20.500.12556/DiRROS-7741 Določitev galne kisline, pirokatehola, floroglucinola, resorcinola in katehinas tankoplastno kromatografijo Thin-layer chromatography of gallic acid, pyrocatehol, phloroglucinol, resorcinol and catechin Preučevali smo primernost šestih različnih zmesi topil - razvijalcev za ločitev enostavnih fenolnih spojin, kot so galna kislina, pirokatehol, floroglucionol, resorcinol, in sorodno spojino katehin s pomočjo tankoplastne kromatografije. Kot najbolj primerna sistema topil za ločitev komponent na stacionarni fazi silikagela na aluminijasti foliji sta se izkazala kloroform -etilacetat - ocetna kislina (prostorninsko razmerje; 50 : 50 : 1) in toluen -acetonitril - mravljična kislina (prostorninsko razmerje; 70 : 30 : 1). Ločitev organskih spojin je bila učinkovitejša v sistemih topil, ki so imeli večji delež organskih topil. Spojine smo vizualizirali s pomočjo dveh reagentov, in sicer z železovim(III) kloridom in z vanilin-žveplovim reagentom. The suitability of six solvent systems for the thin-layer chromatographic separation of simple phenolic compounds such as gallic acid, pyrocatechol phloroglucinol, resorcinol and related compound catechin were investigated. The most appropriate developing solvent systems for the separation of these organic compounds were chloroform - ethyl acetate - acetic acid (50 : 50 : 1) and toluene -acetonitrile - formic acid (70 : 30 : 1). The best separation of the five organic compounds was achieved using solvents with higher organic content. Detection was carried out using ferric chloride reagent and vanillin-sulphuric reagent. les estraktivi fenolne spojine katehin TLC true false true Slovenski jezik Angleški jezik Znanstveno delo 2017-07-12 09:19:16 2017-07-12 09:19:16 2022-08-16 09:24:55 0000-00-00 00:00:00 2011 0 0 str. 3-9 Vol. 95 2011 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 630*84(045)=163.6 0351-3114 URN:NBN:SI:doc-NXQI2ZLR 3256486 6206978 RAZ_Poljansek_Ida_i2011.pdf RAZ_Poljansek_Ida_i2011.pdf 1 425E342A28C74DCCF11BECDA6BE5A163 8c6391f07dba77001f62d3eedcff7e518bc1e68a103a29eb4660ce3422f52f47 26c6ec24-17b5-11ed-b6b8-001a4af901a5 20.500.12556/dirros/e416b3e4-6b28-4657-869d-01b75668af8f https://dirros.openscience.si/Dokument.php?lang=slv&id=9606 Gozdarski inštitut Slovenije Acta Silvae et Ligni 0 0 0