Özogul, F.; Özden, Ö.; Özoğul, Y.; Erkan, N.
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Department of Fish Processing Technology, Faculty of Fisheries, Cukurova University, 01330 Balcalı, Adana, Turkey.
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The effects of two irradiation doses (2.5 and 5 kGy) on nucleotide breakdown compounds in sea bass stored in ice were investigated. Nucleotide degradation was slower in sea bass irradiated at 2.5 and 5 kGy than untreated samples. Irradiated samples had lower hypoxanthine and inosine content than the control group. Significant differences (p<0.05) in K and related values were found between control groups and irradiated samples (2.5 and 5 kGy). H and G values showed a good correlation with storage time (r2≥0.98) while linear regressions of K and Ki ranged from 0.95 and 0.93 to 0.98 and 0.97, respectively. A dose of 5 kGy seemed to be more effective than that of 2.5 kGy to reduce nucleotide breakdown in sea bass. The best linear correlation was obtained from G and H values; thus, they might be used as freshness indicators for non-irradiated and irradiated sea bass.
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Indexing terms for this abstract:
Organism descriptor(s) :
Dicentrarchus labrax, sea bass
aquatic animals, aquatic organisms, chemical composition, cold storage, food irradiation, food storage, gamma radiation, hypoxanthine, ice, inosine, nucleotides
aquatic species, gamma rays
Broader term(s) :
Dicentrarchus, Moronidae, Perciformes, Osteichthyes, fishes, vertebrates, Chordata, animals, eukaryotes, Serranidae