Quality evaluation and identification of counterfeit tequilas, using chemo metric techniques, UV-vis anda spectroscopy FT-mir
Announcement Date : Jan 15 , 2016
Innovation: Quality evaluation and identification of counterfeit tequilas, using chemo metric techniques, UV-vis anda spectroscopy FT-mir
Author: Guadalupe Perez Caballero
Co-Author: Rocio Lopez Nieves, Jose Manuel Andrade Garda, Alma Vazquez Revilla
Description: A differentiation authenticated and counterfeit tequila was conducted on the basis of UV-VIS and FT-MIR spectroscopy and chemometric techniques (Principal Component Analysis and Cluster Analysis). Similarly, analysis of nearly 100 bottles of tequila led to the development of optimal to distinguish between types (‘white’, ‘rest’ and ‘old’) models. In addition, some tequilas acquired markets (with the same labels as name brands) rested were identified as fake tequilas. In another study, around 70 samples of tequila deliberately adulterated by the addition of distilled alcohol or cane to the three types of tequila, is distinguished from authentic tequilas. Moreover, the poor quality of all bulk tequilas sold in the street markets in the city of Tequila was presented. To simulate the aged tequila, oak extract is sometimes added to other tequilas. The composition of 68 samples of tequila was modified by adding oak extract and could be differentiated from the original. The consumption of adulterated drinks represent a health risk, because it can cause blindness, poisoning, brain damage and even death.
Profit, Social Impact: It is highlight that results were obtained in minutes and can be performed in situ, in contrast to the traditional technique as gas chromatography. In addition, experts Analysts are not obliged to apply the methodologies proposed.