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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Photophysics and hydrolytic stability of betalains in aqueous trifluoroethanol

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Author(s):
Bartoloni, Fernando H. [1] ; Goncalves, Leticia Christina P. [1] ; Rodrigues, Ana Clara B. [1] ; Doerr, Felipe Augusto [2] ; Pinto, Ernani [2] ; Bastos, Erick L. [3]
Total Authors: 6
Affiliation:
[1] Univ Fed ABC, Ctr Ciencias Nat & Humanas, BR-09210580 Sao Paulo - Brazil
[2] Univ Sao Paulo, Fac Ciencias Farmaceut, Dept Anal Clin & Toxicol, BR-05508900 Sao Paulo - Brazil
[3] Univ Sao Paulo, Inst Quim, Dept Quim Fundamental, BR-05508000 Sao Paulo - Brazil
Total Affiliations: 3
Document type: Journal article
Source: MONATSHEFTE FUR CHEMIE; v. 144, n. 4, p. 567-571, APR 2013.
Web of Science Citations: 15
Abstract

Betalains are natural antioxidant pigments responsible for the visible fluorescence of flowers. Although these compounds are almost exclusively soluble in water, they are very sensitive to both hydrolysis and water-catalyzed isomerization. We show that three representative betalains are soluble in 2,2,2-trifluoroethanol (TFE) and that the hydrolytic stability of these model compounds in hydroalcoholic solutions increases with increasing amount of TFE. Furthermore, TFE increases the fluorescence quantum yields of betaxanthins. . (AU)

FAPESP's process: 07/59407-1 - Semi-synthetic betalains as biocompatible antioxidants and pigments
Grantee:Leticia Christina Pires Gonçalves
Support type: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 10/15042-2 - Infection by Giardia lamblia: search for molecules involved in parasita-host interaction
Grantee:Renata Rosito Tonelli
Support type: Research Grants - Young Investigators Grants
FAPESP's process: 10/16082-8 - Semisynthesis of functional betalains
Grantee:Fernando Heering Bartoloni
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 07/00684-6 - Synthesis and application of modified flower pigments
Grantee:Erick Leite Bastos
Support type: Research Grants - Young Investigators Grants
FAPESP's process: 11/23036-5 - Floral betalamic pigments: fluorescence and antiradical capacity
Grantee:Erick Leite Bastos
Support type: Regular Research Grants