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Pakistan Journal of Biological Sciences
Year: 1999  |  Volume: 2  |  Issue: 3  |  Page No.: 750 - 751

Extending the Storage Life of Onions by Gamma Radiation

A. Khan, Y.I. Khattak and R. Khan    

Abstract: The paper describes the possibility of extending the storage life of onions by gamma radiation, which poses a serious storage problem in the hot summer months in Pakistan. Bulbs were irradiated at a dose of 0.10 kGy and stored, alongwith unirradiated control, under ambient conditions for a period of 4 months. The weight loss varied between 15 and 23 after the storage period. It was found that losses through dehydration were less in the Desi than in the Red Variety. The rotting ranged from 6.5-9.4 percent in the irradiated onions and 12.4-12.8 percent in the unirradiated bulbs after 4 months storage. Quality evaluation tests revealed that the internal and external quality of the irradiated samples scored higher than the corresponding controls. The cost of onions irradiation was calculated to be Rs.290.00 per tonne.

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