Abstract
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.
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Acknowledgements
We would like to thank Prof. Dr. Gelson Biscaia de Souza (UEPG) for preparing the pictures.
Funding
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).
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Ribeiro, M.S., Turchiello, R.F. & Gómez, S.L. Employment of Laser Beam Self-Phase Modulation for Detecting Adulterations in Light-Absorbing Commercial Fluids. Food Anal. Methods 12, 908–913 (2019). https://doi.org/10.1007/s12161-018-01422-2
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DOI: https://doi.org/10.1007/s12161-018-01422-2