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Adulterant Detection in Peppermint Oil by Means of Holographic Photopolymers Based on Composite Materials with Liquid
Wafaa Miloua1, Manuel Ortuño1,2, Víctor Navarro-Fuster1,2
1Instituto Universitario de Física Aplicada a las Ciencias y las Tecnologías, Universidad de Alicante, P.O. Box 99, E-03080 Alicante, Spain.
Abstract:
Diffraction gratings are recorded in a holographic photopolymer containing nematic liquid crystal and peppermint oil. The presence of the oil modifies the polymerization and the holographic response. The composite containing oil adulterated with triethyl citrate obtains a diffraction efficiency related to the oil's purity. The results obtained suggest the possibility of developing a holographic chemical analysis method for quality control of raw materials.

