Abstract
ABSTRACT: Inhibition of melanosis in shrimp (Parapenaeus longirostris) captured at different times of year and treated with different 4‐hexylresorcinol‐based formulations onboard ship was studied. Melanosis inhibition increased with inhibitor concentration. The 4‐hexylresorcinol proved effective at extending shelf life over that of untreated shrimp at all the concentrations tested. Combining the inhibitor with citric acid, ascorbic acid, and acetic acid did not increase the extent of melanosis inhibition but did noticeably improve shrimp appearance. Adding ethylenediaminetetraacetic acid (EDTA) and sodium pyrophosphate to the formulation enhanced melanosis inhibition at all times of year. Spray application of the inhibitor formulation extended shelf life compared with dipping and dusting, but dusting resulted in the lowest melanosis levels for a given formulation composition and concentration.
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