ISHS Acta Horticulturae 232: International Workshop on Apple Culture in the Tropics and Subtropics
DETERMINATION OF ETHYLENE IN CONTROLLED ATMOSPHERE STORES IN SANTA CATARINA, SOUTHERN BRAZIL |
| Author: | R.J. Bender |
| Abstract:
The knowledge of the importance of ethylene during the pre-climacteric stage of apples leads to the implementation of methods in order to diminish its synthesis and action in controlled atmosphere (CA) stores. Ethylene release of stored apples mainly depends on the cultivar, harvest date and storage conditions (temperature, level of O2 and CO2). In order to determine ethylene levels in three CA stores at Fraiburgo/SC (Southern Brazil) air samples were monitored at weekly intervals. The ethylene concentrations measured varied in the range from 1.8 ppm to 287.5 ppm. These variations in ethylene levels are due to differences in the stage of ripening of the picked fruit and due to delay in establishing the wished storage temperature and atmosphere (O2 and CO2). Measurement of flesh firmness, total soluble solids, titratable acidity and ground color of apple skin did not show significant differences. | |
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