Análise de qualidade de filé de peixe pirarucu por meio da verificação de cor utilizando modelo GAMLLS

Abstract

The Pirarucu (Arapaima gigas) is one of the largest freshwater fish on the planet, native to the Amazon, it promotes benefits for the ecosystem and communities that live from fishing. The general objective of this work is to evaluate the fish quality of Pirarucu fish fillet related to colorimetric parameters using GAMLSS models. The generalized additive models for location, scale and shape (GAMLSS) are more flexible and adequate, above all, for modeling the response variable that does not follow an exponential family distribution and in cases where the explanatory variable exhibits heterogeneity. The database consists of 20 Pirarucu fish, obtained through the research project: Development of products and co-products of pirarucu, registered in Propeq/UFMT nº 290/2018. With these data, based on the analyzes using GAMLSS models, it was possible to verify differences in the color parameters of the fish (L∗ , a∗ and b∗ ), according to the treatments performed, interfering with its versatility for commercialization.