Variación del residual de sulfito en el camarón de cultivo Litopenaeus vannamei almacenado en hielo
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Date
2009
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Variation of the sulphite residual in cultured shrimp Litopenaeus vannamei stored in ice variablesAbstract
The absorption and loss of the sulfhite in the shrimp has great importance in their post-crop handling, since the sulfhite residual can give a measure of the protection that presents the shrimp against the appearance of the melanosis. Shrimps were taken and underwent to a treatment in solution of MBS to 8 % using different times of immersion, being determined the residual of sulfhite in the product obtained in each case. Additionally, the shrimps tried during five minutes were placed in plastic containers with ice in proportion 1:1, those that were storaged in a refrigeration camera to a temperature between 7 and 10 °C during five days. The residual ones were determined every day with the objective of quantifying the losses that take place during the storage in ice. Later the curves of absorption and loss of MBS were obtained and the mathematical models were determined that explain this processes. It was observed that the biggest absorption takes place in the first minute of immersion. In the process of loss it was known that to the six days of storage in ice, the residual of sulfhite had shrunk in 93 %.La absorción y pérdida del sulfito en el camarón reviste gran importancia en su manejo postcosecha, por cuanto el residual de sulfito puede dar una medida de la protección que presenta el camarón contra la aparición de la melanosis. Se tomaron ejemplares de camarón y se sometieron a un tratamiento en solución de MBS al 8 % empleando diferentes tiempos de inmersión, determinándose los residuales de sulfito en el producto obtenido en cada caso. Adicionalmente, los camarones tratados durante 5 min se colocaron en contenedores plásticos con hielo en proporción 1:1, los que fueron almacenados en una cámara de refrigeración a una temperatura entre 7 y 10 °C durante cinco días. Se determinaron los residuales cada día con el objetivo de cuantificar las pérdidas que se producen durante el almacenamiento en hielo. Posteriormente se obtuvieron las curvas de absorción y pérdida de MBS y se determinaron los modelos matemáticos que explican dichos procesos. Se observó que la mayor absorción se produce en el primer minuto de inmersión. En el proceso de pérdida se conoció que a los seis días de almacenamiento en hielo, el residual de sulfito había mermado en 93 %.
Journal
Revista cubana de investigaciones pesquerasVolume
26Issue/Article Nr
1Collections