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Postharvest Pathology and Mycotoxins

Effect of Different Atmospheres on Postharvest Decay and Quality of Fresh Strawberries. M. K. El-Kazzaz, Department of Plant Pathology, Faculty of Agriculture, Kafr-El-Sheikh, Tanta University, Egypt; N. F. Sommer(2), and R. J. Fortlage(3). (2)(3)Postharvest pathologist, and staff research associate, Department of Pomology, University of California, Davis, 95616. Phytopathology 73:282-285. Accepted for publication 7 July 1982. Copyright 1983 The American Phytopathological Society. DOI: 10.1094/Phyto-73-282.

Effects of different atmospheres, ie, air + ethylene (C2H4) at 20 μl/L; air + 15% CO2; air + 10% carbon monoxide (CO); a controlled atmosphere (CA) of 2.3% O2 + 5% CO2; CA + C2H4 (20 μl/L); and CA + 10% CO in addition to control (air), on the postharvest decay of strawberry fruits caused by Botrytis cinerea were studied with Aiko, G-3, and G-4 cultivars at 0.6 and 3.3 C for 21 days. Air + 15% CO2 and CA + 10% CO were the most effective atmospheres in suppressing fruit rot. Presence of 20 μl of C2H4 per liter, added to either air or CA, resulted in more decay development than in other atmospheres, indicating that C2H4 might enhance disease development or fungal growth. Off-flavors were detected after treatment with air + 15% CO2. Carbon monoxide added to CA during storage of strawberries at 0.6- 3.3 C for up to three weeks may provide better results than the current practice of using high CO2.