Application of gamma irradiation for storage potato
2009
Rezaee, M. | Almasi, M.
Since deficiency of controlled store in Iran and environmental problems of chemical material, the use of gamma irradiation to control sprouting and increase the length of storage time of potatoes has been proposed as an alternative to cold storage on the use of chemical sprout suppressants. In this study potatoes of Agria Variety were irradiated at a dose of 0.10 KGy and stored along with the unirradiated controls at 12+ or - 3 deg C for a period of more than 6 months from Oct to Apr. After 4 months of storage, the sprouting ranged from 5 to 12% in irradiated potatoes and 45 to 74% in unirradiated samples and after 6 months, the unirradiated potatoes were discarded because of heavy sprouting and rotting. The rot attack was approximately double in unirradiated samples. It was found that losses through dehydration were 10.3 to 15.1% in the irradiated potatoes. Also a comparative study of reducing and non-reducing sugars, vitamin C content, total sugar, starch and protein was carried out between unirradiated and irradiated samples. The results suggested the efficacy of gamma irradiation for ensuring availability of the storing quality of potato during lean periods from Oct to Apr.
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