Journal of Food, Agriculture and Environment

Vol 11, Issue 3&4,2013
Online ISSN: 1459-0263
Print ISSN: 1459-0255

Effect of UV-C illumination on antioxidant capacity and postharvest decay in blueberry fruit


Mustafa Erkan 1, Shiow Y. Wang 2, Chien Y. Wang 3

Recieved Date: 2013-05-02, Accepted Date: 2013-10-22


The changes in antioxidant capacity, anthocyanin and phenolics content and decay development in blueberry (Vaccinium corymbosum L. cv. Bluecrop) fruit illuminated with different UV-C durations and dosages were investigated. Three UV-C illumination durations and dosages, 1 min, 5 min and 10 min, (0.39, 2.03 and 4.12 kJ m-2) tested increased the antioxidant capacity, phenolics content and significantly reduced the severity of decay during storage at 5oC compared to the control treatment. UV-C illumination for 10 and 5 min showed the best results for enhancing antioxidant capacity expressed as oxygen radical absorbance capacity (ORAC) values after storage for 20 days among all the treatments. All UV-C dosages increased the phenolics content of blueberry fruit as well. Total anthocyanin content of blueberries increased during storage in all treatments. However, UV-C illumination showed little effect on the anthocyanin accumulation. All UV-C dosages retarded the development of decay comparing to control treatment, but 10 and 5 min UV-C illumination gave the best decay inhibition.


Blueberries, UV-C illumination, antioxidant capacity, anthocyanin, decay

Journal: Journal of Food, Agriculture and Environment
Year: 2013
Volume: 11
Issue: 3&4
Category: Food and Health
Pages: 434-436

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