o:965 Proučavanje efekta pH na strukturu, boju i spektralne karakteristike cijanidina i cijanidin 3-0-ß-glukopiranozida i ispitivanje njihove interakcije sa modelima lipidnih membrana : doktorska disertacija Applied chemistry and biochemistry;The investigation og pH effects on the structure, colour and spectral characteristics of cyanidin and cyanidin 3-0-ß-glucopyranoside and the examination of their interactions with lipid model membranes. sr The relationships between structure, spectral characteristics, and colour of the aglycone moiety of cyanidin and its 3-glucosidic substitution in cyanidin 3-O- β-glucopyranoside were studied as a function of pH, using a combination of techniques (UV-Vis spectrophotometry, colorimetry, and HPLC-ESI/MS). The absorption and fluorescence emission spectra of cyanidin and Cy3Glc at pH 5.5 in aqueous solution have been studied. The colour variation, colour intensity and stability at various pH values (2.0, 4.0, 7.0 and 9.0) of cyanidin and Cy3Glc were investigated during a period of 8 hours storage at 25 ± 0.1ºC, as well as, in the aqueous solution at pH 7.0 and under the conditions of the elevated temperature (55.0 ± 0.1ºC) which simulate the rapid food ageing. The interactions of cyanidin and Cy3Glc with model lipid membranes differing in surface charge and phase state were investigated using DSC and fluorescence emission polarization spectrometry. Umnoženo za odbranu. Univerzitet u Nišu, Prirodno-matematički fakultet, Departman za hemiju, 2014. Bibliografija: listovi 268-278. Rezime ; Summary. 1024887273 91552101 1916 91552100 1024887273 2015-08-31T14:11:49.053Z 45 no 46 mentor Violeta P. 1974- Rakić 2014 63 mentor Milena N. 1960- Miljković 2014 63 član komisije Danijela 1969- Kostić 2014 63 član komisije Dušan Sokolović 2014 63 član komisije Nataša Poklar Ulrih 2014 PDF/A (310 listova) 15489540 http://phaidrabg.bg.ac.rs/o:965 no yes 4 2015-08-31T14:11:49.320Z 70 Cijanidini, antocijanidini, antocijanini, cijanidin 3-О-β-glukopiranozid, modeli membrana, UV-Visapsorcioni spektri, HPLC-ESI/MS, fluorescentniemisijski spektri, diferencijalna skenirajućakalorimetrija, fluorescentna emisionapolarizaciona spektrometrija, CIELAB parametri,boja. anthocyanidins, anthocyanins, cyanidin, cyanidin 3-O-β-glucopyranoside, model membranes, UV-Vis absorptionspectra, HPLC-ESI/MS, fluorescence emission spectra,differential scanning calorimetry, fluorescence emissionpolarization spectrometry, CIELAB parameters, colour 66 54 1738 18A07 18A0703 2014