Natural betalains supported on γ-alumina: A wide family of stable pigments

Erik Pérez-Ramírez, Enrique Lima, Ariel Guzmán

Research output: Contribution to journalArticleResearchpeer-review

8 Citations (Scopus)

Abstract

© 2015 Elsevier Ltd. All rights reserved. Natural betalain chromophores, extracted from bougainvillea flowers, were stabilised on different surfaces of γ-alumina matrices. This strategy was used to produce a family of hybrid pigments including one yellow and several purple hues. Both textural and structural parameters of γ-alumina were identified as important factors to stabilise the chromophores. Particularly, a high amount of coordinative unsaturated sites of aluminium, high surface specific areas and pore diameters as high as 15 nm are suitable to stabilise the purple chromophores.
Original languageAmerican English
Pages (from-to)161-168
Number of pages144
JournalDyes and Pigments
DOIs
StatePublished - 1 Sep 2015

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Betalains
Aluminum Oxide
Chromophores
Pigments
Alumina
Aluminum
Specific surface area

Cite this

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Natural betalains supported on γ-alumina: A wide family of stable pigments. / Pérez-Ramírez, Erik; Lima, Enrique; Guzmán, Ariel.

In: Dyes and Pigments, 01.09.2015, p. 161-168.

Research output: Contribution to journalArticleResearchpeer-review

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AB - © 2015 Elsevier Ltd. All rights reserved. Natural betalain chromophores, extracted from bougainvillea flowers, were stabilised on different surfaces of γ-alumina matrices. This strategy was used to produce a family of hybrid pigments including one yellow and several purple hues. Both textural and structural parameters of γ-alumina were identified as important factors to stabilise the chromophores. Particularly, a high amount of coordinative unsaturated sites of aluminium, high surface specific areas and pore diameters as high as 15 nm are suitable to stabilise the purple chromophores.

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