Biochemical, Textural and Microbiological Quality of Squid Stored Under Conventional and Slurry Ice During Onboard Fishing
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Careful handling of fish and shellfish onboard at the vessel is of prime importance in order to maintain the freshness. Use of slurry ice for onboard fish storage allows rapid heat transfer as well as reduces damage to the product by conventional ice. In the present investigation, the effect of onboard chilling with conventional ice and slurry ice on the quality of squid was evaluated. Samples stored at different time intervals (7th and 11th day) were collected and analyzed for their biochemical, textural and microbiological quality characteristics. Use of slurry ice, immediately after catch of squid reduced the formation of nitrogenous substances as well as the rate of pH increase during storage. Total volatile base nitrogen, tri methyl amine nitrogen and thio-barbituric acid values were within the acceptable limit in both the samples. Texture analysis showed higher hardness, springiness, gumminess and chewiness values for squid samples stored under slurry ice than the samples stored under conventional ice. Further, squid samples stored under slurry ice exhibited higher values of salt content. Microbiological analysis showed significant difference (p < 0.05) in psychrophilic counts of squid stored under slurry ice than the conventional iced ones.
KeywordsSquid Chilling Slurry ice Biochemical quality Microbiological quality Texture
The authors express sincere thanks to Dr. C. N. Ravishankar, Director, ICAR-CIFT, Cochin for the encouragement and granting permission to publish this research article.
Compliance with Ethical Standards
Conflict of interest
The authors declare that they have no conflict of interest.
- 1.Sikorski ZE, Bonnie SP, Shahidi F (1994) Seafood proteins. Chapman & Hall, New YorkGoogle Scholar
- 2.Billiard F, Viard D (2002) Food safety and refrigeration. Join FAO/WHO global forum of food safety regulators, 28–30 January 2002, Marrakesh. http://www.iifiir.org/1endossiers.asp#2
- 5.Chapman L (1990) Making the grade ice slurries get top marks for quality products. Aust Fish 7:16–19Google Scholar
- 7.AOAC (1998) Official methods of analysis, 17th edn. Association of Official Analytical Chemists, Washington, DC, USAGoogle Scholar
- 8.Conway EJ (1950) Micro-diffusion analysis and volumetric error. Lockwood and Son Ltd, LondonGoogle Scholar
- 10.Velankar NK, Govindan TK (1958) A preliminary study of the distribution of non protein nitrogen in some marine fishes and invertebrates. Proc Indian Acad Sci 47:202–209Google Scholar
- 12.BAM (2001) Bacteriological analytical manual, chapter 3, aerobic plate count. FDA. http://www.fda.gov/Food/FoodScienceResearch/LaboratoryMethods/ucm063346.htm
- 13.Koneman EW, Allen SD, Janda WM, Schreckenberger PC, Winn WC Jr. (1992) Colour Atlas and Textbook of Diagnostic Microbiology, 4th edn. J. B. Lippincott Company, PhiladelphiaGoogle Scholar
- 14.Stroud GD (2001) Squid. Torry advisory note 77Google Scholar
- 21.Lakshmanan PT (2000) Fish spoilage and quality assessment. In: Kandoran MK, Thomas M, Mathew PT (eds) Iyer TSG. Quality assurance in seafood processing Society of Fisheries Technologists, Cochin, pp 26–40Google Scholar
- 22.Rodriguez O, Torres M, Pineiro C, Losada V, Aubourg SP, Barros-Velazquez J (2003) Extension of shelf life and microbial activity of horse mackerel (Trachurus trachurus) stored in flow ice. In: Novas perspectivas sobre conservação, processamento equalidade de alimentos. Actas do 68 encontro de química de alimentos, vol 1, pp 58–66Google Scholar
- 23.Connell JJ (1995) Quality deterioration and extrinsic quality defects in raw material. In: Ltd Fishing News Books (ed) Control of Fish Quality, 4th. Survey, U.K., pp 31–35Google Scholar
- 28.Nollet LML, Toldra F (2010) Hand book of sea food and sea food products analysis. Taylor and Francis Group, Boca RatonGoogle Scholar
- 29.Radocaj OF, Dimic EB, Vujasinovic VB (2011) Optimization of the texture of fat-based spread containing hull-less pumpkin (Cucurbita pepo L.) seed press-cake. Acta Period Technol 42:1–288Google Scholar
- 30.Aubourg SP, Losada V, Prado M, Miranda J, Barros-Velázquez J (2007) Improvement of the commercial quality of chilled Norway lobster (Nephrops norvegicus) stored in slurry ice: effects of a preliminary treatment with an antimelanosic agent on enzymatic browning. Food Chem 103:741–748CrossRefGoogle Scholar