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Appl Environ Microbiol. 1973 June; 25(6): 858-861
Copyright © 1973 American Society for Microbiology. All Rights Reserved.

Microbiological Evaluation of Cold-Water Shrimp (Pandalus borealis)

¹ Food and Drug Administration, Boston, Massachusetts 02109

ABSTRACT

A bacteriological survey of the Maine shrimp industry was conducted to investigate the conditions associated with the production of frozen, raw, peeled shrimp. In-plant samples and finished product units were collected from seven plants. The most probable number of Escherichia coli, coliforms, and coagulase-positive staphylococci, as well as aerobic plate counts (APC), were determined. Freshly harvested shrimp collected from fishing vessels had an APC geometric mean of 510/g, and E. coli, coliforms, and coagulase-positive staphylococci were absent. Subsequent storage and insanitary practices during processing increased the APC and introduced coliforms. However, the low air temperatures (18 to 45 F) in the plants and the large volumes of cold water (34 F) used during processing inhibited significant bacterial buildup in the finished product.