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Effect of gamma irradiation on aflatoxin production in barley

✍ Scribed by Hak-Gil Chang; Pericles Markakis

Publisher
John Wiley and Sons
Year
1982
Tongue
English
Weight
308 KB
Volume
33
Category
Article
ISSN
0022-5142

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✦ Synopsis

Abstract

Barley was inoculated with conidia of Aspergillus parasiticus NRRL 2999, and at 0Β°C was left to equilibrate at three moisture levels: 17, 20 and 25%. Gamma irradiation at five doses, 0, 50, 100, 200 and 400 krad, was applied to the grain either soon after moisture equilibration (3 days after inoculation) or 10 days later (13 days after inoculation). Increasing the radiation dose resulted in decreasing aflatoxin formation, with one exception: 200 krad applied 13 days after inoculation on barley stored at a moisture level of 25% (100% relative humidity) and 25Β°C led to higher aflatoxin production than at 100 or 50 krad. For the control of aflatoxin contamination in barley, storage at low moisture content appears to be more practical and effective than irradiation.

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