Role of Sulfites and 4-Hexylresorcinol in Microbial Growth and Melanosis Prevention of Deepwater Pink Shrimp (Parapenaeus longirostris) Using a Controlled Atmosphere

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A controlled atmosphere containing 48% CO2 and 7% O2 was used in association with refrigeration for storage of deepwater pink shrimp (Parapenaeus longirostris). Shrimp were treated with two different concentrations of sodium metabisulfite or 4-hexylresorcinol and subjected to the controlled atmosphere immediately after capture onboard ship or on arrival in port. Total volatile basic nitrogen, total viable counts, enterobacteria, lactic acid bacteria, and luminescent bacteria were determined, and black spot progression was evaluated. The combined effect of controlled atmosphere and melanosis inhibitors was used to delay black spot development as compared to the shrimp stored in ice alone. Storage under the controlled atmosphere without ice limited microbiological quality, namely, total viable counts, but enterobacterial growth was lower.

Document Type: Research Article

Affiliations: Instituto del Frío, Consejo Superior de Investigaciones Cientificas (C.S.I.C.), C/ José Antonio Nováis, 10, Ciudad Universitaria 28040, Madrid, Spain

Publication date: January 1, 2005

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