Design of a Novel Auxiliary Diagnostic Test for the Determination of Authenticity of Tequila 100% Agave Silver Class Based on Chemometrics Analysis of the Isotopic Fingerprint of the Beverage.

On the other hand, δ 13 C VPDB values for n-propanol ( Figure 2 c), isoamyl alcohol ( Figure 2 d), and ethyl lactate ( Figure 1 c) tend to have a normal distribution with a value that has a positive trend, with centered means at −11.7‰, −6.5‰ and −10.7‰, respectively.

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