甜樱桃采后表皮蜡质形态及相关性质变化规律  

Changes in epidermal waxy morphology and related properties of postharvest sweet cherry

作　　者：张玉蕾[1,2] 崔清亮 王愈[1] 刘亚平[1] 张燕青[2] ZHANG Yulei;CUI Qingliang;WANG Yu;LIU Yaping;ZHANG Yanqing(College of Food Science and Engineering,Shanxi Agricultural University,Jinzhong,Shanxi 030801,China;College of Agricultural Engineering,Shanxi Agricultural University,Jinzhong,Shanxi 030801,China)

机构地区：[1]山西农业大学食品科学与工程学院,山西晋中030801 [2]山西农业大学农业工程学院,山西晋中030801

出　　处：《食品与机械》2024年第6期117-123,157,共8页Food and Machinery

基　　金：山西省基础研究计划项目(编号:202203021212470);山西农业大学博士科研启动项目(编号:2021BQ89);山西省博士毕业生、博士后研究人员来晋工作奖励经费科研项目(编号:SXBYKY2022028)。

摘　　要：[目的]揭示不同品种甜樱桃耐贮性差异的原因,为其采后涂膜保鲜提供理论支持和技术指导。[方法]选取4个具有代表性的甜樱桃品种(红灯、雷尼、红玛瑙、友谊)作为研究对象,对采收时不同品种甜樱桃果皮蜡质的形态、果皮对不同溶液的接触角以及红玛瑙樱桃在贮藏期间表皮蜡质形态、接触角、临界表面张力的变化进行了探究。[结果]4个品种甜樱桃在采收时表皮的蜡质分布和形态均存在差异,表皮对于同一种溶液的接触角存在显著差异;红玛瑙樱桃表皮蜡质在贮藏期间呈减少趋势;由于甜樱桃表皮的疏水性,在配制涂膜液时,向其中添加0.1%的吐温-20作为表面活性剂可显著提高涂膜液在其表面的润湿性;红玛瑙樱桃贮藏期间表皮对去离子水的接触角呈下降趋势,并且其临界表面张力随贮藏时间的延长不断升高。[结论]不同品种甜樱桃耐贮性的差异可能与其表皮特性相关联,在涂膜保鲜液中添加0.1%的吐温-20可使涂膜液更均匀地涂覆在甜樱桃表面。[Objective]This study aimed to reveal the reasons of different varieties for sweet cherry s storability and provide theoretical support and technical guidance for edible coating in its postharvest preservation.[Methods]Four representative sweet cherry varieties(Red Light,Rainey,Red Agate,and Friendship)were selected as research objects.The surface morphology of different varieties of sweet cherry skin,the contact angle of skin to different solutions,the changes of surface morphology,contact angle and critical surface tension of Red Agate sweet cherry during storage were investigated.[Results]There were differences in the distribution and morphology of wax on the epidermal of the four varieties of sweet cherry,and the contact angle of the skin to the same solution was significantly different.The wax content of the Red Agate epidermis decreased during storage.Due to the hydrophobicity of sweet cherry skin,adding Tween-20 as a surfactant to the coating liquid can significantly improve its surface wettability.The contact angle of the Red Agate epidermis to deionized water decreased during storage,and the critical surface tension increased with the extension of storage time.[Conclusion]The storability of different varieties of sweet cherries may be correlated with their skin characteristics.Adding 0.1%Tween-20 to the coating solution can make the solution more evenly coated on the surface of the sweet cherry.

关 键 词：甜樱桃 表皮蜡质 接触角 临界表面张力 

分 类 号：TS255.3[轻工技术与工程—农产品加工及贮藏工程]