Journal
FOOD CHEMISTRY
Volume 104, Issue 4, Pages 1366-1371Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2007.01.052
Keywords
histamine; food poisoning; billfish; polymerase chain reaction; cytochrome b gene
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Two incidents of food-borne poisonings, causing illness in 59 and 43 victims due to ingestion of billfish meats, occurred in May 2004, in Pingtung, southern Taiwan and in December 2004, Taichung, central Taiwan, respectively. One fried billfish fillet and five frozen billfish fillet samples collected, respectively, from the suspected restaurants in Pingtung and Taichung, respectively, were tested to determine the histamine levels and identify fish species. Analyses of histamine showed that the suspected bilifish samples in two food poisonings contained more than 150 mg/100 g of histamine, which is higher than the hazard action level of 50 mg/100 g. Judging from the allergy-like symptoms of the victims and the high histamine levels in the suspected billfish samples, both food-borne poisonings were strongly suspected to be caused by histamine intoxication. A polymerase chain reaction- restriction fragment length polymorphism (PCR-RFLP) method was used to identify the species of the suspected billfish samples in both food poisonings. The 348 bp amplified fragment of the mitochondrial cytochrome b gene by PCR was digested with BsaJI Cac8I and HpaII enzymes to distinguish the species of the suspected billfish samples. Consequently, the species of Pingtung and Taichung billfish samples implicated in food poisonings were identified as Makaira nigricans and Xiphias gladius, respectively. (c) 2007 Elsevier Ltd. All rights reserved.
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