The trans-lycopene content of fresh tomato homogenates was assessed by means of the laser photoacoustic spectroscopy, the laser optothermal window, micro-Raman spectroscopy, and colorimetry; none of these methods require the extraction from the product matrix prior to the analysis. The wet chemistry method (high-performance liquid chromatography) was used as the absolute quantitative method. Analytical figures of merit for all methods were compared statistically; best linear correlation was achieved for the chromaticity index a* and chroma C*.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2854609 | PMC |
| http://dx.doi.org/10.1007/s11483-009-9140-9 | DOI Listing |
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