Rapid screening of ochratoxin A in wheat by infrared spectroscopy.
FT-NIR/MIR spectroscopy
Linear discriminant analysis
Ochratoxin A
Principal component analysis
Screening method
Unprocessed wheat
Journal
Food chemistry
ISSN: 1873-7072
Titre abrégé: Food Chem
Pays: England
ID NLM: 7702639
Informations de publication
Date de publication:
01 Jun 2019
01 Jun 2019
Historique:
received:
23
04
2018
revised:
01
11
2018
accepted:
03
01
2019
entrez:
4
2
2019
pubmed:
4
2
2019
medline:
6
3
2019
Statut:
ppublish
Résumé
The use of infrared spectroscopy for the screening of 229 unprocessed durum wheat samples naturally contaminated with OTA has been investigated. Samples were analysed by both Fourier Transform near- and mid-infrared spectroscopy (FT-NIR, FT-MIR). Partial-Least Squares-Discriminant Analysis (PLS-DA) and Principal Component-Linear Discriminant Analysis (PC-LDA) classification models were used to differentiate highly contaminated durum wheat samples from low contaminated ones and the performances of the resulting models were compared. The overall discrimination rates were higher than 94% for both FT-NIR and FT-MIR range by using a cut-off limit set at 2 µg/kg OTA, independently from the classification model used thus confirming the reliability of the two statistical approaches used. False compliant rates of 6% were obtained for both spectral ranges and both classification models. These findings indicate that FT-NIR, as well as FT-MIR analysis, might be a promising, inexpensive and easy-to-use screening tool to rapidly discriminate unprocessed wheat samples for OTA content.
Identifiants
pubmed: 30711111
pii: S0308-8146(19)30038-X
doi: 10.1016/j.foodchem.2019.01.008
pii:
doi:
Substances chimiques
Ochratoxins
0
ochratoxin A
1779SX6LUY
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
95-100Informations de copyright
Copyright © 2019 Elsevier Ltd. All rights reserved.