Cost-effective and nondestructive textural assessment of fish freshness via system identification principles

TitleCost-effective and nondestructive textural assessment of fish freshness via system identification principles
Publication TypeJournal Article
Year of Publication2010
AuthorsGrigorakis, K, Dimogianopoulos D
JournalJournal of Texture Studies
Volume41
Issue4
Pages492 - 510
KeywordsFreshness, Gilthead sea bream, Ice storage, Sparus aurata, System identification, System modeling, Texture
Abstract

This paper introduces a cost-effective, rapid and nondestructive methodology exploiting system identification principles for monitoring the textural changes of fish during ice storage. Gilthead sea bream stored in ice for 0 (freshly killed) and 6 days are placed on a spring-based weight scale and suffer a single, light and reproducible shock by a mallet. The reaction force, measured by the scale and recorded (throughout time) as an electrical signal, is analyzed via system identification principles for estimating the fish stiffness and damping ability in each freshness stage. Results highlight significant and highly repeatable reductions of the fish damping in 6 days of ice storage, due to textural changes undermining its ability of absorbing the shock-induced energy. The methodology correlates well with organoleptic findings, describing significant elasticity loss in the 6th day ice-stored fish. Thus, the proposed nondestructive methodology shows potential for cost-effectively estimating textural changes in fish and for correlating them with freshness. © 2010 Wiley Periodicals, Inc.

URLhttp://www.scopus.com/inward/record.url?eid=2-s2.0-77955159037&partnerID=40&md5=a0af6907e112de9547a6183f61447a1d

User login