Back to Search
Start Over
Non-invasive in vivo detection of the carotenoid antioxidant substance lycopene in the human skin using the resonance Raman spectroscopy
- Source :
- Laser Physics Letters. 3:460-463
- Publication Year :
- 2006
- Publisher :
- IOP Publishing, 2006.
-
Abstract
- A non-invasive optical method forin vivodetermination of the concentration of carotenoid antioxidant substance lycopene in the skin, based on resonance Raman spectroscopy, is presented. The Ar+laser with an excitation wavelength at 514.5 nm was used, which corresponds to the maximum of the absorption of lycopene. This wavelength excited more lycopene than other carotenoids, because of the different absorption spectra of the carotenoids in the green spectral range. The absence of the reabsorption of carotenoids at the present wavelength and the elimination of the influences of heterogeneities of the skin, such as microstructure and pigmentation on Raman measurements by the use of a broad excitation laser beam, allows lycopene to be measured at a high accuracy. The utilization of the measurements of back reflected light from the skin allowed measurements to be performed on volunteers with all skin types.
- Subjects :
- chemistry.chemical_classification
Physics and Astronomy (miscellaneous)
Absorption spectroscopy
business.industry
Resonance Raman spectroscopy
Human skin
macromolecular substances
Absorption (skin)
Photochemistry
Laser
Lycopene
law.invention
symbols.namesake
chemistry.chemical_compound
Optics
chemistry
law
symbols
Raman spectroscopy
business
Instrumentation
Carotenoid
Subjects
Details
- ISSN :
- 1612202X and 16122011
- Volume :
- 3
- Database :
- OpenAIRE
- Journal :
- Laser Physics Letters
- Accession number :
- edsair.doi...........cbd3f1ea61f741a675420a56fe486b6b