Effect of modified atmosphere packaging on the mechanical properties of lettuce during shelf life in cold storage  

作　　者：Mahmoud Soltani Firouz Reza Alimardani Hossein Mobli Seyed Saeid Mohtasebi 

机构地区：[1]Department of Agricultural Machinery Engineering,Faculty of Agricultural Engineering and Technology,University of Tehran,Karaj,Iran

出　　处：《Information Processing in Agriculture》2021年第4期485-493,共9页农业信息处理（英文）

基　　金：Authors are grateful to Iran National Science Foundation(INSF)(Research Project Reference Number:9230796)for provided financial support and assistance.

摘　　要：Lettuce is a perishable vegetable that its shelf life is limited by detrimental texture changes and enzymatic activities during postharvest storage.One of solutions that can be used in storage and distribution of this product is modified atmosphere packaging(MAP).But its effects on the mechanical properties of the product have not been studied.This information would be beneficial in inspection of eating quality and later processing such as cutting and shredding.This research aimed to study effect of active MAP technology on the postharvest mechanical properties of lettuce at different storage periods.It was found that MAP had a significant effect on the tension property of the lettuce leaf.MAP treatment preserved the brittleness of the specimens during storage,but the control ones lost their brittleness and tolerated greater tension.Stiffness and rupture energy were significantly affected by MAP with P values of 0.01 and 0.05,respectively.Also,stiffness of the MAPtreated samples was higher than the control at the same storage time.The findings are due to reducing respiration,transpiration and bacterial growth by MAP which delays nutrient decomposition and maintains the original color and texture.

关 键 词：LETTUCE Modified Atmosphere Packaging (MAP) POSTHARVEST QUALITY 

分 类 号：TS206[轻工技术与工程—食品科学]