Modeling total volatile basic nitrogen production as a dose function in gamma irradiated refrigerated squid rings.

TOMAC, ALEJANDRA; MASCHERONI, RODOLFO H.; YEANNES, MARÍA ISABEL

LEBENSMITTEL-WISSENSCHAFT UND-TECHNOLOGIE-FOOD SCIENCE AND TECHNOLOGY

ELSEVIER SCIENCE BV

Lugar: Amsterdam; Año: 2014 vol. 56 p. 533 - 536

0023-6438

The behavior of a chemical spoilage index for marine products (total volatile basic nitrogen ? TVBN) was modeled as a function of the irradiation dose in Illex argentinus rings stored in refrigeration. The effect of gamma irradiation at 0, 1.8, 3.3 and 5.8 kGy on TVBN was analyzed in vacuum-packed squid rings during storage at 4 ± 1 °C. The modified Gompertz model satisfactorily described TVBN behavior for each irradiation dose (R2 more than 0.980; RMSE less than to 5.7). Gompertz model parameters (µ, A, L) were modeled with dose-dependent second order polynomials, for doses ranging between 0 and 5.8 kGy, in order to develop a complete model that is useful for predicting TVBN as a function of the dose in squid rings. Model validation was carried out using independent data of TVBN in squid rings irradiated at 4.8 kGy. The developed model can be used to predict TVBN production in gamma irradiated squid meat.