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Soares, Bruno M.; Vieira, Augusto A.; Lemões, Juliana S.; Santos, Clarissa M.M.; Mesko, Márcia F.; Primel, Ednei G.; Montes D’Oca, Marcelo G.; Duarte, Fábio A.
Bioresource technology, 04/2012, Volume: 110Journal Article
Display omitted ► Determination of 27 elements in the steps of the synthesis of FAMEs from microalga. ► Multielement determination by ICP-MS and ICP OES after microwave-assisted digestion. ► Residual biomass could be used for animal feed production. 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.
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