Effect of CO2 Modified Atmosphere Packaging on Postharvest Respiration, Color and Texture of ‘Lunnan’ Apricot
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Abstract:
In order to provide basis for simple and efficient atmosphere packaging of ‘Lunnan’ apricot, the effects of CO2 concentration on postharvest physiology and quality of ‘Lunnan’ apricot were investigated using different concentrations of CO2 modified atmosphere packaging. The fruits were treated using bags with high (1.50%~2.00% CO2), medium (2.50%~3.00% CO2) and low (3.50%~4.00% CO2) gas transmission rate during storage at (1±1) ℃. The difference of ethylene accumulation in the bag, ethylene release rate and respiration rate by different pathways in the fruit, pericarp Chroma and texture were compared with the control. The results showed that different concentrations of CO2 modified atmosphere packaging during storage period reduced the ethylene release rate and ethylene accumulation in the package to different degrees. The different concentrations of CO2 modified atmosphere packaging reduced the total respiration in glycolysis pathway (EMP), pentose phosphate pathway (PPP), and alternating pathway (AP), and the respiratory peak was delayed by 6~24 days and the peak value was reduced by 12.89%~38.62%. The modified atmosphere packaging could keep the color and texture unchanged, and retard soft decay and weight loss effectively, and the storage quality of the ‘Lunnan’ apricot was well retained. Among the three treatments, medium gas transmission (2.50%~3.00% CO2) was the most effective method in terms of overall quality retention of apricots.
