Food Analytical Methods

, Volume 12, Issue 4, pp 908–913 | Cite as

Employment of Laser Beam Self-Phase Modulation for Detecting Adulterations in Light-Absorbing Commercial Fluids

  • M. S. Ribeiro
  • R. F. Turchiello
  • S. L. GómezEmail author


In recent years, the increasing number of detected criminal adulterations of beverages for human consumption, for example milk, wine, and oil, has necessitated the development of precise, fast, and portable analytical inspection techniques. Optical methods are particularly promising in this context. In this communication, we propose the employment of self-phase modulation for evaluating simple adulteration, such as the addition of water, of light-absorbing commercial fluids. The technique was found to be sensitive for determining the dilution of cola soft drinks and grape juice with water.


Self-phase modulation Photothermal phenomena Optical absorption 



We would like to thank Prof. Dr. Gelson Biscaia de Souza (UEPG) for preparing the pictures.

Funding Information

This study was supported by the Brazilian agencies CAPES, CNPq, Fundaçāo Araucária, and the Science, Technology and Education Bureau of Paraná (SETI) and of the National Institute of Science and Technology of Complex Fluids (INCT-FCx).

Compliance with Ethical Standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical Approval

This article does not contain any studies with human participants or animals performed by any of the authors.

Informed Consent

Not applicable.


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Physics DepartmentState University of Ponta GrossaPonta GrossaBrazil
  2. 2.Physics DepartmentFederal University of Technology of ParanáPonta GrossaBrazil

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