Advanced search
Start date
Betweenand

Intermolecular interactions involving betalains

Grant number: 14/14866-2
Support type:Regular Research Grants
Duration: November 01, 2014 - October 31, 2016
Field of knowledge:Physical Sciences and Mathematics - Chemistry - Organic Chemistry
Principal Investigator:Erick Leite Bastos
Grantee:Erick Leite Bastos
Home Institution: Instituto de Química (IQ). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

Flowers are reproductive structures with impressive aesthetic appeal. However, the contrast of the patterns produced by the pigments present in petals and other plant structures can be highly complex. Besides the interaction with visible light, some plant pigments can absorb ultraviolet light or emit fluorescence in order to favor the plant-pollinator interactions. Betalains are nontoxic vacuolar pigments derived from L-tyrosine, which are present in the petals of most fluorescent flowers. Stabilization of betalains outside plant vacuole is difficult given their high chemical reactivity. However, this feature promotes the interaction of betalains and biomolecules and their accumulation in subcellular compartments, making these antioxidant pigments suitable as therapeutic agents for diseases related to oxidative stress. The goal of this interdisciplinary research project is both to understand the chemical nature and apply the effects of the intermolecular interaction between betalains and other chemical species. We propose to: i) study the interaction of solvents, ions and copigments with natural and artificial betalains ii) investigate the mechanism of the oxidation of natural betalains, and iii) expand the understanding of the interaction of betalains with biomolecules potentially involved in the internalization and accumulation of these pigments in cellula. (AU)

Articles published in Agência FAPESP Newsletter about the research grant
Pigments from fluorescent flowers can have clinical applications 

Scientific publications (6)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
PAVLIUK, MARIIA V.; FERNANDES, ARTHUR B.; ABDELLAH, MOHAMED; FERNANDES, DANIEL L. A.; MACHADO, CAROLINE O.; ROCHA, IGOR; HATTORI, YOCEFU; PAUN, CRISTINA; BASTOS, ERICK L.; SA, JACINTO. Nano-hybrid plasmonic photocatalyst for hydrogen production at 20% efficiency. SCIENTIFIC REPORTS, v. 7, AUG 17 2017. Web of Science Citations: 3.
KASKOVA, ZINAIDA M.; DORR, FELIPE A.; PETUSHKOV, VALENTIN N.; PURTOV, KONSTANTIN V.; TSARKOVA, ALEKSANDRA S.; RODIONOVA, NATALJA S.; MINEEV, KONSTANTIN S.; GUGLYA, ELENA B.; KOTLOBAY, ALEXEY; BALEEVA, NADEZHDA S.; BARANOV, MIKHAIL S.; ARSENIEV, ALEXANDER S.; GITELSON, JOSEF I.; LUKYANOV, SERGEY; SUZUKI, YOSHIKI; KANIE, SHUSEI; PINTO, ERNANI; DI MASCIO, PAOLO; WALDENMAIER, HANS E.; PEREIRA, TATIANA A.; CARVALHO, RODRIGO P.; OLIVEIRA, ANDERSON G.; OBA, YUICHI; BASTOS, ERICK L.; STEVANI, CASSIUS V.; YAMPOLSKY, ILIA V. Mechanism and color modulation of fungal bioluminescence. SCIENCE ADVANCES, v. 3, n. 4 APR 2017. Web of Science Citations: 20.
AUGUSTO, FELIPE A.; FRANCES-MONERRIS, ANTONIO; GALVAN, IGNACIO FDEZ; ROCA-SANJUAN, DANIEL; BASTOS, ERICK L.; BAADER, WILHELM J.; LINDH, ROLAND. Mechanism of activated chemiluminescence of cyclic peroxides: 1,2-dioxetanes and 1,2-dioxetanones. Physical Chemistry Chemical Physics, v. 19, n. 5, p. 3955-3962, FEB 7 2017. Web of Science Citations: 12.
VASCONCELOS, STANLEY N. S.; BELTRAN RODRIGUES, ANA CLARA; BASTOS, ERICK LEITE; STEFANI, HELIO A. Synthesis of a Tyr-Tyr Peptide Library and Fluorescence of the Stilbenyl Derivatives. CHEMISTRYSELECT, v. 1, n. 6, p. 1287-1291, MAY 1 2016. Web of Science Citations: 3.
FERNANDES, DANIEL L. A.; PAUN, CRISTINA; PAVLIUK, MARIIA V.; FERNANDES, ARTHUR B.; BASTOS, ERICK L.; SA, JACINTO. Green microfluidic synthesis of monodisperse silver nanoparticles via genetic algorithm optimization. RSC ADVANCES, v. 6, n. 98, p. 95693-95697, 2016. Web of Science Citations: 8.
BARTOLONI, FERNANDO HEERING; DE OLIVEIRA, MARCELO ALMEIDA; MONTEIRO LEITE CISCATO, LUIZ FRANCISCO; AUGUSTO, FELIPE ALBERTO; BASTOS, ERICK LEITE; BAADER, WILHELM JOSEF. Chemiluminescence Efficiency of Catalyzed 1,2-Dioxetanone Decomposition Determined by Steric Effects. Journal of Organic Chemistry, v. 80, n. 8, p. 3745-3751, APR 17 2015. Web of Science Citations: 19.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.