Abstract
An experimental shipboard irradiator was installed aboard the Bureau Of Commercial Fisheries research vessel Miller Freeman and utilized to irradiate West Coast fish at sea. The optimum dose range for irradiating whole English sole (Parophrys vetulus), Dover sole (Microstomus pacificus), Pacific cod (Gadus macrocephalus), Pacific ocean perch (Sebastodes alutus), and black rockfish (Sebastodes melanops) is in the range of 50 to 100 kilorads. The shelf life (at a high level of quality) of the irradiated products was extended by one and one-half to two times that of the nonirradiated samples. Among the five species irradiated at various states of rigor, prerigor-rigor fish generally had better storage characteristics than postrigor fish.
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