ISHS Acta Horticulturae 368: International Symposium on Postharvest Treatment of Horticultural Crops
INTERACTION BETWEEN ETHYLENE AND CA-STORAGE OF APPLES CV. ELSTAR |
| Author: | A.C.R. van Schaik |
| Keywords: | firmness, ethylene production, respiration, colour and oxygen |
| DOI: | 10.17660/ActaHortic.1994.368.56 |
| Abstract:
Apples (cv. Elstar) were picked on early and optimal harvesting dates and stored at 1.5 °C, in 1% and 5 % oxygen and 0.5 % carbon dioxide. Ethylene was removed (0 μl/l) or supplied (100 μl/l) during storage. After 2, 4, 6 and 8 months, ethylene and carbon dioxide production were measured in flow controlled atmosphere without ethylene. After 1 and 7 days in 20 °C firmness, peel colour, carbon dioxide and ethylene production were measured. Results indicate that apples from both harvesting-times remained pre-climacterial if stored in 1 % oxygen and 0 μl/l ethylene, established by the low ethylene production and firmness retention. This suggests a longer storage potential for this variety. Production of ethylene increased in the 100 μl/l ethylene atmosphere, however more at 5 % oxygen than at 1 % oxygen. This leads to significant more firmness- and colour-decrease and increased respiration. This interaction showed that the influence of low oxygen has a combined effect on ethylene production and action. Influence on ethylene action was quantified by its response on firmness decrease. In 1 % and 5 % oxygen firmness loss amounts to 2.4 and 6.3 % per month respectively. | |
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