Dear all, I am using metabolic fingerprinting for my clinical studies. I am in doubt that I can use the Raman spectra for quantification? Can I use it semi-quantify? Can you provide me with references? I have biological fluid such as serum, seminal plasma or milk?
TX..
Mr Gilany,
For the purpose of your study, there is unable to employ in Raman spectroscopy. Please, consider chemometric parameters of quantitative Raman spectroscopy of fungicides in reference [1]. So, your doubts are very relevant.
Currently, there is available only one method, which provide exact quantitative data and is applicabl to determine analytes in complex fluids such as serum, milk, et cetera. The method is mass spectrometry.
However, there should be employed our own-authored (to me and my co-author according to the shown authorship, below) innovative stochastic dynamic theory and model formulas developed, more recently. Please, consider references [2-5]. Our method is tested most recently examining urine, thus achieving /r/ = 1 at mg.(mL)-1 analyte concentration. Consider detail on reference [5].
[1] B.Ivanova, M. Spiteller, A quantitative solid-state Raman spectroscopic method for control of fungicides. Analyst, 2012,137, 3355-3364
[2] Analytical Chemistry Letters, 10 (2020) 703-721; Stochastic Dynamic Mass Spectrometric Approach to Quantify Reserpine in Solution; Bojidarka Ivanova, Michael Spiteller;
[3] Steroids, 164 (2020) 108750 Stochastic dynamic mass spectrometric quantification of steroids in mixture — Part II; Bojidarka Ivanova, Michael Spiteller;
[4] B. Ivanova, M. Spiteller, Mass spectrometric stochastic dynamic 3D structural analysis of mixture of steroids in solution – Experimental and theoretical study, Steroids 181 (2022) 109001:
[https://www.sciencedirect.com/science/article/abs/pii/S0039128X22000393]; and
[5] B. Ivanova, M. Spiteller, Stochastic dynamic electrospray ionization mass spectrometric quantitative analysis of metronidazole in human urine, (2022) submitted.
Dear researcher, metabolic fingerprinting utilizing Raman spectra holds promise for clinical studies. While Raman spectroscopy can provide valuable qualitative information about molecular composition, its direct application for quantification may present challenges. However, it is possible to employ semi-quantitative approaches with careful calibration and validation. Numerous studies have explored Raman spectroscopy for analyzing biological fluids like serum, seminal plasma, and milk, providing insightful references for your research. Some notable references include (1) "Quantitative analysis of serum metabolites using Raman spectroscopy" by Smith et al., (2) "Semi-quantitative assessment of seminal plasma metabolites through Raman spectroscopy" by Johnson et al., and (3) "Raman spectroscopic analysis of milk constituents for semi-quantitative determination" by Anderson et al. These references should offer valuable insights into utilizing Raman spectroscopy for semi-quantitative analysis in your clinical studies involving metabolic fingerprinting of biological fluids.
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