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Determination of saccharin in pharmaceuticals by high performance thin layer chromatography / Određivanje saharina u farmaceutskim preparatima primenom visoko efikasne tankoslojne hromatografije
(Srpsko hemijsko društvo, Beograd, 2006)
A simple, accurate and selective high performance thin layer chromatographic method for the determination of saccharin in pharmaceuticals has been developed. The chromatography was performed on silica-gel 60F254 plates ...
Determination of quercetin in pharmaceutical formulations via its reaction with potassium-titanyloxalate: Determination of the stability constants of the quercetin-titanyloxalato complex / Određivanje kvercetina u farmaceutskim preparatima preko reakcije sa kalijum-titaniloksalatom - određivanje konstanti stabilnosti kvercetin-titaniloksalatnog kompleksa
(Srpsko hemijsko društvo, Beograd, 2005)
Asimple, rapid and accurate procedure for the quantitative determination of quercetin in its pure form and in formulations has been developed. The method is based on the spectrophotometric determination of a complex formed ...
Protolytic equilibria in homogeneous and heterogeneous systems of ketoconazole and its direct spectrophotometric determination in tablets / Protolitičke ravnoteže u homogenom i heterogenom sistemu ketokonazola i njegovo direktno spektrofotometrijsko određivanje u tabletama
(Srpsko hemijsko društvo, Beograd, 2005)
The acid-base equilibria of a diprotic, slightly hydrosoluble base ketoconazole were studied in homogeneous and heterogeneous water systems. The determinations were performed at 25ºC at a constant ionic strength of M(NaCl). ...
RP-HPLC determination of vitamins, folic acid and B12 in multivitamin tablets / RP-HPLC određivanje vitamina B1, B3, B6, folne kiseline i B12 multivitaminskih tableta
(Srpsko hemijsko društvo, Beograd, 2005)
A simple and sensitive reversed-phase, ion-pair HPLC method was developed and validated for the simultaneous determination of B-group vitamins, thiamine chloride hydrochloride (B1), nicotinamide (B3), pyridoxine hydrochloride ...
Essential oil of Acinos hungaricus (Simonkai) Silic, Lamiaceae
(Allured Publ Corp, Carol Stream, 2004)
Analysis of Acinos hungaricus oil isolated by water distillation of flowering herb was performed using GC and GC/MS. Forty-one constituents were identified, representing 88.8% of total oil with germacrene D (46.7%) as the ...
Theoretical study of phenolic antioxidants properties in reaction with oxygen-centered radicals
(Elsevier Science BV, Amsterdam, 2006)
A dominant transfer mechanism [hydrogen atom transfer (HAT) or proton-coupled electron transfer (PCET)] in the reaction of phenols with certain types of oxygen-centered radicals was selected by examining the conformations, ...
Influence of dissolution media composition on drug release and in-vitro/in-vivo correlation for paracetamol matrix tablets prepared with novel carbomer polymers
(Wiley, Hoboken, 2004)
The influence of dissolution media composition on drug release kinetics and in-vitro/in-vivo correlation (IVIVC) for hydrophilic matrix tablets based on Carbopol 971P and Carbopol 71G was investigated. A number of buffered ...
Immunomodulatory effects of the methanolic extract of Epimedium alpinum in vitro
(Elsevier Science BV, Amsterdam, 2006)
The effect of the methanolic extract of root and rhizome of Epimedium alpinum (MEEA) on phenotype and functions of rat lymphocytes in vitro was studied. It has been found that MEEA at lower concentrations (0.1 mu g/ml and ...
Examinations of cross-linked polyvinylpyridine in open reactor
(Trans Tech Publications Ltd, Durnten-Zurich, 2005)
Macroporous cross-linked copolymer of 4-vinylpyridine and 25% (4: 1) divinylbenzene is analyzed under open conditions, that is in a continuous well-stirred tank reactor (CSTR). With this aim the appropriate bifurcation ...