Journal article
Handling of two tropical Australian sharks to improve quality and to identify the case of tough texture
Journal of Aquatic Food Product Technology, Vol.12(1), pp.3-28
2003
Abstract
Sharks caught in tropical Australian waters occasionallyexhibit tough texture. Two species of Carcharinid shark, originally known as the sorrah shark (Carcharinus sorrah) and the black spot shark (Carcharinus tilstoni), compose the majority of the catch. Experiments were conducted to identify the cause of tough texture and to improve the overall quality of the catch. The possibility that a cold shock reaction may occur was investigated by observing the contraction of fillets under a range of temperature conditions before freezing. The effect of on-boardhandling practices were evaluated using frozen shark fillets, which had been stored prior to freezing in refrigerated seawater at different rigor stages, temperatures and times as trunks. Fillets were analyzed for nucleotides, lactate, thaw pH, sarcomere length and raw and cooked shear force values. The existence of thaw rigor was also investigated. There was little difference in the texture between the individual strips of a fillet exposed to different temperatures but there were significant differences between individual sharks. A cold shock reaction could not be demonstrated in these species. The main influences on texture were of biological origin. The species, sex and size were found to have significant linkswith texture of fillets. The quality of the fillets deteriorated quicker during the warmer season and were at their worst if the trunks were kept on deck till post-rigor or held in 15°C refrigerated seawater before freezing.
Details
- Title
- Handling of two tropical Australian sharks to improve quality and to identify the case of tough texture
- Authors
- S Slattery (Author) - Queensland Department of Primary IndustriesA Cusack (Author) - Queensland Department of Primary IndustriesS M Nottingham (Author) - Queensland Department of Primary IndustriesH A Bremner (Author) - Queensland Department of Primary IndustriesP Pender (Author) - Northern Territories Department of Primary Industries and Fisheries
- Publication details
- Journal of Aquatic Food Product Technology, Vol.12(1), pp.3-28
- Publisher
- Taylor & Francis Inc.
- DOI
- 10.1300/J030v12n01_02
- ISSN
- 1049-8850
- Organisation Unit
- University of the Sunshine Coast, Queensland
- Language
- English
- Record Identifier
- 99450039102621
- Output Type
- Journal article
Metrics
4 File views/ downloads
1245 Record Views