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The use of rapid instrumental methods to assess freshness of half shell Pacific oysters, Crassostrea gigas: A feasibility study

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dc.contributor.authorMadigan, T.
dc.contributor.authorKiermeier, A.
dc.contributor.authorCarragher, J.
dc.contributor.authorde Barros Lopes, M.
dc.contributor.authorCozzolino, D.
dc.date.issued2013
dc.description.abstractThis study aimed to assess the feasibility of the use of instrumental methods such as digital image analysis (DIA) and near-infrared reflectance spectroscopy (NIRS) to objectively characterise changes in freshness (shelf-life) of half shell Pacific oysters, Crassostrea gigas. Oysters were stored in air under PVC film for five days at 4 °C. On a daily basis, oysters were photographed with a digital camera, spectra were collected using a Fourier transform NIR spectrometer in reflectance mode and odour analysed by a sensory panel. Calibrations based on NIRS were successfully developed for days of storage (R2 = 0.8, RER = 5.37) and odour (R2 = 0.77, RER = 7.77) with the latter being influenced by wavelengths typically associated with aromatic compounds. However, colour (derived from digital images) was found to be a poor indicator of freshness. This work has demonstrated the feasibility of NIRS as an objective measure of oyster freshness.
dc.description.statementofresponsibilityThomas Madigan, Andreas Kiermeier, John Carragher, Miguel de Barros Lopes, Daniel Cozzolino
dc.identifier.citationInnovative Food Science and Emerging Technologies, 2013; 19:204-209
dc.identifier.doi10.1016/j.ifset.2013.04.005
dc.identifier.issn1466-8564
dc.identifier.issn1878-5522
dc.identifier.orcidKiermeier, A. [0000-0001-6240-2919]
dc.identifier.urihttp://hdl.handle.net/2440/80050
dc.language.isoen
dc.publisherElsevier BV
dc.rights© 2013 Elsevier Ltd. All rights reserved.
dc.source.urihttps://doi.org/10.1016/j.ifset.2013.04.005
dc.subjectNear-infrared reflectance spectroscopy
dc.subjectDigital image analysis
dc.subjectShelf-life
dc.subjectOysters
dc.titleThe use of rapid instrumental methods to assess freshness of half shell Pacific oysters, Crassostrea gigas: A feasibility study
dc.typeJournal article
pubs.publication-statusPublished

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