食品与发酵工业2024，Vol.50Issue(14)：280-289,10.DOI:10.13995/j.cnki.11-1802/ts.036411
基于主成分分析和聚类分析麝香草酚微胶囊/魔芋葡甘露聚糖/低酰基结冷胶可食性复合涂膜对蓝莓品质的综合评价
Comprehensive evaluation of edible composite coatings with thymol microcapsule/konjac glucomannan/low-acyl gellan gum on blueberry quality based on principal component analysis and cluster analysis
摘要
Abstract
The study aimed to establish a comprehensive method to evaluate the effects of thymol microcapsules/konjac glucomannan/low acyl gellan gum(TKL)edible composite coating on postharvest quality of blueberry.The late-ripening variety Baldwin was used as the test material.Based on the sensory,physiological and biochemical,nutrient,color,and texture perspectives,representative indicators were selected to comprehensively evaluate the effect of TKL preharvest spraying on blueberry quality using principal component analysis(PCA),cluster analysis,and correlation analysis.Results showed that the TKL coating treatment slowed down the decrease in sensory,fruit shape index,titratable acid,hardness,L*,b*,H*,and springing during storage of blueberry,reduced the increases in weight loss ratio,decay rate,malondialdehyde,and C*,and increased the contents of soluble solid,chewiness,resilience,total phenols,total fla-vonoids,and anthocyanidin.The TKL coating effectively slowed down the deterioration of blueberry quality.PCA analysis obtained 2 prin-cipal components with a cumulative variance contribution of 86.90％.The fitting of PCA scores with sensory values was an extremely sig-nificant positive correlation(P＜0.01).Cluster analysis indicated that the blueberry quality of TKL coating treatment at 21-56 days was in the same category as the control at 7-35 days.Correlation showed that PCA scores were extremely significant and positively correlated with sensory evaluation(P＜0.01).Cluster analysis showed that the quality of blueberry by TKL coating at 21-56 days was the same as that of the CK group at 7-35 days.The TKL coating treatment extended the storage period of Baldwin blueberry from 42 days to 63 days.The combination of PCA and cluster analysis could more scientifically,systematically,and accurately evaluate the effect of TKL coating on the postharvest preservation of blueberries,providing a theoretical basis for the application of TKL coating on postharvest fruit preserva-tion.关键词
可食性涂膜/PCA分析/聚类分析/综合评价/品质/蓝莓Key words
edible coating/principal component analysis/cluster analysis/comprehensive evaluation/quality/blueberry引用本文复制引用
黄彭,丁捷,李昕谕,张林,秦文..基于主成分分析和聚类分析麝香草酚微胶囊/魔芋葡甘露聚糖/低酰基结冷胶可食性复合涂膜对蓝莓品质的综合评价[J].食品与发酵工业,2024,50(14):280-289,10.基金项目
四川省科技计划项目(2021JDRC0030) （2021JDRC0030）
四川省科技计划项目(2021YJ0262) （2021YJ0262）
宜宾学院高层次人才项目(2023QH09) （2023QH09）
