基于主成分分析法分析不同采收期对李果实贮藏品质的影响

TS255.3; 为探究不同采收期对李果实贮藏品质的影响,该研究以'蜜橘'李果实为试验材料,对采后李果实13个品质及生理指标进行分析,结合主成分分析(principal component analysis,PCA)法和数学模型对3个采收期(盛花后100d、盛花后103 d、盛花后106 d)李果实(0±0.5)℃低温贮藏品质进行综合评价.结果表明,在盛花后103 d采收的保鲜效果最好,盛花后103 d采收的李果实至贮藏结束,硬度、TA分别下降了 37.37％、27.06％,下降最慢,相对电导率(relative conductivity,REL)、花青素(anthocya...

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Published in食品工业科技 Vol. 45; no. 16; pp. 272 - 281
Main Authors 李珊珊, 郝义, 张婷婷, 郝邢维, 王锦馨, 周鑫, 李美琳, 周倩
Format Journal Article
LanguageChinese
Published 沈阳农业大学食品学院,辽宁沈阳 110866%辽宁省果树科学研究所,辽宁营口 115009 01.08.2024
Subjects
李果实
evaluation
主成分分析
评价
贮藏品质
plum fruit
harvesting period
principal component analysis
采收期
storage quality
Online AccessGet full text
ISSN1002-0306
DOI10.13386/j.issn1002-0306.2023090093

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Abstract TS255.3; 为探究不同采收期对李果实贮藏品质的影响,该研究以'蜜橘'李果实为试验材料,对采后李果实13个品质及生理指标进行分析,结合主成分分析(principal component analysis,PCA)法和数学模型对3个采收期(盛花后100d、盛花后103 d、盛花后106 d)李果实(0±0.5)℃低温贮藏品质进行综合评价.结果表明,在盛花后103 d采收的保鲜效果最好,盛花后103 d采收的李果实至贮藏结束,硬度、TA分别下降了 37.37％、27.06％,下降最慢,相对电导率(relative conductivity,REL)、花青素(anthocyanidins,AC)、TSS、丙二醛、总酚(total phenols,TP)、类黄酮(flavonoids,FL)变化相对平稳,延缓了呼吸强度的上升,同时能够保持较低的多酚氧化酶(polyphenol oxidase,PPO)活性以及较高的过氧化酶(peroxidase,POD)、过氧化氢酶(catalase,CAT)、超氧化物歧化酶(superoxide dismutase,SOD)活性.经过PCA分析发现PC1、PC2和PC3可以准确地反映出87.472％的信息,这说明不同的采收期会对所有的指标产生重要的影响.通过数学模型分析可知,在盛花后100d、盛花后103 d和盛花后106 d采收的李果实贮藏至56 d时综合得分分别为1.06、0.99和2.69,综合得分越低表明品质越好,因此保鲜效果的排序为盛花后103 d＞盛花后100 d＞盛花后106 d.本研究为李果实采后保鲜和品质综合评价提供理论依据,同时也为实现李果实的适时采收提供技术参数.
AbstractList TS255.3; 为探究不同采收期对李果实贮藏品质的影响,该研究以'蜜橘'李果实为试验材料,对采后李果实13个品质及生理指标进行分析,结合主成分分析(principal component analysis,PCA)法和数学模型对3个采收期(盛花后100d、盛花后103 d、盛花后106 d)李果实(0±0.5)℃低温贮藏品质进行综合评价.结果表明,在盛花后103 d采收的保鲜效果最好,盛花后103 d采收的李果实至贮藏结束,硬度、TA分别下降了 37.37％、27.06％,下降最慢,相对电导率(relative conductivity,REL)、花青素(anthocyanidins,AC)、TSS、丙二醛、总酚(total phenols,TP)、类黄酮(flavonoids,FL)变化相对平稳,延缓了呼吸强度的上升,同时能够保持较低的多酚氧化酶(polyphenol oxidase,PPO)活性以及较高的过氧化酶(peroxidase,POD)、过氧化氢酶(catalase,CAT)、超氧化物歧化酶(superoxide dismutase,SOD)活性.经过PCA分析发现PC1、PC2和PC3可以准确地反映出87.472％的信息,这说明不同的采收期会对所有的指标产生重要的影响.通过数学模型分析可知,在盛花后100d、盛花后103 d和盛花后106 d采收的李果实贮藏至56 d时综合得分分别为1.06、0.99和2.69,综合得分越低表明品质越好,因此保鲜效果的排序为盛花后103 d＞盛花后100 d＞盛花后106 d.本研究为李果实采后保鲜和品质综合评价提供理论依据,同时也为实现李果实的适时采收提供技术参数.
Abstract_FL To examine how different harvesting periods affect the storage quality of'Satsuma'plum fruits,this study analyzed 13 quality and physiological metrics post-harvest and utilized principal component analysis(PCA)and mathematical models to assess(0+0.5)℃ low temperature storage quality across three different harvesting periods(100 d after flowering,103 d after flowering,106 d after flowering).The results showed that harvesting at 103 days after full bloom led to the best preservation effect.Additionally,the hardness and total acidity of plum fruit decreased by 37.37％and 27.06％respectively until the end of the storage period,which was the slowest.Furthermore,changes in relative conductivity,anthocyanins,total soluble solids,malondialdehyde,total phenols,and flavonoids were relatively smooth.The activity of polyphenol oxidase was low,while peroxidase,superoxide dismutase,and catalase activities were high,specifically catalase activities.After conducting PCA analysis,it was determined that PCI,PC2,and PC3 accurately capture 87.472％of the relevant information.These results suggested that varying harvesting periods would have significant impacts on all indicators.The mathematical model analysis revealed that the plum fruits harvested at 100,103,and 106 days after bloom,and stored for 56 days,had comprehensive scores of 1.06,0.99,and 2.69,respectively.Lower comprehensive scores indicated better quality,so the order of preservation effect was as follows:103 days after bloom＞100 days after bloom＞106 days after bloom.The study provides a theoretical framework for evaluating postharvest preservation and quality of plum fruits,along with technical parameters to enable timely harvesting.
Author 张婷婷
李美琳
王锦馨
周鑫
周倩
李珊珊
郝义
郝邢维
AuthorAffiliation 沈阳农业大学食品学院,辽宁沈阳 110866%辽宁省果树科学研究所,辽宁营口 115009
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Author_FL LI Shanshan
ZHANG Tingting
LI Meilin
ZHOU Qian
ZHOU Xin
HAO Xingwei
WANG Jinxin
HAO Yi
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DocumentTitle_FL Analysis of the Effects of Different Harvesting Periods on Storage Quality of Plum Fruit Based on Principal Component Analysis
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Issue 16
Keywords 李果实
evaluation
主成分分析
评价
贮藏品质
plum fruit
harvesting period
principal component analysis
采收期
storage quality
Language Chinese
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Snippet TS255.3; 为探究不同采收期对李果实贮藏品质的影响,该研究以'蜜橘'李果实为试验材料,对采后李果实13个品质及生理指标进行分析,结合主成分分析(principal component analysis,PCA)法和数学模型对3个采收期(盛花后100d、盛花后103 d、盛花后106...
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StartPage 272
Title 基于主成分分析法分析不同采收期对李果实贮藏品质的影响
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