Impactul ambalajelor cu atmosferă modificată asupra concentrației de CO2 și O2 în perioada post-recoltare la două soiuri de cireșe

Abstract

Sweet cherry fruits are considered to be highly perishable, with a short shelf life and very often cannot reach the final consumer at optimum quality after a longer period of transportation. In this research, four types of modified atmosphere packages were studied related to gas concentration dynamics during the post-harvest period to maintain fruit quality in Kordia and Regina varieties grafted on Gisela 5 rootstock. To determine the effectiveness of modified atmosphere packaging in contrast to normal atmosphere the following experiment was carried out: V1 - normal atmosphere (control); V2 - Trendlife; V3 - Decco; V4 - ESL; V5 - Xtend. Sweet cherries were stored for 42 days at the temperature of -0.5°C. At intervals of 0; 2; 4; 5 and 6 weeks after storage, the CO2 and O2 concentrations were determined using the gas analyzer for CO2 and O2 (Gas Analyzer Avi-Gas, TEXA, Poland). The results were compared to the control variant. Modified atmosphere packages had a positive effect on CO2 and O2 concentrations during storage. The concentration of carbon dioxide increased significantly and the concentration of oxygen decreased, which created favourable conditions for extending the storage life of sweet cherries. The most rational CO2 and O2 concentrations were in the variants where sweet cherries were stored in Decco and Xtend packages.