Planta Med. 53, 546-548 (1987). TLC on silica with the organic layer of ternary or quaternary solvent systems. The method is applied for the selection of eluents for rotation locular counter-current chromatography (RLCC) and for the analysis of the separated fractions. Suitable solvent systems are given: chloroform - methanol - n-propanol - water 5:12:1:8; 9:12:1:8; chloroform - methanol - water 43:37:20; ethyl acetate - n-propanol - water 4:2:7; n-butanol - n-propanol - water 2:1:3.

J. Chinese Anal. Chem. (Fenxi Huaxue) 29 (4), 484-488 (2000). TLC on silica gel with a mixture of propanol, chloroform, and NH3. Identification by matrix-assisted laser desorption/ionization-time-of flight-mass spectrometry (MALDI-TOF-MS). Quantification by TLC/FID. Discussion of use of the method for the quality control of the product.

Sz. Nyiredy, A. Kakuk (eds.): Planar Chromatography 2000, Lillafüred, Hungary, 24-26 June 2000, Res. Inst. for Med. Plants, p. 121-132. A variety of modes of multidimensional separation in TLC are shown. Two-dimensional or multidimensional planar chromatography, two-dimensional development on bilayers, coupled layers with stationary phases of decreasing polarity and combination of multidimensional planar chromatographic methods are demonstrated. The greatest strength of multidimensional separation is that compounds are distributed widely over two-dimensional space of high zone capacity. A zone capacity of ca. 1500 could be achieved. Image analyzers might improve quantitation in future.

J. Chromatogr. 395, 47-53 (1987). Description of an image processing system consisting of a solid state camera, a framestore, and a computer which enables high-resolution images of the plates to be recorded and processed in a variety of ways. To correct for nonuniform illumination, the images of the developed plates are rationed with that of a blank plate. Software allows the images to be enhanced and smoothed, and automatic quantitative analysis to be carried out.

Part 1. Description of the method and basic possibilities. J. Planar Chromatogr. 15, 454-457 (2002). Description of the principle of a novel liquid chromatographic method, fully on-line TLC/HPTLC, which integrates the idea of the continuous development, continuous-flow TLC, and diode-array detection; including the design of the prototype apparatus, and the fundamental advantages of the novel technique. HPTLC and TLC of a test dye mixture on silica gel with dichloromethane. Detection was performed with a new TLC/HPTLC scanner with optical fibers, a special fiber interface and a diode-array detector working in the range of 197 nm to 800 nm with an average optical resolution better than 2.0 nm.

J. Chromatogr. Sci. 54 (7), 1090-1095 (2016). Comparison of the dynamics of peptidization of L-serine (L-Ser), an important proteinogenic amino acid which undergoes spontaneous oscillatory processes of chiral inversion and peptidization with D-Ser and DL-Ser (racemate). The main analytical techniques used in the experiment were TLC-densitometry, HPLC–evaporative light scattering detector and LC–MS. The results showed the differences in peptidization dynamics of the two Ser enantiomers (L and D) and of the racemic mixture thereof (DL) and showed that DL-Ser characterizes with the higher, and L- and D-Ser with the lower peptidization yields.

J. Chromatogr. 438, 329-337 (1988). Description of a method for acquiring identifiable FTIR spectra of well resolved compounds involving the combination of HPLC and TLC, each utilizing different separation modes. Measurement of IR spectra of TLC spots on silica by diffuse reflectance spectrometry. Detection limit, 8 ng.

Phytochemical Analysis 2, 199-203 (1991). TLC of antifungal compounds and crude plant extracts on silica with chloroform - methanol 7:3; HPTLC on diol with chloroform - methanol 98:2 and on RP-18 with chloroform - methanol 8:2. After development, the inocolum of agar with Candida albicans culture was distributed over the plate at 35°C. The bioautograms were sprayed after 12h incubation with an aq. solution of thiazolyl blue (2.5mg/mL). Clear inhibition zones can be observed against a purple background. Method also suitable for the search for antibacterial compounds as shown with Bacillus subtilis as test organism.