The use of rapid instrumental methods to assess freshness of half shell Pacific oysters, Crassostrea gigas: A feasibility study
This 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...
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ftcquniportalfig:oai:figshare.com:article/13440521 2023-05-15T15:58:16+02:00 The use of rapid instrumental methods to assess freshness of half shell Pacific oysters, Crassostrea gigas: A feasibility study T Madigan A Kiermeier J Carragher M De Barros Lopes Daniel Cozzolino 2013-07-01T00:00:00Z http://hdl.handle.net/10018/1248311 unknown https://figshare.com/articles/journal_contribution/The_use_of_rapid_instrumental_methods_to_assess_freshness_of_half_shell_Pacific_oysters_Crassostrea_gigas_A_feasibility_study/13440521 http://hdl.handle.net/10018/1248311 CQUniversity General 1.0 Food Sciences not elsewhere classified Crop and Pasture Post Harvest Technologies (incl. Transportation and Storage) Near-infrared reflectance spectroscopy Digital image analysis Shelf-life Oysters Text Journal contribution 2013 ftcquniportalfig 2022-08-05T12:07:08Z This 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. Industrial relevance This manuscript describes a feasibility study that assesses the use of digital image analysis and near-infrared spectroscopy to objectively define the freshness of half shell oysters. Successful near-infrared calibrations were developed for days of refrigerated storage and also for odour. We have also demonstrated the potential for use this applications in food processors and retailers to rapidly evaluate freshness and quality of products. The proposed method shows promise for at-line analysis. © 2013 Elsevier Ltd. Other Non-Article Part of Journal/Newspaper Crassostrea gigas CQUniversity: acquire Pacific |
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ftcquniportalfig |
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unknown |
topic |
Food Sciences not elsewhere classified Crop and Pasture Post Harvest Technologies (incl. Transportation and Storage) Near-infrared reflectance spectroscopy Digital image analysis Shelf-life Oysters |
spellingShingle |
Food Sciences not elsewhere classified Crop and Pasture Post Harvest Technologies (incl. Transportation and Storage) Near-infrared reflectance spectroscopy Digital image analysis Shelf-life Oysters T Madigan A Kiermeier J Carragher M De Barros Lopes Daniel Cozzolino The use of rapid instrumental methods to assess freshness of half shell Pacific oysters, Crassostrea gigas: A feasibility study |
topic_facet |
Food Sciences not elsewhere classified Crop and Pasture Post Harvest Technologies (incl. Transportation and Storage) Near-infrared reflectance spectroscopy Digital image analysis Shelf-life Oysters |
description |
This 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. Industrial relevance This manuscript describes a feasibility study that assesses the use of digital image analysis and near-infrared spectroscopy to objectively define the freshness of half shell oysters. Successful near-infrared calibrations were developed for days of refrigerated storage and also for odour. We have also demonstrated the potential for use this applications in food processors and retailers to rapidly evaluate freshness and quality of products. The proposed method shows promise for at-line analysis. © 2013 Elsevier Ltd. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
T Madigan A Kiermeier J Carragher M De Barros Lopes Daniel Cozzolino |
author_facet |
T Madigan A Kiermeier J Carragher M De Barros Lopes Daniel Cozzolino |
author_sort |
T Madigan |
title |
The use of rapid instrumental methods to assess freshness of half shell Pacific oysters, Crassostrea gigas: A feasibility study |
title_short |
The use of rapid instrumental methods to assess freshness of half shell Pacific oysters, Crassostrea gigas: A feasibility study |
title_full |
The use of rapid instrumental methods to assess freshness of half shell Pacific oysters, Crassostrea gigas: A feasibility study |
title_fullStr |
The use of rapid instrumental methods to assess freshness of half shell Pacific oysters, Crassostrea gigas: A feasibility study |
title_full_unstemmed |
The use of rapid instrumental methods to assess freshness of half shell Pacific oysters, Crassostrea gigas: A feasibility study |
title_sort |
use of rapid instrumental methods to assess freshness of half shell pacific oysters, crassostrea gigas: a feasibility study |
publishDate |
2013 |
url |
http://hdl.handle.net/10018/1248311 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Crassostrea gigas |
genre_facet |
Crassostrea gigas |
op_relation |
https://figshare.com/articles/journal_contribution/The_use_of_rapid_instrumental_methods_to_assess_freshness_of_half_shell_Pacific_oysters_Crassostrea_gigas_A_feasibility_study/13440521 http://hdl.handle.net/10018/1248311 |
op_rights |
CQUniversity General 1.0 |
_version_ |
1766393999102312448 |