20.500.12556/RUL-134195 Influence of pH on color variation and stability of cyanidin and cyanidin 3-O-[beta]-glucopyranoside in aqueous solution Influencia del pH en la variación del color y la estabilidad de la cianidina y la cianidina 3-O-[beta]-glucopiranósido en solución acuosa Changes in color and color stability of cyanidin and cyanidin 3-O-β-glucopyranoside (Cy3Glc) in aqueous solutions were investigated at pHs from 0.5 to 13.1, by combination of colorimetry and spectrophotometry. The glucosidic substitution at C-3 of cyanidin (i.e., Cy3Glc), moved the tonalities toward the yellow pole of the chromatic circle, which resulted in high Chroma increases and a hypsochromically shifted visible absorbance maximum (λmax-vis). Under the most acidic and alkaline conditions, cyanidin showed greater Lightness compared with the rest of the pH range. At these extreme pHs, the lower Lightness of Cy3Glc was coupled with a high Chroma value. As a consequence, Cy3Glc showed its most intense color under the most acidic and alkaline conditions, and did not show visually perceptible color at neutral pH. At pH <3 and from pH 10 to11 cyanidin had lower color stability than Cy3Glc. We show the correlations between the data for these color and stability variations for cyanidin and Cy3Glc over the entire pH range. anthocyanins cyanidin cyanidin 3-O-β-glucopyranoside color color stability hue angle chroma lightness barvila antociani cianidin stabilnost raztopin true false false Angleški jezik Španski jezik Članek v reviji 2021-12-28 13:59:05 2021-12-28 13:59:06 2022-09-13 03:53:51 0000-00-00 00:00:00 2021 0 0 Str. 174-182 no. 1 Vol 19 2021 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 547.973:544.35 1947-6337 10.1080/19476337.2021.1874539 49463043 RAZ_Rakic_Violeta_2021.pdf RAZ_Rakic_Violeta_2021.pdf 1 1C88BFFF8050847DE25746929168CEBA d637f4cf9a708e9680d8a546e4f086cc1fd6869fc0e39296debdb578ea5d9915 f3aaa6e8-67de-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=152536 https://www.tandfonline.com/doi/full/10.1080/19476337.2021.1874539 0 ebf80082-67de-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=152535 Biotehniška fakulteta 0 0 0