New Modified Dipping Method Using 4-hexylresorcinol for Preventing Blackspot Formation in Prawns

Autor: David J. Williams, Caterina Torrisi, Steven L. Slattery
Rok vydání: 2009
Předmět:
Zdroj: Journal of Aquatic Food Product Technology. 18:284-293
ISSN: 1547-0636
1049-8850
DOI: 10.1080/10498850902762299
Popis: Industry acceptance of alternative sulphite treatments for preventing blackspot in prawns is limited. This study demonstrated that dipping prawns (Penaeus monodon and Fenneropenaeus merguiensis) in a less concentrated solution for longer times provides better control of blackspot formation than the recommended 2 minute dip in 50 mg/L 4-hexylresorcinol. Protection improved as modified dipping times and solution concentrations increased. Blackspot protection provided by most of the modified dip methods was more effective than a 1 minute dip in 1% sodium metabisulphite. The recommended 2 minute dip method should be limited to 125 kg when used on consecutive 25-kg batches of prawns. Yields increased by less than 10% even after 72-hour exposure in the modified dip. The new dipping method meets most international residue standards when applying the modified treatments evaluated.
Databáze: OpenAIRE