Section 5
Chapter 4,636

A study on causes of differences in tri methylamine contents in kusaya dried rancid mackerel from niijima and oshima islands japan

Fujii, T.; Itoh, H.

Nippon Suisan Gakkaishi 44(3): 293-294


ISSN/ISBN: 0021-5392
Accession: 004635198

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Trimethylamine was not detected in kusaya (dried rancid mackerel) brine from Niijima Island, while 3.2-85 mg N/100 ml trimethylamine was detected in kusaya brine from Oshima Island. Previously, filamentous fungi were isolated from kusaya brine from Niijima Island but not from kusaya brine from Oshima Island. Filamentous fungi of the Penicillium genus could consume trimethylamine. The possibility of the role of filamentous fungi in differences in trimethylamine content in kusaya brine was investigated. Four strains of Penicillium, 1 Aspergillus sp. and 1 unidentified isolate from kusaya brine from Niijima were inoculated into BPG media containing trimethylamine and salt. Trimethylamine consumption was observed. All strains except Aspergillus have trimethylamine consuming abilities. Apparently, the absence of trimethylamine in kusaya brine from Niijima Island is due to the action of these filamentous fungi.

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