Title
Impact of location, type, and number of glycosidic substitutions on the color expression of o-dihydroxylated anthocyanidins
Date Issued
01 December 2018
Access level
metadata only access
Resource Type
journal article
Author(s)
Sigurdson G.T.
Robbins R.J.
Collins T.M.
The Ohio State University
Publisher(s)
Elsevier Ltd
Abstract
Anthocyanins express many hues depending on environmental factors and structural aspects, of which aglycone structure and acylation have been considered most impactful. Effects of different glycosylations on anthocyanins’ colors are less known. Twelve cyanidin and 3-deoxy-cyanidin (luteolinidin) derivatives were isolated from red cabbage and black carrot hydrolysates and from black sorghum, diluted in pH 1–9, and analyzed by spectrophotometry and colorimetry. Location, number, and structure of glycosylations affected λ max and spectral shape of o-dihydroxylated anthocyanins, playing important roles on color expression. Generally, glycosylation of cyanidin decreased its λ max (≤27 nm), greatest decreases by 3-monoglycosylation. All cyanidin-glycosides appeared red in pH 1–3 and paled in pH 4–6. However, cyanidin-3-glycosides did not decolor completely like 3,5-glycosides. In alkaline pH, glycosylation patterns affected color more greatly: Cy-3-glycosides expressed maroon-purple hues (300–20°), 5-glycosides were green (100–115°), and only 3,5-glycosides expressed blue (240–250°). Luteolinidin derivatives shifted from yellow to red–purple hues with increasing pH.
Start page
416
End page
423
Volume
268
Language
English
OCDE Knowledge area
Protección y nutrición de las plantas
Scopus EID
2-s2.0-85049021195
PubMed ID
Source
Food Chemistry
ISSN of the container
03088146
Sponsor(s)
The authors would like to thank Mars Wrigley Confectionery, NJ, U.S.A. for graciously funding this research work. The authors would also like to thank Nu Life Market LLC for providing the black sorghum bran to conduct portions of this work.
Sources of information: Directorio de Producción Científica Scopus