The objective of this study was to evaluate meat yield and centesimal composition of the Amazonian fish species, A. ocellatus, P. castelnaeana, and L. friderici, in the dry and flood seasonal cycles of rivers. In each seasonal cycle (flood and dry), a total of 60 fish were collected, comprising 20 specimens of each of the following species: A. ocellatus, P. castelnaeana, and L. friderici. Were evaluated the meat yield, cuts yield and centesimal composition of the fish samples. Meat yield in the clean body cuts and skinless filet varied between species and hydrological period. The results showed that seasonal variation influenced the centesimal composition and yield of the species studied, with significant differences between the cuts produced during processing. These findings highlight the need to apply a variety of technological processes to ensure efficient use of these species throughout the year. The total waste represented more than 50% of the whole fish, and the head size was directly proportional to the amount of waste generated. These results underscore the importance of waste utilization for animal and/or human nutrition.
This study evaluated the microbiological quality of dry-salted arapaima marketed in two fairs of the state of Amazonas. Were acquired twenty salted-dried fishes samples coming from the Sustainable Development Reserve Uaiti-Paraná in Fonte Boa and PANAIR in Manaus. The products of PANAIR and Fonte Boa observed the following results: for Salmonella, all samples showed satisfactory results (Absence in 25g). However, all the other results in CFU / g: staphylococci (1.0x103, 1.2x103), halophilic bacteria (2.6x103, 6.0x103) and fungi (2.5x103, 5.1x10³) outside the limit allowed by Brazilian law. The products were unfit for human consumption, indicating the need best technologies to obtain arapaima salted-dried without risk to consumer health
O matrinxã é muito apreciado na região amazônica, desta forma o aumento no tempo de vida útil comercial é fundamental. O objetivo deste trabalho foi avaliar a influência da Embalagem em Atmosfera Modificada -EAM, associada à refrigeração para prolongar o tempo de armazenamento do matrinxã, Brycon amazonicus sob 2±1°C. As amostras embaladas em EAM com CO2 (100%); CO2/N2 (60/40%) e vácuo tiveram suas características físico-químicas, microbiológicas e sensoriais avaliadas durante 35 dias de armazenamento. As amostras embaladas a vácuo apresentaram maior crescimento microbiano, mas mantiveram boa qualidade por aproximadamente, 17 dias de estocagem. As amostras tratadas com EAM CO2/N2 (60/40%) e CO2 (100%) apresentaram boa qualidade por aproximadamente, 35 dias. O teste de aceitabilidade do produto cozido foi igual para os atributos sabor, odor e textura, exceto para aparência e cor, que foram melhores, com significância de 5%, nos tratamentos CO2/N2 (60/40%) e vácuo. O presente estudo mostrou que o tratamento em atmosfera modificada CO2/N2 (60/40%) se destacou aos demais tratamentos sendo uma técnica promissora para estender a vida útil do matrinxã por até 35 dias sob refrigeração.Palavras-chave: matrinxã; matrinchã; peixe de água doce; qualidade do pescado; vida útil do pescado
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