Authentication of saffron using 60â¯MHz 1H NMR spectroscopy.
Food Chem
; 404(Pt B): 134649, 2023 Mar 15.
Article
em En
| MEDLINE
| ID: mdl-36288673
ABSTRACT
60â¯MHz proton NMR spectroscopy was used to analyse extracts from saffron spice and a range of potential adulterants and mixtures. Using a simple extraction procedure, good quality spectra were obtained which contain peaks from the characteristic metabolites picrocrocin and crocins, fatty acids and kaempferol. The spectra of samples from trusted suppliers were used to train one-class classification models by SIMCA, nearest neighbour and isolation forest methods. Applying these to spectra of saffron samples purchased from the online marketplace, it was found that 7 out of 33 samples were highly anomalous. From comparison with the spectra of known mixtures and confirmatory spectral analysis using 600â¯MHz NMR, it is probable that these contain considerable amounts of undisclosed foreign matter.
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1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Crocus
Idioma:
En
Revista:
Food Chem
Ano de publicação:
2023
Tipo de documento:
Article