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  • 1 Hungarian Academy of Sciences Plant Protection Institute P.O. Box 102 H-1525 Budapest Hungary
  • | 2 University of Los Andes Faculty of Pharmacy Mérida ZP-5101-A Venezuela
  • | 3 University of West Hungary Institute of Chemistry P.O. Box 132 H-9400 Sopron Hungary
  • | 4 University of Portsmouth School of Pharmacy and Biomedical Sciences St Michael’s Building, White Swan Road Portsmouth PO1 2DT UK
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Optimum-performance laminar chromatography (previously known as overpressured-layer chromatography; OPLC) exploits the advantages of the optimum laminar flow of mobile phase obtained by use of pump to introduce the mobile phase to the adsorbent layer in an automated, microprocessor-controlled separation system. The optimized flow profile in OPLC is the basis of the efficiency of this new technique. The attractiveness of OPLC is particularly apparent from the width of the separation surface (large number of samples). OPLC has enabled improvement of the velocity profile with a decrease in eddy diffusion.OPLC can be used for efficient separation of formaldehyde (HCHO) and some betaines, potential HCHO generators, in macroscopic fungi. Endogenous HCHO is determined, after conversion to formaldemethone, and characterized from proton magnetic resonance spectroscopic ( 1 H NMR) and electron-impact mass spectrometric (EIMS) data. The results show that macroscopic fungi contain moderate levels of HCHO compared with, for example, the leaves of certain higher plant species. Among the betaines, l-carnitine and glycinebetaine were identified by matrix-assisted laser-desorption ionization mass spectrometry (MALDI MS), 1 H NMR spectroscopy, and OPLC. Data prove that automated OPLC, a new separation technique, is suitable for efficient separation of natural substances from a large number of samples in one separation; it is, therefore, a prospective complementary methodological direction among separation techniques.

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  • I. KLEBOVICH (Budapest, Hungary)
  • T. KOWALSKA (Katowice, Poland)
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  • E. MINCSOVICS (Budapest, Hungary)
  • D. NUROK (Indianapolis, IN, USA)
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  • J. K. RÓŻYŁO (Lublin, Poland)
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Address: P.O. Box 245. H-1519 Budapest, Hungary
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Journal of Planar Chromatography - Modern TLC
Language English
Size A4
Year of
Foundation
1988
Volumes
per Year
1
Issues
per Year
6
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 0933-4173 (Print)
ISSN 1789-0993 (Online)

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