J. Chromatogr. 280,. 400-403 (1983). TLC of arachidonate metabolites on silica with ethyl acetate - trimethylpentane - acetic acid - water 11:5:2:10 and simple lipids on silica with petrol ether - ether - acetic acid 8:2:3. Detection by spraying with 50 % sulfuric acid and heating at 80 °C and by UV.

Acta Alimentaria 13, 23-38 (1984). TLC of calcium stearyl lactate, palmityl lactic acid, palmitic acid, lactic acid, fatty acid esters on silica with a) petrol ether - ether - acetic acid 50:50:1, b) hexane - ether 7:3. Detection with 0.1% bromophenol blue solution with NH3 Densitometry.

Chem.(BUNSEKI KAGAKU) 34, 346-350 (1985). (Japanese) (Improvement of scanning photoacoustic densitometer for thin-layer chromatography and determination of squalene in human skin surface lipid). Photoacoustic densitometer with a lock-in amplifier with a reference frequency of 80 Hz and a band pass filter of 3 Hz. Detection limits (S/N = 2) of squalene and Sudan Red 7B were 50 ng and 35 ng, resp. Relative SD, 3.7 % for squalene (860 ng) and 3.3 % for Sudan Red 7B (194 ng). Method applied on content of squalene in the human skin surface lipid.

J. Planar Chromatogr. 5, 41-44 (1992). HPTLC of lipids (triolein, oleic acid, cholesterol, 1,3-diolein, 1,2-diolein, monoolein) on silica with hexane – ether – formic acid 60:30:2. Detection by in situ induction of fluorescence by immersion of the developed plate into a mixture of sulfuric acid – absolute ethanol – hexane 1:35:64 and heating at 110 °C for 45 min. Quantification by densitometry in fluorescence mode at 366/>400 nm. Detection limit 30 ng.

J. Chin. Trad. Med. (Zhongguo Zhongyao Zazhi) 20, 162-164 (1995). TLC on silica with isooctane - isopropyl ether - acetic acid - butanol - water 10:5:5:3:1. Detection by spraying with 30% sulfuric acid in ethanol and heating at 105 °C for 15 min. Quantification by densitometry.

Chinese J. Chromatogr. (Sepu) 17, 590-592 (1999). TLC of the cerebral spinal fluid on silica gel with chloroform - methanol - water 65:35:6. Detection by spraying with 100 g/L phosphomolybdic acid in ethanol - chloroform 1:1. Identification of PAF by densitometry at 630 nm.

J. Liq. Chromatogr. Relat. Technol. 31, 1969-1976 (2008). TLC of urethane on spherical silica gel with methyl-t-butyl ether - methanol 7:3. Detection by immersion in a solution of 80 µL cinnamaldehyde in 40 mL acetone with 2.4 mL phosphoric acid followed by heating in an oven at 130 °C for 10 min. The fluorescence can be enhanced by the factor of 2 if the plate is dipped for 4 s into a solution of 10 % polyethylene glycol 600 in methanol. Quantitative determination by absorbance measurement in the range of 445 to 460 nm.

Asian J. of Chem. 21(9), 6999-7004 (2009). HPTLC of ursolic acid in methanolic and aqueous extracts of Ocimum sanctum (Tulsi) on silica gel with toluene - ethyl acetate - acetic acid 55:45:2 with chamber saturation. Detection by treatment with Liebermann Burchard’s reagent. Quantitative determination by absorbance measurement at 550 nm. The method was linear in the range of 100-400 ng/band. The amount of ursolic acid in aqueous and methanolic extracts was in the range of 0.2 and 0.4 %. Samples collected from different geographical regions were compared, samples from Kerala contained the highest levels of ursolic acid.