Cucurbit[7]uril inclusion complexation as a supramolecular strategy for color stabilization of anthocyanin model compounds

Barbara Held; Hao Tang; Palani Natarajan; Cassio Pacheco da Silva; Volnir de Oliveira Silva; Cornelia Bohne; Frank H Quina

doi:10.1039/c6pp00060f

Cucurbit[7]uril inclusion complexation as a supramolecular strategy for color stabilization of anthocyanin model compounds

Photochem Photobiol Sci. 2016 Jun 8;15(6):752-7. doi: 10.1039/c6pp00060f. Epub 2016 Apr 28.

Authors

Barbara Held¹, Hao Tang, Palani Natarajan, Cassio Pacheco da Silva, Volnir de Oliveira Silva, Cornelia Bohne², Frank H Quina³

Affiliations

¹ Instituto de Química, Universidade de São Paulo, C.P. 26077, São Paulo 05513-970, Brasil.
² University of Victoria.
³ Universidade de São Paulo.

PMID: 27123548
DOI: 10.1039/c6pp00060f

Abstract

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.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Acid-Base Equilibrium
Anthocyanins / chemistry*
Bridged-Ring Compounds / chemistry*
Color
Imidazoles / chemistry*
Molecular Structure
Photochemical Processes
Spectrum Analysis
Thermodynamics
Water / chemistry

Substances

Anthocyanins
Bridged-Ring Compounds
Imidazoles
cucurbit(7)uril
Water