• Journal of the Korean Society of Food Science and Nutrition
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• v.43 no.6
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• pp.909-915
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• 2014

This study was carried out to evaluate the genotoxicity of imported oranges irradiated with ionizing energy (0.5 and 1 kGy). In bacterial reversion assays with Salmonella Typhimurium TA98, TA100, TA1535, and TA1537, imported oranges irradiated with ionizing energy (0.5 and 1 kGy) showed no significant increase in the number of revertant colonies in both the absence and presence of the S9 metabolic activation system. In chromosomal aberration tests with Chinese hamster ovary (CHO) cells, imported oranges irradiated with ionizing energy (0.5 and 1 kGy) showed no increase in the frequency of chromosomal aberrations. In in vivo mouse micronucleus assay, imported oranges irradiated with ionizing energy (0.5 and 1 kGy) showed no increase in the frequency of polychromatic erythrocytes with micronucleus. These results indicate that imported oranges irradiated with ionizing energy (0.5 and 1 kGy) showed no genotoxic effects under these experimental conditions.

• Food Science and Preservation
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• v.13 no.4
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• pp.524-529
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• 2006

Gamma irradiation at 30 kGy was applied to cereal powders to evaluate their possible genotoxicity. The genotoxicity of 30 kGy-irradiated cereal powders was evaluated by Salmonella typhimurium reversion assay, chromosomal aberration test and in vivo micronucleus assay. The result were negative in the bacterial reversion assay with S. typhimurium TA98, IA100, TA1535 and TA1537. No mutagenicity was detected in the assay with and without metabolic activation. In chromosomal aberration tests with CHL cells and in vivo mouse micronucleus assay, no significant difference in the incidences of chromosomal aberration and micronuclei was observed between non-irradiated and 30 kGy-irradiated cereal powders. These result indicate that cereal powders irradiated at 30 kGy did not show any genotoxic effect under these experimental conditions.

• Journal of Radiation Industry
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• v.2 no.1
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• pp.21-26
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• 2008

Although seafood cooking drips were the byproducts from the fishery industry it was known that the cooking drips had many nutrients and could be used as functional materials. Previously, the physiological properties of cooking drips were shown to be increased by a gamma irradiation. But, there was no report on the safe for the genotoxicity on the irradiation. In this study, the genotoxicity of the cooking drips from Hizikia fusiformis, Enteroctopus dofleni and Thunnus thynnus was evaluated by the Ames test (Salmonella typhimurium reversion assay) and the SOS chromotest. The results from all samples were negative in the bacterial reversion assay with S. typhimurium TA98, TA100. No mutagenicity was detected in the assay, both with and without metabolic activation. The SOS chromotest also indicated that the gamma-irradiated seafood cooking drips did not show any mutagenicity. Therefore, this study indicated that gamma irradiation could be used for the hygiene, functional properties and processibility of seafood cooking drips.