Alterações na qualidade do camarão de água doce Macrobrachium rosenbergii durante estocagem em gelo

• Autor(a) principal: Kirschnik, Peter Gaberz
• Data de Publicação: 2004
• Outros Autores: Viegas, Elisabete Maria Macedo
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1590/S0101-20612004000300019; http://hdl.handle.net/11449/212289
• topic: prawn; mushiness; deterioration; shef life; Macrobrachium rosenbergii; camarão; mushiness; deterioração; vida-útil; Macrobrachium rosenbergi

Due the scarcity of studies about post-harvest conservation of Macrobrachium rosenbergii and few knowledge in this topic, the aim of this work was to evaluate it shelf-life when stored as a whole in ice during 10 days. Two conditions were compared: with direct ice contact and without ice contact. In both treatments were observed an increase (P<0,05) in Non-Protein Nitrogen, Total Volatile Base Nitrogen, Thiobarbituric Acid Reactive Substances and pH values. No faecal coliforms were observed in the prawn muscles during the storage. The score of total coliforms and psychrotrophic counting that was present in the storage period didn´t exceed the law limits allowed for consumption. There was degradation in flavour and odour attributes for both treatments during the storage. Analysis of tactile and oral texture showed a fast and significant degradation in both treatments in the first days of storage, and the same occurred with the instrumental compression force tests. We concluded the Macrobrachium rosenbergii could be consumed until the 4th storage day, either if kept in direct ice contact or packed in polyethylene bags.