摘要
该研究采取不同保鲜膜对蟠桃进行包装,研究其冷藏和常温货架的保鲜效果。以北京平谷蟠桃为试材,采用CK组和3个处理组,CK组为普通保鲜膜,处理组分别为防雾膜、PE膜、PLA膜,每10 d测量一次,在此基础上进行3 d常温货架实验,分析其感官品质、硬度、生理指标、营养物质的变化。结果表明,3个处理组的保鲜膜均具有气调作用,40 d时,CK组的O_(2)含量最高,为20.53%,CO_(2)含量最低,为0.21%,防雾膜组O_(2)含量为19.90%,CO_(2)含量为0.93%,PE膜组O_(2)含量为20.33%,CO_(2)含量为0.63%,PLA膜组O_(2)含量为20.10%,CO_(2)含量为0.98%,在冷藏期和常温货架期内,腐烂指数和褐变指数呈上升趋势,CK组最先出现腐烂和褐变现象,且腐烂指数和褐变指数均为最高,PLA膜处理组感官品质最优,与CK组相比较,其它3组处理均可以延缓果实衰老,减少果实营养物质损失,通过SPSS分析,综合得分CK组<防雾膜组<PE膜组<PLA膜组,PLA膜保鲜效果最好。综上所述,采取保鲜膜包装果实有利于蟠桃的冷藏和常温货架保鲜,其中PLA膜保鲜效果更好。
Flat peaches were packed with different plastic wraps to study preservation performance in cold storage and shelf storage at room temperature.Beijing Pinggu flat peaches were used in this study and were divided into four groups.For the control group(CK),ordinary plastic wraps were adopted.The peaches in the three experimental groups were wrapped in anti-fog,PE,and PLA films.The peaches were first placed in cold storage and then placed onto shelves at room temperature for 3 days before taking measurements.Measurements were recorded every 10 days to analyze variations in the sensory quality,hardness,physiological indexes,and nutrient levels.The results demonstrate that all the three plastic wraps used in the experimental groups enabled air flow.On the 40th day,the highest oxygen content(20.53%)and the lowest carbon dioxide content(0.21%)were measured for the CK group.The oxygen levels for the groups using the anti-fog,PE,and PLA films were 19.90%,20.33%,and 20.10%,respectively,and the carbon dioxide levels were 0.93%,0.63%,and 0.98%,respectively.During both cold storage and shelf storage at room temperature,the rotting and browning indices increased.Rotting and browning were noted first in the CK group,and the indices in this group were the highest.The sensory quality was the highest for the PLA-wrapped peaches.Compared to the peaches in the CK group,those in the other three experimental groups aged relatively slowly and the nutrient losses reduced.SPSS analysis results suggested that the comprehensive scores of the different groups ascended in the following order CK group<anti-fog film group<PE film group<PLA film group.Optimal preservation performance was noted for the PLA-wrapped peaches.In summary,using plastic wraps helps to keep peaches fresh during both cold storage and shelf storage at room temperature.In particular,PLA films outperform other types of wrapping.
作者
薛友林
李欣悦
张鹏
贾晓昱
李江阔
XUE Youlin;LI Xinyue;ZHANG Peng;JIA Xiaoyu;LI Jiangkuo(College of Light Industry,Liaoning University,Shenyang 110036,China;Institute of Agricultural Products Preservation and Processing Technology,Tianjin Academy of Agricultural Sciences,Tianjin Key Laboratory of Postharvest Physiology and Storage of Agricultural Products,Key Laboratory of Storage of Agricultural Products,Ministry of Agriculture and Rural Affairs,National Engineering and Technology Research Center for Preservation of Agricultural Products(Tianjin),Tianjin 300384,China)
出处
《现代食品科技》
CAS
北大核心
2022年第5期108-117,15,共11页
Modern Food Science and Technology
基金
兵团科技攻关项目(2019AB024)
天津市农业科学院青年科研人员创新研究与实验项目(2021016)
辽宁省“兴辽英才计划”项目(XLYC1807270)。
关键词
蟠桃
保鲜膜
贮藏品质
冷藏
常温货架
flat peach
plastic wrap
storage quality
cold storage
room temperature shelves
