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Nucleotide Degradation Profiles of Iced Barramundi (Lates calcarifer) and Nile Perch (Lates niloticus) Muscle

Williams, D.J. and Nottingham, S.M. and Poole, S.E. and Petroff, M. (1993) Nucleotide Degradation Profiles of Iced Barramundi (Lates calcarifer) and Nile Perch (Lates niloticus) Muscle. Journal of Aquatic Food Product Technology, 2 (2). pp. 63-74.

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Publisher URL: http://www.haworthpressinc.com/web/JAFPT/
Publisher URL: http://www.haworthpressinc.com/journals/default.asp

Abstract

Adenine nucleotides and their related compounds were determined in muscle extracts from two species of fish that were stored in ice after thawing. The fish were the closely related species, Australian barramundi (Lates calcarifer ) and Kenyan Nile perch (Lates niloticus ) which had different process histories. For all samples, adenine nucleotides did not exceed 6% of the total nucleotide pool. Inosine monophosphate (IMP) decreased steadily with storage. Hypoxanthine (Hx) was the major product of adenosine triphosphate (ATP) degradation in both barramundi and Nile perch, showing a steady increase with days of iced storage. The Hx level did not reach a maximum during the 9d storage period. The K-value also increased regularly with time of storage and for the later stages (i.e., 7 and 9d) and was significantly different (P < 0.01) for the two species. The iced storage life of these typical samples of barramundi and Nile perch was estimated to be 3d after thawing using a K-value of < 30% to indicate excellent quality. Despite the differences in process history the nucleotide profiles were remarkably similar during storage. This precludes the use of nucleotide levels as a means of differentiating between these species.

Item Type:Article
Corporate Creators:Emerging Technologies
Additional Information:© Hayworth Press Inc.
Keywords:Fishery products; cold storage; storage effects; nucleotides; muscles; Lates calcarifer; Lates niloticus.
Subjects:Aquaculture and Fisheries > Fisheries > Packing, transportation and storage
Aquaculture and Fisheries > Fisheries > Fishery for individual species
Aquaculture and Fisheries > Fisheries > Fishery processing
Deposited On:11 Jun 2004
Last Modified:06 Sep 2010 06:23

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