Analysis of phenolic components in Croatian red wines from different geographical origins by TLC (CROSBI ID 494843)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa
Podaci o odgovornosti
Rastija, Vesna ; Mornar, Ana ; Jasprica, Ivona ; Srečnik, Goran ; Medić-Šarić, Marica
engleski
Analysis of phenolic components in Croatian red wines from different geographical origins by TLC
Thin-layer chromatography (TLC) method are studied for determination of phenolic compounds in two samples of commercially available wines from the Croatia. Sample preparation method using liquid-liquid extraction with diethyl ether at pH 2.0 was used. Extracts and standard solutions were applied on silica gel 60 F254 TLC plates (20 × 20 cm). The efficiency of eleven mobile phases, used for this purpose, has been tested by three mathematical techniques: calculation of the information content (I) derived from Shannon 's equation ; determination of discriminating power (DP) and formation of clusters and dendrogram. It has been shown that the most favourable mobile phase for separation phenolic compounds in extract of wine “ Frankovka” is benzene-ethyl acetate-formic acid, 30 + 15 + 5 (v/v), while for wine "Merlot" optimal mobile phases are chloroform-methanol-formic acid, 15 + 3 + 2 (v/v) and ethyl acetate-chloroform-formic acid, 24 + 21 + 5 (v/v). Six phenolic compounds have been identified in the tested samples.
flavonoids ; red wines ; TLC ; numerical methods
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
Podaci o prilogu
80-80.
2003.
objavljeno
Podaci o matičnoj publikaciji
5th Balaton symposium : abstracts
Nyiredy, Sz.
Budimpešta: Hungarian society for separation sciences
Podaci o skupu
Balaton symposium (53 ; 2003)
poster
03.09.2003-05.09.2003
Siófok, Mađarska