Discriminant analysis of geographical origin of cork planks and stoppers by near infrared spectroscopy
The objective of this study was to assess the potential of visible and near infrared spectroscopy (VIS+NIRS) combined with multivariate analysis for identifying the geographical origin of cork. The study was carried out on cork planks and natural cork stoppers from the most representative cork-producing areas in the world. Two training sets of international and national cork planks were studied. The first set comprised a total of 479 samples from Morocco, Portugal, and Spain, while the second set comprised a total of 179 samples from the Spanish regions of Andalusia, Catalonia, and Extremadura. A training set of 90 cork stoppers from Andalusia and Catalonia was also studied. Original spectroscopic data were obtained for the transverse sections of the cork planks and for the body and top of the cork stoppers by means of a 6500 Foss-NIRSystems SY II spectrophotometer using a fiber optic probe. Remote reflectance was employed in the wavelength range of 400 to 2500 nm. After analyzing the spectroscopic data, discriminant models were obtained by means of partial least square (PLS) with 70% of the samples. The best models were then validated using 30% of the remaining samples. At least 98% of the international cork plank samples and 95% of the national samples were correctly classified in the calibration and validation stage. The best model for the cork stoppers was obtained for the top of the stoppers, with at least 90% of the samples being correctly classified. The results demonstrate the potential of VIS + NIRS technology as a rapid and accurate method for predicting the geographical origin of cork plank and stoppers. Copyright © Taylor & Francis Group, LLC.
Main Authors: | , , , |
---|---|
Format: | journal article biblioteca |
Language: | English |
Published: |
Taylor & Francis
2012
|
Subjects: | NIRS, Absorption bands, Suberin, Lignin, Cellulose, Quercus suber L., Traceability, Chain of custody, |
Online Access: | http://hdl.handle.net/20.500.12792/3566 http://hdl.handle.net/10261/294387 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
dig-inia-es-10261-294387 |
---|---|
record_format |
koha |
spelling |
dig-inia-es-10261-2943872023-02-20T10:38:14Z Discriminant analysis of geographical origin of cork planks and stoppers by near infrared spectroscopy Prades, C. Gómez-Sánchez, I. García-Olmo, J. González-Adrados, J. R. NIRS Absorption bands Suberin Lignin Cellulose Quercus suber L. Traceability Chain of custody The objective of this study was to assess the potential of visible and near infrared spectroscopy (VIS+NIRS) combined with multivariate analysis for identifying the geographical origin of cork. The study was carried out on cork planks and natural cork stoppers from the most representative cork-producing areas in the world. Two training sets of international and national cork planks were studied. The first set comprised a total of 479 samples from Morocco, Portugal, and Spain, while the second set comprised a total of 179 samples from the Spanish regions of Andalusia, Catalonia, and Extremadura. A training set of 90 cork stoppers from Andalusia and Catalonia was also studied. Original spectroscopic data were obtained for the transverse sections of the cork planks and for the body and top of the cork stoppers by means of a 6500 Foss-NIRSystems SY II spectrophotometer using a fiber optic probe. Remote reflectance was employed in the wavelength range of 400 to 2500 nm. After analyzing the spectroscopic data, discriminant models were obtained by means of partial least square (PLS) with 70% of the samples. The best models were then validated using 30% of the remaining samples. At least 98% of the international cork plank samples and 95% of the national samples were correctly classified in the calibration and validation stage. The best model for the cork stoppers was obtained for the top of the stoppers, with at least 90% of the samples being correctly classified. The results demonstrate the potential of VIS + NIRS technology as a rapid and accurate method for predicting the geographical origin of cork plank and stoppers. Copyright © Taylor & Francis Group, LLC. 2023-02-20T10:38:14Z 2023-02-20T10:38:14Z 2012 journal article Journal of Wood Chemistry and Technology 32: 54-70 (2012) 0277-3813 http://hdl.handle.net/20.500.12792/3566 http://hdl.handle.net/10261/294387 10.1080/02773813.2011.599697 1532-2319 en none Taylor & Francis |
institution |
INIA ES |
collection |
DSpace |
country |
España |
countrycode |
ES |
component |
Bibliográfico |
access |
En linea |
databasecode |
dig-inia-es |
tag |
biblioteca |
region |
Europa del Sur |
libraryname |
Biblioteca del INIA España |
language |
English |
topic |
NIRS Absorption bands Suberin Lignin Cellulose Quercus suber L. Traceability Chain of custody NIRS Absorption bands Suberin Lignin Cellulose Quercus suber L. Traceability Chain of custody |
spellingShingle |
NIRS Absorption bands Suberin Lignin Cellulose Quercus suber L. Traceability Chain of custody NIRS Absorption bands Suberin Lignin Cellulose Quercus suber L. Traceability Chain of custody Prades, C. Gómez-Sánchez, I. García-Olmo, J. González-Adrados, J. R. Discriminant analysis of geographical origin of cork planks and stoppers by near infrared spectroscopy |
description |
The objective of this study was to assess the potential of visible and near infrared spectroscopy (VIS+NIRS) combined with multivariate analysis for identifying the geographical origin of cork. The study was carried out on cork planks and natural cork stoppers from the most representative cork-producing areas in the world. Two training sets of international and national cork planks were studied. The first set comprised a total of 479 samples from Morocco, Portugal, and Spain, while the second set comprised a total of 179 samples from the Spanish regions of Andalusia, Catalonia, and Extremadura. A training set of 90 cork stoppers from Andalusia and Catalonia was also studied. Original spectroscopic data were obtained for the transverse sections of the cork planks and for the body and top of the cork stoppers by means of a 6500 Foss-NIRSystems SY II spectrophotometer using a fiber optic probe. Remote reflectance was employed in the wavelength range of 400 to 2500 nm. After analyzing the spectroscopic data, discriminant models were obtained by means of partial least square (PLS) with 70% of the samples. The best models were then validated using 30% of the remaining samples. At least 98% of the international cork plank samples and 95% of the national samples were correctly classified in the calibration and validation stage. The best model for the cork stoppers was obtained for the top of the stoppers, with at least 90% of the samples being correctly classified. The results demonstrate the potential of VIS + NIRS technology as a rapid and accurate method for predicting the geographical origin of cork plank and stoppers. Copyright © Taylor & Francis Group, LLC. |
format |
journal article |
topic_facet |
NIRS Absorption bands Suberin Lignin Cellulose Quercus suber L. Traceability Chain of custody |
author |
Prades, C. Gómez-Sánchez, I. García-Olmo, J. González-Adrados, J. R. |
author_facet |
Prades, C. Gómez-Sánchez, I. García-Olmo, J. González-Adrados, J. R. |
author_sort |
Prades, C. |
title |
Discriminant analysis of geographical origin of cork planks and stoppers by near infrared spectroscopy |
title_short |
Discriminant analysis of geographical origin of cork planks and stoppers by near infrared spectroscopy |
title_full |
Discriminant analysis of geographical origin of cork planks and stoppers by near infrared spectroscopy |
title_fullStr |
Discriminant analysis of geographical origin of cork planks and stoppers by near infrared spectroscopy |
title_full_unstemmed |
Discriminant analysis of geographical origin of cork planks and stoppers by near infrared spectroscopy |
title_sort |
discriminant analysis of geographical origin of cork planks and stoppers by near infrared spectroscopy |
publisher |
Taylor & Francis |
publishDate |
2012 |
url |
http://hdl.handle.net/20.500.12792/3566 http://hdl.handle.net/10261/294387 |
work_keys_str_mv |
AT pradesc discriminantanalysisofgeographicaloriginofcorkplanksandstoppersbynearinfraredspectroscopy AT gomezsanchezi discriminantanalysisofgeographicaloriginofcorkplanksandstoppersbynearinfraredspectroscopy AT garciaolmoj discriminantanalysisofgeographicaloriginofcorkplanksandstoppersbynearinfraredspectroscopy AT gonzalezadradosjr discriminantanalysisofgeographicaloriginofcorkplanksandstoppersbynearinfraredspectroscopy |
_version_ |
1767603607427874816 |