Fiber optic sensor using ZnO for detection of adulterated tequila with methanol

Jorge Isaac Necochea-Chamorro, Roberto Carlos Carrillo-Torres, Raúl Sánchez-Zeferino, Mario Enrique Álvarez-Ramos*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


A fiber optic sensor coated with a thin film of zinc oxide nanorods has been developed to detect methanol in adulterated tequila. Zinc oxide was synthesized by ultrasonic method and was used as vapor sensing media. The measured intensities of transmitted light in the optical sensor were analyzed at different concentrations of methanol in tequila. The sensor presented good response to tequila-methanol mixtures and the observed differences in response and recovery times allowed and easy and economic detection of methanol in commercial tequila. The developed sensor is a simple and economic device to detect methanol in commercial tequilas or another beverage. Moreover, it can be used as a quality control technique in laboratories to distinguish the adulteration and/or contamination degree with methanol.

Original languageEnglish
Article number101982
JournalOptical Fiber Technology
StatePublished - Nov 2019

Bibliographical note

Publisher Copyright:
© 2019 Elsevier Inc.


  • Adulterated tequila
  • Fiber optic sensor
  • Methanol
  • ZnO nanorods


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