J. Planar Chromatogr. 29, 108-112 (2016). HPTLC of water-soluble vitamins (B1, B2, B6, C, and B12), amino acids and β-blocker enantiomers (carvedilol, (S)-(−)-propranolol hydrochloride, (±)-propranolol hydrochloride, and (±)-sotalol hydrochloride) on novel core–shell polymers consisting of hyperbranched (poly(ethyleneimine)) core surrounded by oligosaccharide shell (PEI-OS) as a component of the silica gel phase. The influence of the weight of the hyperbranched PEI core (5 and 25 kDa) was investigated. β-blocker enantiomers were separated using acetonitrile - methanol 7:3. PEI-maltose and PEI-lactose were the most effective polymers for the chiral separation of β-blockers.

Hawksw & P. James. Quim. Nova. 39, 456-461 (2016). HPTLC of chloratranorin (1), atranorin (2), ursolic acid (3), 2'-O-methylphysodone (4), physodic acid (5), physodalic acid (6) and physodic acid (7) in Hypogymnia tavaresii on silica gel with toluene – acetic acid 17:3. Detection by spraying with sulfuric acid – acetic acid – water 1:20:4, followed by heating at 120 °C for 20 min. The hRF values of compunds (1) to (7) were 76, 74, 49, 33, 20, 19 and 18, respectively.

Phytochemistry. 124, 68-78 (2016). HPTLC of polar lipids in ten species of microalgae included in two main linages (Plantae and Chromista) on silica gel with methyl acetate – isopropanol – chloroform – methanol – 0.25 % potassium chloride 25:25:25:10:4. Detection of phosphorous containing lipids by spraying with molybdenum reagent (molybdenum trioxide and metallic molybdenum in concentrated sulfuric acid followed by dilution with water). Those bands that gave negative response to the molybdenum reagent and migrate according to betaine lipid references from Chlamydomonas reinhardtii and Pavlova lutheri were subsequently visualized with iodine solution and scratched off. These isolated betaine lipids were eluted with 5 mL of chloroform – methanol 2:1.

J. Planar Chromatogr. 29, 203-208 (2016). HPTLC of bacoside A in Bacopa monnieri on silica gel with ethyl acetate – methanol – water – butanol 160:25:16:5. Detection by spraying with anisaldehyde – sulfuric acid reagent followed by heating at 105 °C for 5 min. Quantitative determination by absorption measurement at 525 nm. Linearity was in the range of 160-480 ng/zone. Intermediate precisions were below 1.3 %. The LOD and LOQ were 40 and 120 ng/zone. The method was performed to check the chemical diversity in Bacopa in relation to bacoside A.

J. Planar Chromatogr. 29, 221-226 (2016). HPTLC of malathion (1) and fenthion (2) in apple and orange juice on silica gel with n-hexane – acetone 3:2. Detection by spraying with 6 % sodium azide, 0.25 % starch, pH 6.5 for (1) and 0.5 % sodium azide, 2 % starch,_x000D_ pH 6.0 for (2), followed by exposure to iodine vapors for 15 s. The chromatograms were scanned at 300 dpi. The hRF values for (1) and (2) were 51 and 48, respectively. Linearity was in the range of 1.0-7.3 μg/zone for (1) and 2.5-24.8 μg/zone for (2). Intermediate precisions were below 3.1 %. The LOD and LOQ were 242 and 807 ng/zone for (1) and 588 and 1960 ng/zone for (2), respectively. Recovery was in the range of 94.8-105.4 % for (1) and 84.2-104.0 % for (2).

Food Control. 72, 145-152 (2017). The paper discussed five important adulteration events that occured in Taiwan between 2011 and 2015, including a review of analytical methods developed by the Taiwnan Food and Drug Administration to investigate these incidents, including HPTLC methods for the detection of copper chlorophyll, Cu-pyropheophytin A, from slurry green dyes obtained from edible oils. _x000D_
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J. Planar Chromatogr. 29, 330-335 (2016). HPTLC of wedelactone in Eclipta alba, Wedelia calendulacea and Wedelia trilobata on silica gel with toluene – chloroform – ethanol – formic acid 10:8:2:1. Quantitative determination by absorbance measurement at 351 nm. The hRF value for wedelactone was 29. Linearity was between 80 and 280 ng/zone. The intermediate precision was below 2.5 % (n=3). The LOD and LOQ was 0.36 and 1.09 ng/zone, respectively. Recoveries were between 99.4 and 100.3 %.

Food Control. 68, 220-228 (2016). HPTLC of biogenic amines (putrescine, histamine, tyramine and agmatine) in microbial cultures on silica gel with chloroform – benzene – triethylamine 12:9:2. Quantitative determination by absorbance measurement at 254 nm.