PLoS ONE 18(11), e0294054 (2023). Sample was a pigment extracted with methanol from cell pellets of Serratia marcescens strain BRL41 (Yersiniaceae). TLC on silica gel with ethyl acetate. Detection under daylight. The pink pigment had the same hRF value (87) and colour as prodigiosin from standard strain ATCC-13880.

Heliyon 6(8), e04654 (2020). HPTLC of ethanolic extracts of three algae (100µg/band) on silica gel, along with carotenoid standards (10µg/band), developed with toluene – acetone 7:3. Detection under white light. Carotenoids appeared orange or yellow, chlorophylls green, pheophytins dark khaki. Carotenoid patterns of the algae were very different depending on the family: red alga Eucheuma denticulatum (Solieriaceae) contained mainly zeaxanthin and lutein (hRF 44) and β-carotene (hRF 88), but also β-cryptoxanthin (hRF 69-71) and fucoxanthin (hRF 39); brown alga Sargassum polycystum (Sargassaceae) contained mainly fucoxanthin, and also cryptoxanthin; green alga Caulerpa lentillifera (Caulerpaceae) contained mainly zeaxanthin, but also astaxanthin (hRF 61) and canthaxanthin (hRF 77) in smaller amounts. Separately, HPLC-MS was used to confirm and quantify these compounds, which was necessary for carotenoids with similar hRF values: zeaxanthin and lutein (hRF 44), and β-carotene and lycopene (hRF 88).

J. Chromatogr. 369. 227-230 (1986). TLC for separation, detection and characterization of trace levels of porphyrins e.g., Ni uroporphyrin, Cu uroporphyrin and Ni protoporphyrin dimethyl ester. Application of Raman resonance spectroscopy. Comparison of the Raman spectra obtained from planar surfaces with spectra in solution. Discussions of the advantages and disadvantages of the technique. Metallo porphyrins, TLC/resonance Raman spectroscopy.

J. Planar Chromatogr. 13, 166-170 (2000). TLC of tetrahydroxy and tetraalkoxy derivatives of tetraphenylporphyrines and tetra-(3-methoxyphenyl)porphyrin on silica gel and RP 18 with eleven organic binary mobile phases. After drying the spots were detected visually. Gutman and Randicc topological indexes were calculated for the porphyrin derivatives.

The Rf values of 6 compounds were given. The procedure is suitable for the separation of aminophenyl porphyrins which are similar in structure and nature.

J. Planar Chromatogr. 14, 449-453 (2001). Preparation of complexes of hydroxy- and alkyloxytetraphenylporphyrins with Cu(II), Zn(II), and Ni(II) and investigation of their chromatographic behavior in adsorption and partition chromatography. The correlation between topological indexes and the screening effect and chromatographic retention was studied. TLC of 30 metalloporphyrins on silica gel and RP-18 with carbon tetrachloride - chloroform and methanol - chloroform, respectively, in different volume proportions. Good separations were obtained by use of silica gel with carbon tetrachloride - chloroform 1:1 and on RP-18 with methanol - chloroform 2:3.

J. Planar Chromatogr. 1, 214-219 (1988). Ion-pair TLC on octadecyl-bonded silica with buffered mobile phase containing N-cetyl-N,N,N,-trimethylammonium bromide as ion- pair reagent. Detection under UV 366 nm. Quantification by fluorodensitometry at 404 nm. Detection limit, 10 fmol. The calibration curves of all 6 substances were linear between 0.15 and 3 pmol. r = 0.999. The repeatability of the results from one plate to another was good.

J. Planar Chromatogr. 15, 383-386 (2002). TLC of 7 meso-tetraphenylporphyrin derivatives on silica gel, alumina, cellulose, polyamide and on RP-phase with Cu(II) and chiral reagent with 26 different mobile phases. Detection by visual inspection.