不同模拟流通温度对桃果实硬度和糖酸品质的影响  

Effect of Simulated Circulation Modes at Different Temperatures on Firmness,Sugar and Acid Composition of Peach Fruit

作　　者：刘慧[1] 吕真真[1] 杨文博[1] 张春岭[1] 刘杰超[1] 焦中高[1] LIU Hui;LÜZhenzhen;YANG Wenbo;ZHANG Chunling;LIU Jiechao;JIAO Zhonggao(Zhengzhou Fruit Research Institute,Chinese Academy of Agricultural Sciences,Zhengzhou 450009,China)

机构地区：[1]中国农业科学院郑州果树研究所,河南郑州450009

出　　处：《食品科学》2021年第9期199-205,共7页Food Science

基　　金：河南省基础与前沿技术研究计划项目(122300410125);中国农业科学院科技创新工程专项(CAAS-ASTIP-2019-ZFRI);中央级公益性科研院所基本科研业务费专项资金项目(1610192017723)。

摘　　要：为了研究常温、冷链、断链3种流通方式对桃果实品质的影响,在模拟3种流通方式的温度环境下对桃果实进行贮藏,分析模拟流通过程中的桃果肉硬度、细胞壁果胶和糖酸含量及其组成的变化情况。结果表明,桃果实采后的贮运品质受流通温度的影响显著。模拟常温环境中流通的桃果实在4 d内即失去商品价值;恒定低温的流通条件(模拟冷链流通)可以保证桃果实在贮运期和货架期的良好品质;而模拟断链流通组的桃果实由于在贮藏过程中经历了包装、出入库等环节的温度升高,在进入货架期后果实品质快速下降,货架期第2天的果肉硬度(2.14 g/cm^(2))、蔗糖含量(46.48 mg/g)和苹果酸含量(3.13 mg/g)显著低于模拟冷链流通组(P<0.05)。桃果实采后冷链流通过程应尽量避免贮运环节断链造成的温度变化,研究结果可为果蔬冷链流通系统的完善提供参考。In order to study the effects of three circulation modes of room temperature,cold chain and broken-off cold chain on the quality of peach fruit,the fruit were stored under temperature conditions simulating each circulation mode.Changes in flesh firmness,the contents of cell wall pectin,soluble sugars and titratable acids,and sugar and organic acid composition were analyzed during the simulated circulation process.The results showed that the fruit quality was significantly affected by the circulation temperature.The commodity value was lost within four days in the simulated room temperature environment.The constant low temperature condition(simulated cold chain circulation)could well maintain the fruit quality during storage and shelf life.However,the quality of peach fruit in the simulated broken-off chain circulation condition rapidly decreased after entering the shelf life period due to the increase in temperature at various stages such as packaging and warehouse-in/warehouse-out during storage.The flesh firmness(2.14 g/cm^(2)),sucrose content(46.48 mg/g)and malic acid content(3.13 mg/g)were significantly lower than those in the simulated cold chain circulation group on the 2nd day of shelf life(P<0.05).The fluctuation of circulation temperature caused by broken-off cold chain during the transportation and storage of peaches should be avoided as much as possible.These results will be helpful for the improvement of the cold chain circulation systems for vegetables and fruits.

关 键 词：桃果实 模拟流通 温度 硬度 糖酸 

分 类 号：TS255.36[轻工技术与工程—农产品加工及贮藏工程]