Cucurbit[7]uril inclusion complexation as a supramolecular strategy for color stabilization of anthocyanin model compounds.
Host-guest complexation with cucurbit[7]uril of anthocyanin model compounds in which acid-base equilibria are blocked resulted in essentially complete stabilization of their color. The color protection is a thermodynamic effect and establishes a strategy to stabilize these colored compounds at pH values of interest for practical applications.
Instituto de Química, Universidade de São Paulo, C.P. 26077, São Paulo 05513-970, Brasil.
Barbara
B
Held
Hao
H
Tang
Palani
P
Natarajan
Cassio Pacheco
CP
da Silva
Volnir
V
de Oliveira Silva
University of Victoria.
Cornelia
C
Bohne
Universidade de São Paulo.
Frank H
FH
Quina
D000136:Acid-Base Equilibrium; D000872:Anthocyanins / Q000737:chemistry*; D001952:Bridged-Ring Compounds / Q000737:chemistry*; D003116:Color; D007093:Imidazoles / Q000737:chemistry*; D015394:Molecular Structure; D055668:Photochemical Processes; D013057:Spectrum Analysis; D013816:Thermodynamics; D014867:Water / Q000737:chemistry; D047028:Macrocyclic Compounds; D000099246:Cucurbit(n)urils
D000872:Anthocyanins; D001952:Bridged-Ring Compounds; D007093:Imidazoles; D014867:Water; C456276:cucurbit(7)uril; D047028:Macrocyclic Compounds; D000099246:Cucurbit(n)urils