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Simion IM, Casoni D, Sârbu C. Multivariate color scale image analysis – Thin layer chromatography for comprehensive evaluation of complex samples fingerprint. J Chromatogr B Analyt Technol Biomed Life Sci 2021; 1170:122590. [DOI: 10.1016/j.jchromb.2021.122590] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 01/28/2021] [Accepted: 02/09/2021] [Indexed: 12/30/2022]
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Simion IM, Casoni D, Sârbu C. Classification of Romanian medicinal plant extracts according to the therapeutic effects using thin layer chromatography and robust chemometrics. J Pharm Biomed Anal 2019; 163:137-143. [DOI: 10.1016/j.jpba.2018.09.047] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 09/24/2018] [Accepted: 09/25/2018] [Indexed: 10/28/2022]
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Simion IM, Casoni D, Sârbu C. Characterization and classification of medicinal plants according to their antioxidant profile estimated by thin layer chromatography assisted by chemometric expertise. J LIQ CHROMATOGR R T 2018. [DOI: 10.1080/10826076.2018.1448692] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- Ileana Maria Simion
- Department of Chemistry, Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, Cluj-Napoca, România
| | - Dorina Casoni
- Department of Chemistry, Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, Cluj-Napoca, România
| | - Costel Sârbu
- Department of Chemistry, Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, Cluj-Napoca, România
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Sima IA, Andrási M, Sârbu C. Chemometric Assessment of Chromatographic Methods for Herbal Medicines Authentication and Fingerprinting. J Chromatogr Sci 2018; 56:49-55. [PMID: 28977618 DOI: 10.1093/chromsci/bmx080] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 08/18/2017] [Indexed: 12/16/2022]
Abstract
Nowadays, increasingly more individuals turn to supplementation of the diet with herbal medicines and many such products are marketed lately. Thus the problem that this article focuses on is that these products are not subjected to rigorous quality control like synthetic drugs are, which rises a constant debate whether the supplements actually contain the herb or mixture of herbs that the manufacturer claims they do. As a solution, micellar electrokinetic chromatography and high performance liquid chromatography were investigated in order to fingerprint and authenticate herbal medicines. For this purpose, minimal sample pre-treatment was applied to several fruit based herbal medicines, which were compared with the ethanolic extract of the respective fruit. The holistic evaluation of the electropherograms and chromatograms was made by using appropriate chemometric tools, such as principal component analysis (PCA), cluster analysis and a combination of PCA and linear discriminant analysis (PCA-LDA). The results suggest that the developed method was able to successfully discriminate between different herbal medicines, based on their raw material content. Moreover, this simple and efficient methodology might also be used for routine screening and authenticity control of different products and could be implemented in any quality control laboratory.
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Affiliation(s)
- Ioana Anamaria Sima
- Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, Arany Janos Str., No 11, RO-400028 Cluj-Napoca, România
| | - Melinda Andrási
- Faculty of Science and Technology, University of Debrecen, Egyetem tér 1, 4010 Debrecen, Hungary
| | - Costel Sârbu
- Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, Arany Janos Str., No 11, RO-400028 Cluj-Napoca, România
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Dina NE, Gherman AMR, Chiş V, Sârbu C, Wieser A, Bauer D, Haisch C. Characterization of Clinically Relevant Fungi via SERS Fingerprinting Assisted by Novel Chemometric Models. Anal Chem 2018; 90:2484-2492. [PMID: 29356512 DOI: 10.1021/acs.analchem.7b03124] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
Nonculture-based tests are gaining popularity and upsurge in the diagnosis of invasive fungal infections (IFI) fostered by their main asset, the reduced analysis time, which enables a more rapid diagnosis. In this project, three different clinical isolates of relevant filamentous fungal species were discriminated by using a rapid (less than 5 min) and sensitive surface-enhanced Raman scattering (SERS)-based detection method, assisted by chemometrics. The holistic evaluation of the SERS spectra was performed by employing appropriate chemometric tools-classical and fuzzy principal component analysis (FPCA) in combination with linear discriminant analysis (LDA) applied to the first relevant principal components. The efficiency of the proposed robust algorithm is illustrated on the data set including three fungal isolates (Aspergillus fumigatus sensu stricto, cryptic A. fumigatus complex species, and Rhizomucor pusillus) that were isolated from patient materials. The accurate and reliable discrimination between species of common fungal pathogen strains suggest that the developed method has the potential as an alternative, spectroscopic-based routine analysis tool in IFI diagnosis.
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Affiliation(s)
- Nicoleta Elena Dina
- Department of Molecular and Biomolecular Physics, National Institute of R&D of Isotopic and Molecular Technologies , 67-103 Donat, 400293 Cluj-Napoca, Romania
| | - Ana Maria Raluca Gherman
- Department of Molecular and Biomolecular Physics, National Institute of R&D of Isotopic and Molecular Technologies , 67-103 Donat, 400293 Cluj-Napoca, Romania.,Faculty of Physics, Babeş-Bolyai University , 1 Kogălniceanu, 400084 Cluj-Napoca, Romania
| | - Vasile Chiş
- Faculty of Physics, Babeş-Bolyai University , 1 Kogălniceanu, 400084 Cluj-Napoca, Romania
| | - Costel Sârbu
- Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University , 11 Arany Janos, 400028 Cluj-Napoca, Romania
| | - Andreas Wieser
- Max von Pettenkofer-Institut für Hygiene und Medizinische Mikrobiologie, Ludwig-Maximilians-University ; Marchioninistrasse 17, 82377 Munich, Germany.,Division of Infectious Diseases and Tropical Medicine, Medical Center of the University of Munich (LMU) , Leopoldstrasse 5, 80802 Munich, Germany.,German Center for Infection Research (DZIF) , partner site Munich, 80802 Munich, Germany
| | - David Bauer
- Chair for Analytical Chemistry, Institute of Hydrochemistry, Technische Universität München , Marchioninistrasse 17, 81377 Munich, Germany
| | - Christoph Haisch
- Chair for Analytical Chemistry, Institute of Hydrochemistry, Technische Universität München , Marchioninistrasse 17, 81377 Munich, Germany
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