title: Microalgae cultivation in sugarcane vinasse: Selection, growth and biochemical characterization.
abstract: Sugarcane ethanol is produced at large scale generating wastes that could be used for microalgae biomass production in a biorefinery strategy. In this study, forty microalgae strains were screened for growth in sugarcane vinasse at different concentrations. Two microalgae strains, Micractinium sp. Embrapa|LBA32 and C. biconvexa Embrapa|LBA40, presented vigorous growth in a light-dependent manner even in undiluted vinasse under non-axenic conditions. Microalgae strains presented higher biomass productivity in vinasse-based media compared to standard Bold's Basal Medium in cultures performed using 15L airlift flat plate photobioreactors. Chemical composition analyses showed that proteins and carbohydrates comprise the major fractions of algal biomass. Glucose was the main monosaccharide detected, ranging from 46% to 76% of the total carbohydrates content according to the strain and culture media used. This research highlights the potential of using residues derived from ethanol plants to cultivate microalgae for the production of energy and bioproducts.
authors.affiliation: Embrapa Agroenergy, Brasília/DF, Brazil; Universidade Federal da Bahia, Vitória da Conquista/BA, Brazil.
authors.forename: Hugo
authors.initials: H
authors.lastname: Santana
authors.affiliation: Embrapa Agroenergy, Brasília/DF, Brazil; Universidade Federal do Tocantins, Gurupi/TO, Brazil.
authors.forename: Carolina R
authors.initials: CR
authors.lastname: Cereijo
authors.affiliation: Embrapa Agroenergy, Brasília/DF, Brazil; Universidade Federal do Tocantins, Gurupi/TO, Brazil.
authors.forename: Valérya C
authors.initials: VC
authors.lastname: Teles
authors.affiliation: Embrapa Agroenergy, Brasília/DF, Brazil; Universidade Federal do Tocantins, Gurupi/TO, Brazil.
authors.forename: Rodrigo C
authors.initials: RC
authors.lastname: Nascimento
authors.affiliation: Embrapa Agroenergy, Brasília/DF, Brazil; Universidade Federal do Tocantins, Gurupi/TO, Brazil.
authors.forename: Maiara S
authors.initials: MS
authors.lastname: Fernandes
authors.affiliation: Embrapa Agroenergy, Brasília/DF, Brazil.
authors.forename: Patrícia
authors.initials: P
authors.lastname: Brunale
authors.affiliation: Embrapa Agroenergy, Brasília/DF, Brazil.
authors.forename: Raquel C
authors.initials: RC
authors.lastname: Campanha
authors.affiliation: Embrapa Agroenergy, Brasília/DF, Brazil.
authors.forename: Itânia P
authors.initials: IP
authors.lastname: Soares
authors.affiliation: Embrapa Agroenergy, Brasília/DF, Brazil.
authors.forename: Flávia C P
authors.initials: FCP
authors.lastname: Silva
authors.affiliation: Embrapa Agroenergy, Brasília/DF, Brazil.
authors.forename: Priscila S
authors.initials: PS
authors.lastname: Sabaini
authors.affiliation: Embrapa Agroenergy, Brasília/DF, Brazil; Universidade Federal da Bahia, Vitória da Conquista/BA, Brazil; Universidade Federal do Tocantins, Gurupi/TO, Brazil.
authors.forename: Félix G
authors.initials: FG
authors.lastname: Siqueira
authors.affiliation: Embrapa Agroenergy, Brasília/DF, Brazil; Universidade Federal do Tocantins, Gurupi/TO, Brazil. Electronic address: bruno.brasil@embrapa.br.
authors.forename: Bruno S A F
authors.initials: BSAF
authors.lastname: Brasil
mesh_terms: D018533:Biomass; D002241:Carbohydrates / Q000032:analysis; D018929:Cell Culture Techniques / Q000379:methods*; D000431:Ethanol / Q000378:metabolism; D058086:Microalgae / Q000254:growth & development* / Q000378:metabolism; D058433:Photobioreactors / Q000382:microbiology; D031786:Saccharum / Q000737:chemistry*; D014866:Waste Products
chemical_list: D002241:Carbohydrates; D014866:Waste Products; D000431:Ethanol
keywords: Biorefinery; CO(2); Chlamydomonas; Micractinium; Photobioreactor; Wastewater