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- Title
The Effect of Homogenisation and Storage on the Near-Infrared Spectra of Half Shell Pacific Oysters ( Crassostrea gigas).
- Authors
Madigan, Thomas; Kiermeier, Andreas; de Barros Lopes, Miguel; Cozzolino, Daniel
- Abstract
The effect of sample homogenisation and storage on the near-infrared spectra of Pacific Oysters ( Crassostrea gigas) has been assessed. On each day of storage (Days 0, 3 and 5), spectra were collected using a Fourier transform near-infrared reflectance spectrometer in reflectance mode between 833 and 2,630 nm from whole ( n = 20) and homogenised oysters ( n = 20). The raw spectra were dominated by water- and fatty-acid-associated bands. Linear regression analysis of the water-associated absorbance bands occurring at 1,942 nm indicated that a physical or chemical interaction may be taking place within the oysters at or near Day 3, likely associated with transfer of liquids to and from oyster tissues. One-way analysis of variance of principal component scores and extended multiplicative scatter correction highlighted the water regions (O-H bonds) in whole oysters and the importance of N-H-related compounds in homogenised oysters throughout storage. These findings indicate the potential usefulness of near-infrared reflectance spectroscopy to monitor and evaluate degradation of oysters over time.
- Publication
Food Analytical Methods, 2012, Vol 5, Issue 5, p995
- ISSN
1936-9751
- Publication type
Article
- DOI
10.1007/s12161-011-9329-7