β-carotene and oleic acid contributions to the optical properties of amazonic oils

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dc.creatorPaloma Lays dos Santos
dc.creatorMarina Frauendorf Branco Cenni
dc.creatorBarbara Brenda de Almeida Costa
dc.creatorLuiz Alberto Cury
dc.date.accessioned2025-02-24T17:59:00Z
dc.date.accessioned2025-09-08T22:52:14Z
dc.date.available2025-02-24T17:59:00Z
dc.date.issued2017
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.description.sponsorshipINCT – Instituto nacional de ciência e tecnologia (Antigo Instituto do Milênio)
dc.identifier.doihttps://doi.org/10.1016/j.jphotochem.2017.07.021
dc.identifier.issn1010-6030
dc.identifier.urihttps://hdl.handle.net/1843/80354
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of Photochemistry and Photobiology A: Chemistry
dc.rightsAcesso Restrito
dc.subjectAçaí
dc.subjectBuriti
dc.subjectPropriedades ópticas
dc.subject.otherAçaí
dc.subject.otherAndiroba
dc.subject.otherBuriti
dc.subject.otherCopaíba
dc.subject.otherβ-Carotene
dc.subject.otherOptical properties
dc.titleβ-carotene and oleic acid contributions to the optical properties of amazonic oils
dc.typeArtigo de periódico
local.citation.epage97
local.citation.spage93
local.citation.volume347
local.description.resumoThe optical properties of Amazon oils of açaí, andiroba, buriti and copaíba, which are abundant natural oils found in Amazon region, were studied via steady state and time resolved spectroscopy on diluted solutions. Their absorption and emission spectra were observed to be mainly formed by proportional contributions of oleic acid and β-carotene compounds. Time decay measurements corroborate this statement. The low quantum emission efficiency of these oils is discussed taking into account the antioxidant properties of both oleic acid and β-carotene. Moreover, the enhancement of the steady-state phosphorescence emission of β-carotene molecules was observed in a solid-state film with decreasing temperature.
local.identifier.orcidhttps://orcid.org/0000-0002-6975-9600
local.identifier.orcidhttps://orcid.org/0000-0002-2421-4922
local.identifier.orcidhttps://orcid.org/0000-0002-0763-4431
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S1010603017303982

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