Chinese J. of Food & Drug 14 (7), 284-286 (2012). Kexian capsules are a herbal TCM preparation for treating epilepsy and phlegm blockage syndrome. For quality control TLC, on silica gel 1) for Gambir plant, with toluene – chloroform – acetone – concentrated ammonia – methanol 20:25:15:4, detection under UV 366 nm; 2) for Borneol, with petroleum ether (60-90 °C) – ethyl acetate – chloroform 11:1:3, detection by spraying with 1 % vanillin in sulfuric acid – ethanol 1:200 and heating at 105 °C, viewing in daylight. Quantification of cholic acid by UV spectrophotometry.

J. Anhui Med. & Pharm. 17 (2), 202-203 (2013). Banlangen granule, processed of Radix Isatidis, is a traditional Chinese herbal medicine prescribed clinically to treat sore throat, cheek swelling, acute and chronic tonsillitis and mumps. For quality control a method for the determination of leucine, a main antiviral effective component, is presented. TLC on silica gel with n-butanol – glacial acetic acid – water 19:5:5, detection by spraying with 0.1 % ninhydrin in acetone, heating at 105 °C and viewing in daylight. Quantification by densitometry at 509 nm. Validation of the method by investigation of the linearity range (0.10-0.90 µg/zone, r = 0.998, n=5), precision (%RSD = 2.8 %, n=6), stability (%RSD = 0.8 %, n=6, towards single lane within one hour), and reproducibility (%RSD = 2.0 %, n=6, within plate). The recovery (by standard addition) was 98.8 % (%RSD = 1.1 %, n=6).

Food Chem. 151, 554-560 (2014). HPTLC of flavokavins A, B and C in the roots of kava (Piper methysticum) on silica gel with hexane - dioxane 4:1. Identification by absorbance measurement at 366 nm. Ratios between flavokavins (FKA, B, C) and kavalactones allowed an unambiguous identification of the cultivar noble kava and exclusion of two-days kava in exported material.

J. of Guangzhou Chem. Engin. 41 (9), 146-147 (2013). Shuangxiang Hewei capsules are a herbal TCM preparation and contain Pogostemon cablin (Blanco) Benth. as the key drug, which is used for treatment of anorexia, vomiting, gastric distention, and limb weakness. For quality control through identification of the key drug Pogostemon cablin, TLC of the drug extracts and the standard patchouli alcohol on silica gel with cyclohexane – acetone 10:3, detection by spraying with 5 % vanillin in sulfuric acid – ethanol 1:4 and heating at 105 °C until the zones are visible in daylight.

Chinese J. of Inform. on TCM 20 (7), 52-54 (2013). Yangxue Yishen capsules are a herbal TCM preparation for treating rough skin, blood scale disease, alopecia areata and neurodermatitis. For quality control, TLC on silica gel 1) for Gastrodia elata Blume and the standard gastrodine, with chloroform – ethyl acetate – methanol – formic acid 80:10:30:1, detection by spraying with 10 % phosphomolybdic acid in ethanol and heating at 110 °C until the zones are visible in daylight; 2) for Epimedium davidii Franch and the standard icariin, with benzene – methanol – glacial acetic acid 45:8:4, detection by spraying with 10 % aluminium chloride in ethanol and letting stand for 40 min at room temperature, evaluation under UV 366 nm; 3) for Salvia miltiorrhiza and the standard protocatechuic aldehyde, with chloroform – acetone – formic acid 25:10:4, detection by exposure to ammonia vapors for 15 min and viewing under UV 254 nm. Quantification of astragaloside A by HPLC-ELSD.

Chinese J. of Ethnomed. & Ethnopharm. 23, 51-52 (2012). Shengjing Yusi capsule is a herbal TCM preparation for treating male infertility. For quality control, TLC on silica gel 1) for Epimedium davidii Franch, with chloroform – methanol – water 13:7:2, detection under UV 366 nm; 2) for Fructus Schisandrae Chinensis, with petroleum ether (30-60°C) – ethyl acetate – formic acid 15:5:1, detection by spraying with 5 % phosphomolybdic acid in ethanol and heating at 105 °C until the zones are visible in daylight.

J. Liq. Chromatogr. Relat. Technol. 37, 1837-1846 (2014). HPTLC of ivabradine on silica gel and RP-18 with 0 % to 100 %, mixtures of non-aqueous and buffered binary mobile phases. Thermodynamic estimations from the analysis of the temperature dependence of retention factor allowed to study the chromatographic behavior of ivabradine and conclude the electrostatic nature of the molecular interactions with the system._x000D_

CBS 112, 2-4 (2014). TLC and HPTLC of chamomile (Matricaria recutita L.) flowers and standards herniarin, umbelliferone, alpha-bisabolol, and spiroethers on silica gel with chloroform - acetone 99:1 or dichloromethane up to 90 mm (TLC) and 75 mm (HPTLC). Detection under UV 254 and 366 nm and after dipping in vanillin reagent (0.4 % ethanolic vanillin solution with 2 % sulfuric acid) or DPPH radical reagent (0.02 % methanolic 2,2-diphenyl-1-picrylhydrazyl) for information on radical scavenging activity. Biological detection by dipping individually in a suspension of Bacillus subtilis, Aliivibrio fischeri, Pseudomonas syringae pv. maculicola and Xanthomonas vesicatoria. The essential oil component chamazulene showed the strongest antioxidative capacity.