Removal of pathogenic bacteria and grittiness from clam (Villorita cyprinoides) and mussel (Perna viridis) meant for processing by a biological method

Surendran, P K and Balachandran, K K (1988) Removal of pathogenic bacteria and grittiness from clam (Villorita cyprinoides) and mussel (Perna viridis) meant for processing by a biological method. CMFRI Bulletin, 42 (2). pp. 404-409.

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Abstract

Live clams (Villorita cyprjnoides) from Vembanad Lake (Kerala) and live mussels (Perna viridis) from Calicut (Kerala) were examined for their bacteria and sand content. It was observed that the flesh of these bivalves harboured large bacterial populations Including faecal coliforms, Escherichia coli and faecal streptococci. Also their intestines contained mud and sand (acid insoluble ash) sufficient to impart muddy flavour and grit~ness to the meat. A cleansing operation to achieve the elimination of pathogenic/indicator bacteria, mud and sand from the clam and mussel meat has been worked out. process involves depuration of the bivalves in their clean natural water for 18-24 h, followed by chlorination of the system to 6 ppm level and maintaining in that condition for an additional 2 h. By this process, there was complete remove1 of pathogenic indicator bacteria from their muscle. Also, the acid insoluble ash decrease to negligible levels.

Item Type:Article
Uncontrolled Keywords:Pathogenic bacteria; grittiness; clam; Villorita cyprinoides; mussel; Perna viridis
Subjects:Molluscan Fisheries
Divisions:CMFRI-Cochin > Marine Capture > Molluscan Fisheries
ID Code:2616
Deposited By:Dr. V Mohan
Deposited On:24 Aug 2010 15:16
Last Modified:24 Aug 2010 15:16

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