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Evaluation of sea bream (Sparus aurata) shelf life using an optoelectronic nose

Authors :
Zaragozá, Patricia
Fuentes, Ana
Fernández-Segovia, Isabel
Vivancos, José-Luis
Rizo, Arantxa
Ros-Lis, José V.
Barat, José M.
Martínez-Máñez, Ramón
Source :
Food Chemistry. Jun2013, Vol. 138 Issue 2/3, p1374-1380. 7p.
Publication Year :
2013

Abstract

Abstract: A new optoelectronic nose for the shelf-life assessment of fresh sea bream in cold storage has been developed. The chromogenic array used eight sensing materials (based on aluminium oxide and silica gel) containing pH indicators, Lewis acids and an oxidation–reduction indicator. The colour changes of the sensor array were characteristic of sea bream spoilage. Colour modulations were measured on day 0 and for the samples held in cold storage for 2, 4, 7, 9 and 11days. Determination of moisture content, pH, total volatile basic nitrogen (TVB-N), drip loss, ATP-related compounds and K 1-value and microbial (mesophilic bacteria and Enterobacteriaceae) analyses were carried out on the same days. The changes in the chromogenic arrays data were processed by statistical analysis (PCA). Moreover, PLS statistical studies allowed the creation of models to correlate the chromogenic data with concentrations of mesophilic and Enterobacteriaceae. The results suggest the feasibility of this system to help develop optoelectronic noses for fish freshness monitoring. [Copyright &y& Elsevier]

Details

Language :
English
ISSN :
03088146
Volume :
138
Issue :
2/3
Database :
Academic Search Index
Journal :
Food Chemistry
Publication Type :
Academic Journal
Accession number :
85585034
Full Text :
https://doi.org/10.1016/j.foodchem.2012.10.114