title: Investigation of major and trace element distribution in the extraction-transesterification process of fatty acid methyl esters from microalgae Chlorella sp.
abstract: This work reports, for the first time, the determination of major and trace elements (Al, As, Ba, Ca, Cd, Co, Cr, Cu, Fe, K, La, Mg, Mn, Mo, Na, Ni, P, Pb, S, Se, Sn, Sr, Ti, Tl, U, V, and Zn) in the fractions of the synthesis of fatty acid methyl esters (FAMEs). These include fresh microalgae, residual biomass, lipid fraction, crude FAMEs, insoluble fraction and purified FAMEs from microalgae Chlorella sp. A microwave-assisted digestion procedure in closed vessels was applied for sample digestion and subsequent element determination by inductively coupled plasma-based techniques. The proposed method was suitable for the multielement determination in FAMEs and its fractions obtained from microalgae. The element concentration was compared with results found in the literature and a careful discussion about the use of residual biomass for different applications was performed.
authors.affiliation: Escola de Química e Alimentos, Universidade Federal do Rio Grande, 96203-900 Rio Grande, RS, Brazil.
authors.forename: Bruno M
authors.initials: BM
authors.lastname: Soares
authors.forename: Augusto A
authors.initials: AA
authors.lastname: Vieira
authors.forename: Juliana S
authors.initials: JS
authors.lastname: Lemões
authors.forename: Clarissa M M
authors.initials: CM
authors.lastname: Santos
authors.forename: Márcia F
authors.initials: MF
authors.lastname: Mesko
authors.forename: Ednei G
authors.initials: EG
authors.lastname: Primel
authors.forename: Marcelo G
authors.initials: MG
authors.lastname: Montes D'Oca
authors.forename: Fábio A
authors.initials: FA
authors.lastname: Duarte
mesh_terms: D002708:Chlorella / Q000378:metabolism*; D004951:Esterification; D005227:Fatty Acids / Q000378:metabolism*; D014131:Trace Elements / Q000378:metabolism*
chemical_list: D005227:Fatty Acids; D014131:Trace Elements