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B16002: Validation of the extraction procedures applied in the Yasumoto method for the detection of toxins in shellfish associated with diarrhetic shellfish poisoning (DSP)

Friday 30 April 2004

This research study aims to review and produce validation data for the national standard operating procedures for diarrhetic shellfish poisoning toxins in shellfish.

Study Duration : June 2003 to March 2004

Contractor : Central Science Laboratory (CSL)

Background

This study will scientifically review and produce validation data for the national standard operating procedure (SOP) for diarrhetic shellfish poisoning (DSP) toxins in shellfish which is based on the Yasumoto 1984 method.

Research Approach

The work will take account of the procedures used by each of the UK biotoxin monitoring laboratories during the DSP SOP and any other related research. The study will develop extraction and particulate removal procedures that can be used to develop a definitive SOP for the lipophilic toxin groups associated with DSP, which will help inform an EU standard method for the detection of DSP toxins.

Results and findings

The FSA commissioned the Central Science Laboratory (CSL) to examine and test different experimental protocols for the extraction of DSP toxins from shellfish, with the aim of contributing to the development of an optimised standard operating procedure (SOP) for the extraction of DSP toxins. The work was carried out on mussel and cockle samples. Liquid chromatography-mass spectrometry (LC-MS) analysis was employed to examine toxin stability in samples and extracts, as well as analyte recovery at various stages of the extraction procedure.

The report makes a number of recommendations regarding the various stages of the extraction procedure, including: sample preparation and extraction, solvent evaporation, solvent type, partitioning and sample re-suspension.

This data gained in this project has been important in assisting the development of a standardised SOP for the lipophilic toxin groups associated with DSP, which will help inform an EU standard method for the detection of DSP toxins.

Dissemination information

The final report is available from the FSA Library and Information centre.
To obtain a copy, please contact the Enquiry Desk, Dr Elsie Widdowson Library and Information Services, Food Standards Agency Tel: 020 7276 8181/8182 email: library&info@foodstandards.gsi.gov.uk

Contact : For any enquiries concerning this research project, please contact the relevant Programme contact or email science@foodstandards.gsi.gov.uk

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