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20 August 2004 Raman spectroscopic measurements of beta-carotene and lycopene in human skin
M. E. Darvin, I. Gerzonde, S. Ey, Nikolai N. Brandt, Hansjoerg Albrecht, Sergei A. Gonchukov, Wolfram Sterry, Juergen Lademann
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Proceedings Volume 5474, Saratov Fall Meeting 2003: Optical Technologies in Biophysics and Medicine V; (2004) https://doi.org/10.1117/12.578308
Event: Saratov Fall Meeting 2003, 2003, Saratov, Russian Federation
Abstract
The antioxidant β-carotene and lycopene substances were detected non-invasively, in vivo in human skin using resonance Raman spectroscopy. Both substances were detected simultaneously. To distinguish between the substances, the Raman signals were excited at 488 nm and 514,5 nm simultaneously using a multilane Ar+ laser. The application of a fiber based optical imaging system allowed the detection of β-carotene and lycopene on any skin area. The disturbance of the measurements because of non-homogeneous skin pigmentation was avoided by using a measuring area of 28 mm2. The minimum power density for registration of the Raman signals and their optimum relation was determined. The Raman spectroscopic method is well suited for the evaluation of the efficacy of topically or systematically applied amounts of β-carotene and lycopene.
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M. E. Darvin, I. Gerzonde, S. Ey, Nikolai N. Brandt, Hansjoerg Albrecht, Sergei A. Gonchukov, Wolfram Sterry, and Juergen Lademann "Raman spectroscopic measurements of beta-carotene and lycopene in human skin", Proc. SPIE 5474, Saratov Fall Meeting 2003: Optical Technologies in Biophysics and Medicine V, (20 August 2004); https://doi.org/10.1117/12.578308
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KEYWORDS
Raman spectroscopy
Skin
Molecules
Oxygen
Spectroscopy
Absorption
Imaging systems
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