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It may have something to do with the sulfite treatment. In some south east aisan countries, prawns that have been affected by acid sulfate runoff also turn dark blue or black.
I have no first hand knowledge of this but remember hearing or reading this somewhere.
Regards
Dave
I have no first hand experience with this but perhaps someone can provide us with more info.
>>> [log in to unmask] 08/17 6:41 pm >>>
I have received the following query, regarding shrimp fisheries in Cameroon:
" Here (in Cameroon), 'Giant Sea Shrimps (Sea Bob)' are caught at sea, and
frozen onboard. After about a week at sea, the boats return to port, where
the catch is treated with 'sulfite' and prepared for sale. However, about
20% of the catch develops a green discoloration, and has to be discarded.
What causes this? I suspect it's either a bacterial infection or 'enzymatic
oxidation'. I've read that Ivory Coast has a similar problem, but there the
shrimp turn black. "
If anyone has information on this phenomenon, let us know!
Regards,
Mariana
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==========================================
Mariana B. Horsten
Department of Marine Fisheries
Danish Institute for Fisheries Research (DIFRES)
DK-2920 Charlottenlund
DENMARK
Email: [log in to unmask] --- Tel: (+45) 33 96 33 59
Website: http://mbhorsten.tripod.com/ (updated: 21.06.2000)
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David Rissik
Data and Technical Auditor
Estuaries Branch, DLWC
Level 12, 10 Valentine Avenue
Parramatta, 2150
NSW Australia
Tel: 02 9895 5093
Fax: 02 9895 5959
Tel: (02) 9895 5093
Fax: (02) 9895 5959
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