Influence of heating under different titration methods of residual SO2 on shrimps Litopenaeus vannamei (Boone, 1931) - DOI: 10.4025/actascianimsci.v30i1.3437

• Autor(a) principal: Vieira, Karla Patrícia Brito de Araújo
• Data de Publicação: 2008
• Outros Autores: Góes, Lílian Maria Nery de Barros, Mendes, Paulo de Paula, Galvez, Alfredo Oliveira, Mendes, Emiko Shinozaki
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Acta Scientiarum. Animal Sciences (Online)
• Texto Completo: http://www.periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/3437
• topic: Litopenaeus vannamei; metabissulfito de sódio; titulação; aquecimento; dióxido de enxofre; 5.04.05.00-4 Produção Animal

Sodium metabisulfite is the most applied preservative in shrimp culture, with its use supported by current legislation; however, its residue, sulfur dioxide (SO2), in high concentrations can provoke adverse health reactions. This study evaluated the influence of heating under different methods of residual SO2) titration in em>Litopenaeus vannamei. Shrimps were treated with nine concentrations of sodium metabisulfite and evaluated by different methods of SO2) titration. The adapted Adolfo Lutz titration method presented the highest sensitivity for the detection of SO2). The method of iodometric titration with heating made possible the detention of higher levels of SO2), when compared to the same method without heating. The heating influenced negatively on the reactive ribbon method. It is concluded that the heating influenced positively on the iodometric titration, as opposed to the reactive ribbon.