Folia Horticulturae

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Postharvest quality of ‘Oneida’ plums stored in a cold room in open air or in boxes tightly wrapped in polythene foil

Henryk Plich

Research Institute of Pomology and Floriculture
Pomologiczna 18, 96-100 Skierniewice, Poland
e-mail: hplich@insad.pl

The storability of ‘Oneida’ plums is rather short for the following reasons: a rapid loss of water and related skin shrivelling, a fast flesh softening after removal from the cold storage room and, most critical of all, the development of internal breakdown in the flesh. The skin began to shrivel in the fruit peduncle area when the fruit weight loss was about 7-8%. This greatly reduced their market value because of their less attractive appearance.Tight wrapping of boxes containing plums with polythene foil greatly minimized the water loss and improved the fruit appearance. However, it caused a more rapid development of internal breakdown in the plum flesh. Detailed observations and measurements showed that in tightly closed jars containing plums a rapid accumulation of CO2 occurred. Probably this was the reason for negative symptoms induced in plums as no such acceleration of internal breakdown development took place in fruit wrapped in perforated foil bags, or when the CO2 in jars was maintained at a low level by placing inside the jars a sufficient amount of lime to absorb CO2 emitted by the fruit.

Plich H., 2003. Postharvest quality of ‘Oneida’ plum stored in a cold room in open air or in boxes tightly wrapped in polythene foil. Folia Horticulturae 15/1: 57-67.