of special-ized varieties in the lychee canning industry.