温州ミカン貯蔵にたいする酸素濃度の影響

概要

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A study was made of the rate of gas exchange in Satsuma orange, and of relationship between oxygen concentration of atmosphere and storage life. 1. At 6C, gas exchange in Satsuma orange was very rapid. During the first 30 minutes of flushing with the modified atmosphere (O_2 4.47% and CO_2 7.73%), 50% of the oxygen in the internal atmosphere was removed. Also, carbon dioxide concentration in the internal atmosphere was rised from 0.67% in the initial atmosphere to 4%, which was equivalent to 50% of flushing concentration. After 4 hours of flushing, the gases concentration of internal atmosphere was became to about the same with the modified atmosphere. The same rate was found for reentry of oxygen from the air into the fruit and for re-outflow of carbon dioxide from the fruit into the air, when the fruit was transferred to air. 2. The influence of oxygen level on storage life : The respiratory rate in high oxygen level, such as 14.89%, was higher than that in the low, such as 3.01%. In the former treatment a little breakdown occurred, while in the latter 15% breakdown resulted during the 48 day holding period. An alcoholic volatile was detected in fruit from atmospheres containing 3.01 or 7.45% oxygen. However, no alcoho lic volatile was detected under high oxygen level. From these results, it is evdent that the oxygen concentration below 7.5% in the atmosphere affects the keeping of storage life.
神戸大学の論文