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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 21 — Jul. 20, 2012
  • pp: 5161–5167

Determination of quality and adulteration of tequila through the use of surface plasmon resonance

D. Luna-Moreno, D. Monzón-Hernández, E. Noé-Arias, and L. E. Regalado  »View Author Affiliations


Applied Optics, Vol. 51, Issue 21, pp. 5161-5167 (2012)
http://dx.doi.org/10.1364/AO.51.005161


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Abstract

In this work, the surface plasmon resonance (SPR) technique is used to determine the quality or adulteration of tequila beverages. Graphic analyses of the position and width of the SPR curve are related to the complex refractive index of the sample, showing differentiated regions where one can easily and unambiguously identify white, aged, or extra-aged tequilas, and even adulterated or low quality tequilas. The curves generated by aged and extra-aged tequilas, with respect to those obtained from white tequilas, are wider, while the resonant peak shifts towards larger angles. This behavior should be attributed to the aging process. The resonance curve is generated in 20 s, minimizing the variations of the SPR curve parameters due to temperature fluctuations.

© 2012 Optical Society of America

OCIS Codes
(130.6010) Integrated optics : Sensors
(240.0310) Optics at surfaces : Thin films
(240.6680) Optics at surfaces : Surface plasmons
(260.6970) Physical optics : Total internal reflection

ToC Category:
Optics at Surfaces

History
Original Manuscript: April 17, 2012
Revised Manuscript: May 24, 2012
Manuscript Accepted: May 27, 2012
Published: July 16, 2012

Virtual Issues
Vol. 7, Iss. 9 Virtual Journal for Biomedical Optics

Citation
D. Luna-Moreno, D. Monzón-Hernández, E. Noé-Arias, and L. E. Regalado, "Determination of quality and adulteration of tequila through the use of surface plasmon resonance," Appl. Opt. 51, 5161-5167 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-21-5161

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