Curcuminoid complex, a mixture of curcumin, demethoxycurcumin and didemethoxycurcumin, is one of the most popular antioxidants of natural origin, and it has a multitude of other health benefits. It is threatened by the proliferation of counterfeit products on the market containing synthetic curcuminoids whose addition is difficult to identify as they present the three curcuminoid forms in the correct ratios. Consequently, the necessity to detect this fraudulent practice is escalating. Carbon-14 analysis is the most effective available method, but it is also expensive and difficult to implement. This paper describes the first attempt to characterize natural curcuminoids and their synthetic form, used as an adulterant, through the analysis of stable isotope ratios of carbon and hydrogen (expressed as δ13C and δ2H). Carbon values greater than -28.6‱ and hydrogen values greater than -71‱ may indicate the addition of synthetic curcuminoids to the natural ones

Perini, M.; Pianezze, S.; Ziller, L.; Larcher, R.; Pace, R. (2023-02-16). Stable Isotope Ratio Analysis for the authentication of natural antioxidant curcuminoids from Curcuma longa (Turmeric). ANTIOXIDANTS, 12 (2): 498. doi: 10.3390/antiox12020498 handle: https://hdl.handle.net/10449/80719

Stable Isotope Ratio Analysis for the authentication of natural antioxidant curcuminoids from Curcuma longa (Turmeric)

Perini, Matteo
Primo
;
Pianezze, Silvia
;
Ziller, Luca;Larcher, Roberto;
2023-02-16

Abstract

Curcuminoid complex, a mixture of curcumin, demethoxycurcumin and didemethoxycurcumin, is one of the most popular antioxidants of natural origin, and it has a multitude of other health benefits. It is threatened by the proliferation of counterfeit products on the market containing synthetic curcuminoids whose addition is difficult to identify as they present the three curcuminoid forms in the correct ratios. Consequently, the necessity to detect this fraudulent practice is escalating. Carbon-14 analysis is the most effective available method, but it is also expensive and difficult to implement. This paper describes the first attempt to characterize natural curcuminoids and their synthetic form, used as an adulterant, through the analysis of stable isotope ratios of carbon and hydrogen (expressed as δ13C and δ2H). Carbon values greater than -28.6‱ and hydrogen values greater than -71‱ may indicate the addition of synthetic curcuminoids to the natural ones
Curcuma longa
Authentication
Curcuminoids
Stable Isotope Ratio Analysis
Synthetic
Settore CHIM/10 - CHIMICA DEGLI ALIMENTI
16-feb-2023
Perini, M.; Pianezze, S.; Ziller, L.; Larcher, R.; Pace, R. (2023-02-16). Stable Isotope Ratio Analysis for the authentication of natural antioxidant curcuminoids from Curcuma longa (Turmeric). ANTIOXIDANTS, 12 (2): 498. doi: 10.3390/antiox12020498 handle: https://hdl.handle.net/10449/80719
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10449/80719
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