J. Planar Chromatogr. 28, 42-47 (2015). HPTLC of (1) homoeriodictyol and (2) persicogenin in the methanol extract of the aerial parts of Rhus retinorrhoea and Rhus tripartita on silica gel with toluene - ethyl acetate - methanol 16:4:1. Quantitative determination by absorbance measurement at 293 nm. The hRF values of (1) and (2) were 30 and 48. Linearity was between 100 and 800 ng/zone for both, (1) and (2). The intermediate intra-day and inter-day precisions were below 2 % (n=6). The LOD and LOQ were 26 and 77 ng/zone for (1) and 31 and 92 ng/zone for (2), respectively. Recoveries were in the range of 98.9-99.5 % for (1) and 98.3-99.2 % for (2).

J. Planar Chromatogr. 28, 67-73 (2015). HPTLC of (1) rifampicin, (2) isoniazid and (3) piperine on silica gel with toluene – methanol – chloroform 7:3:3. Quantitative determination by absorbance measurement at 300 nm. The hRF values of (1) to (3) were 51, 24 and 81, respectively. Linearities were between 100 and 700 ng/zone for (1) and (2) and between 20 and 90 ng/zone for (3). The intermediate intra-day and inter-day precisions for (1) to (3) were below 2 % (n=6). The LOD and LOQ were 12 and 33 ng/zone for (1), 20 and 53 ng/zone for (2) and 5 and 10 ng/zone for (3). Recoveries for (1) to (3) were in the range of 99-101 %.

Phytochemistry 106, 94-103 (2014). HPTLC of corosolic acid in Lagerstroemia speciosa on silica gel with ethyl acetate - methanol 49:1. Detection by spraying with anisaldehyde reagent. Quantitative determination by absorbance measurement at 580 nm. The hRF value of corosolic acid was 47. Linearity was between 20 and 100 ng/zone. The intermediate precisions were below 2 % (n=3).

Chinese J. Inform. Trad. Chinese Med. 20 (5), 67-69 (2013). Yinao Huoxue Keli granule is a TCM compound for the treatment of hemiplegia, numbness of limbs, deviation of mouth and tongue. For quality control, HPTLC on silica gel (1) for Salvia miltiorrhiza Bunge with chloroform – acetone – formic acid 8:1:1, detection by spraying with 3 % ferric chloride in 2 N hydrochloric acid – water 1:100 and heating at 105 °C until the spots were visible, identification by fingerprint comparison with the standard protocatechuic aldehyde and the standard ingredient drug; (2) for Panax quinquefolius L., ginsenoside Re, Rb1 and pseudoginsenoside F11 with the lower phase of chloroform – ethyl acetate – methanol – water 15:40:22:10 placed at 5-10 °C for 12 h, detection by spraying with 10 % sulfuric acid in ethanol and heating at 105 °C until the spots were visible.

J. Liq. Chromatogr. Relat. Technol. 38, 1392-1406 (2015). HPTLC of Cordyceps sinensis and Ganoderma lucidum on silica gel with ethyl acetate - dichloromethane - formic acid - glacial acetic acid - methanol 10:10:1:1:2. Qualitative identification at UV 254 nm and UV 366 nm. Hyphenation of electronspray ionization/mass spectrometry with HPTLC facilitated fast and convenient profiling of the metabolites in the extracts. For the chemometric analysis, raw and column data matrices were constructed using hRF datasets.

TrAC 66, 146-157 (2015). Review of common analytical techniques and methods for the analysis of adulterants of essential oils. HPTLC methods for the analysis of numerous samples, such as Clary sage, Mint, Neroli, Niaouli and Thyme essential oils are referenced.

J. Planar Chromatogr. 28, 472-475 (2015). HPTLC of 17α-ethinylestradiol (extracted from water samples using a monolithic stir-bar) on RP-18 with methanol - acetonitrile - water 2:2:1. Detection by heating at 110 °C for 10 min followed by dipping into a mixture of sulfuric acid 98 % in water 1:49 for 1 s. After dipping the plate was heated again to 110 °C for 10 min. The hRF value for 17α-ethinylestradiol was 51.

Braz. J. Microbiol. 46, 103-111 (2015). TLC of 2,4,6-trinitrotoluene (1) and two degradation intermediates with nitrite release into the medium by Pseudomonas aeruginosa, 2,4-dinitrotoluene (2) and 4-aminodinitrotoluene (3) on silica gel with ethyl acetate - hexane 2:3. Identification under UV light at 254 nm. The hRF values for (1) to (3) were 83, 67 and 50, respectively.