title: Diel oscillation in the optical activity of carotenoids in the absorption spectrum of Nannochloropsis.
abstract: In this paper we show that the absorption spectrum of the microalgae Nannochloropsis oceanica exhibits changes in response to the modulation of incident light. A model was used to analyze the contribution of different active pigments to the total absorption in the photosynthetically active radiation region and suggested consistent diel oscillations in the optical activity of carotenoids.
authors.affiliation: Instituto de Física, Universidade de Brasília, 70910-900, Brasília, Brazil.|Faculdade Gama, Universidade de Brasília, 72444-240, Gama, Brazil.
authors.forename: Gabriela C
authors.initials: GC
authors.lastname: Possa
authors.affiliation: Embrapa Agroenergia, 70770-901, Brasília, Brazil.
authors.forename: Hugo
authors.initials: H
authors.lastname: Santana
authors.affiliation: Embrapa Agroenergia, 70770-901, Brasília, Brazil.
authors.forename: Bruno S A F
authors.initials: BS
authors.lastname: Brasil
authors.affiliation: Instituto de Física, Universidade de Brasília, 70910-900, Brasília, Brazil. roncaratti@fis.unb.br.
authors.forename: Luiz F
authors.initials: LF
authors.lastname: Roncaratti
keywords: Absorption spectrum; Carotenoids; Diel oscillations; Nannochloropsis