基于色差识别分析的灰枣不同贮藏期质量评价  

Quality Evaluation of Jujube in Different Storage Periods Based on Color Difference Identification Analysis

作　　者：潘少香[1] 郑晓冬[1] 闫新焕[1] 刘雪梅[1] 谭梦男 曹宁 王华 宋烨[1] PAN Shaoxiang;ZHENG Xiaodong;YAN Xinhuan;LIU Xuemei;TAN Mengnan;CAO Ning;WANG Hua;SONG Ye(Ji’nan Fruit Research Institute,China Supply and Marketing Cooperatives,Shandong Province Fruit and Vegetable Storage and Processing Technology Innovation Center,Ji’nan 250014,China;Beijing Jingdong Qianshi Technology Company Limited,Beijing 102600,China)

机构地区：[1]中华全国供销合作总社济南果品研究院,山东省果蔬贮藏加工技术创新中心,山东济南250014 [2]北京京东乾石科技有限公司,北京102600

出　　处：《食品科技》2023年第3期30-34,共5页Food Science and Technology

基　　金：泰山学者青年专家项目(2022012)。

摘　　要：为建立一种基于灰枣果皮色差识别的灰枣质量评价方法,采用色差仪测定灰枣果皮的L*值、a*值、b*值,并计算色度值、色调值、色光值,利用显著性差异分析和主成分分析2种方法分析不同等级灰枣色差指标的差异性。以果皮颜色人工感官分级结果为基础,利用逐步判别分析建立了灰枣质量判别的果皮色差模型,交叉验证准确率为99.7%。采用果皮色差逐步判别模型对不同贮藏期灰枣进行质量评价,结果表明随着贮藏时间延长,果皮褐变逐渐加重,贮藏4年的灰枣三级枣变色比例达85%,二级枣比例为15%,基本失去商品价值。研究通过建立果皮色差逐步判别模型,为灰枣质量评价,特别是贮藏期质量评价,提供了一种快速便捷的有效方法。In order to establish a quality evaluation method based on the color difference identification of grey jujube,this experiment used the difference significance analysis and principal component analysis(PCA)to analyze the differences of the L*,a*and b*values,chroma,hue,brightnes of the grey jujube peel detected by colorimeter.Based on the results of artificial sensory classification of fruit peel color,the color difference model of fruit peel was established by stepwise discriminant analysis,and the cross-validationaccuracy was 99.7%.The quality evaluation of gray jujube in different storage periods was carried out by the stepwise discriminant model of peel color difference.The results showed that with the extension of storage time,the browning of fruit peel gradually aggravated,and the discoloration proportion of thirdgrade jujube and second-grade jujube in storage for 4 years reached 85%and 15%,and the commodity value was basically lost.In this study,a rapid,convenient and effective method was established to evaluate the quality of jujube,especially during storage period,by establishing a stepwise discrimination model for peel color difference.

关 键 词：灰枣 色差 逐步判别分析 贮藏期质量评价 

分 类 号：TS255.3[轻工技术与工程—农产品加工及贮藏工程]