Dear Sebastian,
Shucked clams normally may contain small pieces of shells and sand deposits.To the best of my
knowledge there is no such type of equipment in the market for this type of natural residual
in clams. As you may know clams shells are nonferrous material which does not emit any type of
resonance that will be detected.
In the United States the shucker-packer of fresh or frozen molluscan bivalves have personnel
in the packing room in their best of their abilities to remove small pieces of shells. This
activity is performed over a skimmer table and the product is washed. Other alternatives the
industry may use at their discretion include cascade washing, or blower tanks (forced air)
which may loose some pieces but have other purpose. But this system is not perfect and it may
still have some small residual pieces that may have escape.
In terms of HACCP this will not be a significant hazard. If you are thinking in terms of
setting a critical limit for your own firm then for a particulate that is nonferrous metal
then you may set your own limit of detection of larger than 3 mm. (Chapter 20- Fish and
Fisheries Hazard Control Guide, 1998)
Sincerely,
Angel M. Suárez
Registered Sanitarian
Sebastian Gutierrez wrote:
> Dear Listers,
>
> Does any know if there is an equipment or system to detect the presence of little
> pieces of shell in cooked clams?..... (I'm looking for something like a "metal detector").
>
> Regards,
>
>
> _________________________________
> Sebastian Gutierrez D.
> Project Manager
> FUNDACION CHILE
> email : sgutierr@fundch.cl
> Tel (56)(2) 2400309
> Fax (56)(2) 2419394
> Web http://www.fundch.cl
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