Effect of the Irradiation Time at Room Temperatureon the Refrigeration Life of Strawberries

概要

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The Strawberries obtained from a market, were washed with detergent and rinsed with sterilized water several times to eliminate the microbial contamination from natural source. The fruits were inoculated or not inoculated with a portion of Botrytis cinerea spore suspension, and were irradiated 200 krad at room temperature (20 °C) for 1, 8 and 24 hours, at the dose rate of 200, 25 and 8.3 krad/hr, respectively, and were stored at refrigeration temperature (2 °C). From the results obtained, it was shown that the fruits which were irradiated for 1 hour, sound and not contaminated, could be stored for more than 4 weeks (Table I). On the contrary, the fruits which were irradiated for 8 or 24 hours (Fig. 1), contaminated (Fig. 2) or wounded (Fig. 3), were infected early in the refrigeration.<BR>A possible application of room temperature irradiation for storing strawberries was discussed.
日本食品照射研究協議会の論文