Articles
THE EFFECTS OF DIFFERENT STORAGE TEMPERATURES AND POSTHARVEST TREATMENTS ON STORAGE AND CHILLING INJURY OF ‘WASHINGTON NAVEL’ ORANGES
Article number
518_11
Pages
93 – 100
Language
Abstract
The effects of different storage temperatures and postharvest treatments on storage behaviour and chilling injury of ‘Washington Navel’ oranges (Citrus sinensis L. Osbeck), grown under Mediterranean climatic conditions in Antalya, Turkey were investigated.
The oranges were harvested at the optimum harvest time and divided into three groups for different postharvest treatments.
The first group of oranges was wrapped in diphenyl impregnated paper after washing and drying, to the second group of oranges wax was applied which contained 2000 ppm Imazalil and the third group of oranges was waxed and wrapped in diphenyl impregnated paper.
Finally, all fruit samples were stored at 3°, 5° and 7°C with 85–90% relative humidity.
At certain intervals samples were collected from each storage condition for physical and chemical analyses e.g. weight loss, juice content, amount of titratable acid, vitamin C content and soluble solid content.
In addition to the analyses, decayed and chilling injured fruits were recorded.
Furthermore, respiration and skin colour changes of the oranges were also examined.
The results showed that wrapping of the oranges in diphenyl impregnated paper had a favourable effect on decreasing chilling injury and quality of orange fruits.
Also the ‘Washington Navel’ cultivar could be stored for more than 4 months at 5°C storage temperature with minimal quality loss.
The oranges were harvested at the optimum harvest time and divided into three groups for different postharvest treatments.
The first group of oranges was wrapped in diphenyl impregnated paper after washing and drying, to the second group of oranges wax was applied which contained 2000 ppm Imazalil and the third group of oranges was waxed and wrapped in diphenyl impregnated paper.
Finally, all fruit samples were stored at 3°, 5° and 7°C with 85–90% relative humidity.
At certain intervals samples were collected from each storage condition for physical and chemical analyses e.g. weight loss, juice content, amount of titratable acid, vitamin C content and soluble solid content.
In addition to the analyses, decayed and chilling injured fruits were recorded.
Furthermore, respiration and skin colour changes of the oranges were also examined.
The results showed that wrapping of the oranges in diphenyl impregnated paper had a favourable effect on decreasing chilling injury and quality of orange fruits.
Also the ‘Washington Navel’ cultivar could be stored for more than 4 months at 5°C storage temperature with minimal quality loss.
Authors
M. Erkan, M. Pekmezci
Keywords
‘Washington Navel’, chilling injury, Orange, postharvest treatments, storage capability, storage temperature
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