Trends Anal. Chem. 78, 84-94 (2016). Review on clean-up and recent advances in analysis of biogenic amines (BAs) in human body and dairy products of foodstuffs. TLC coupled with mass espectrometry was described as a common analytical technique used for analysis of BAs. Commonly used derivatizing reagents for chromatographic analysis of BAs were also described.

J. Chromatogr. A 1432, 140-144 (2016). 2-Aminoacetophenone (AAP) is closely correlated with the appearance of the sensory phenomenon of untypical aging off-flavor (UTA) in wine and is generally analyzed by GC/MS after being extracted from wines by liquid-liquid, solid-liquid or solid phase microextraction. Presentation of a rapid, selective and sensitive method for the determination of AAP in wine by HPTLC of the extracts, obtained by liquid-liquid extraction with t-butyl methyl ether followed by a basic cleanup, on amino layer with methylene chloride – toluene 7:3. Detection by dipping into n-hexane-paraffin solution and quantification by densitometry at 366/>400 nm using 2-amino-4-methoxyacetophenone as internal standard. The LOD and LOQ were 0.1 and 0.3 μg/L, respectively. The recovery was near 100 % for model, white and red wines, while AAP concentrations were >0.5 μg/L in UTA. The results indicated that the method enables the analysis of AAP in wines clearly below the odor thresholds and represents a rapid and convenient screening alternative to existing GC/MS methods.

Food Res. Int. 88, 263-275 (2016). TLC of residual triacylglycerides, diacylglycerides, monoacylglycerides and free fatty acids in raw and pasteurized human milk on silica gel with heptane – diethyl ether – acetic acid 55:45:1, followed by drying at 150 °C for 15 min. Quantitative determination by flame ionization._x000D_

Innov. Food Sci. Emerg. Technol. 45, 361-381 (2018). Review of novel food processing technologies on the retention of polyphenols, including HPTLC methodologies for the study of the effect of pulse electric field treatment and microwave processing on polyphenols such as chlorogenic acid, cinnamic acid, catechin, rutin and quercetin.

A review. Food Chem. 254, 377-389 (2018). Review of extraction and purification methods for Lycium barbarum polysaccharides, including chemical characterization and evaluation of hypoglycaemic and hypolipidaemic effects. HPTLC methods were described to determine monosaccharide composition and map the glycidic component of glycoconjugates.

J. AOAC Int. 3, 686-694 (2018). HPTLC of 11 chemical dyes, namely, Sudan I (1), II (2), III (3), and IV (4); 808 Scarlet (5); Sudan Red 7B (6); malachite green (7); Basic Orange 2 (8); auramine (9); Orange II (10); and erythrosine (11) in traditional Chinese medicine raw materials and Chinese patent medicines on silica gel with cyclohexane – trichloromethane 7:3 saturated with ammonia vapor for the separation of (1) to (8). The plate was developed a second time in the same direction with ethyl acetate – alcohol – water – aqueous ammonia 16:4:2:1 for (9) to (11). Quantitative evaluation by densitometry from 200 to 700 nm. The hRf values for (1) to (11) were 74, 78, 74, 68, 44, 23, 8, 2, 56, 28 and 20, respectively. The LODs were 2 to 3 ng/zone, except for (6) 10 ng/zone. HPTLC combined with ESI-MS was assessed for proof of the effective separation of dyes and their identification in herbal matrices.

J. AOAC Int. 101, 1397-1401 (2018). HPTLC of sudan red dyes, namely Sudan orange G (1), Sudan red G (2), Sudan I (3), Sudan II (4), Sudan III (5) and Sudan IV (6) in spices and spice mixtures on RP-18 acetonitrile – methanol – aqueous ammonia solution (25 %) 40:9:1. Quantitative determination using a flatbed scanner with a 16-bit resolution. The hRF values for (1) to (6) were 54, 48, 57, 35, 26 and 17, respectively. Linearity was between 20 and 500 ng/zone for (1) to (6). LOD and LOQ were 17 and 35 ng/zone for (1), 11 and 21 ng/zone for (2), 14 and 31 ng/zone for (3), 12 and 24 ng/zone for (4), 18 and 42 ng/zone for (5) and 16 and 37 ng/zone for (6), respectively.

Mikrochimica Acta (Wien) II, 47-52 (1984). TLC separation of nitrate from other inorganic ions on silica with ethyl acetate - acetone - methanol 3:1:1 and detection after conversion of nitrate into nitrosyl chloride, and subsequent reaction with beta-hydroxyquinoline and p-amino sulfonic acid (detection limit 5 ng). 55 anions and cations have been shown not to interfere.