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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Imidazolium-based ionic liquids as co-surfactants in aqueous micellar two-phase systems composed of nonionic surfactants and their aptitude for recovery of natural colorants from fermented broth

Texto completo
Autor(es):
Esteves Torres, Fabio Aurelio [1] ; de Almeida Francisco, Ana Clara [1] ; Brandao Pereira, Jorge Fernando [1] ; Santos-Ebinuma, Valeria de Carvalho [1]
Número total de Autores: 4
Afiliação do(s) autor(es):
[1] Univ Estadual Paulista UNESP, Sch Pharmaceut Sci, Dept Bioproc & Biotechnol, Campus Araraquara, Araraquara, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: Separation and Purification Technology; v. 196, n. SI, p. 262-269, MAY 8 2018.
Citações Web of Science: 1
Resumo

Over the last few years, synthetic Colorants have been increasingly replaced by natural-alternatives that cause fewer adverse health effects and can show biological activity. These biocompounds Can be produced by fermentative menthtive processes using microorganisms such as bacteria and filamentous funii. However;the biocompounds Sr must be extracted froint.he fermented broth before industrial application.,Thus, the development of, effective techniques for the extraction and purification of biocolorants with high recovery is of great interest' The main goal of this study was to evaluate the recovery of natural colorants produced by Talaromyces amestolkiae using aqueous micellar two-phase system (AMTPS) composed of Triton X-114 and Ionic Liquids (ILs) from the imidazolium family as co-surfactants. Preliminary experiments were performed to determine the binodal curves in both presence and absence of fermented broth containing the red colorants. Subsequently, a set of partitioning experiments was performed using the developed systems. Under all conditions, the red colorants were partitioned mainly into the micelle-rich phase. The systems with low concentrations of Triton X-114 and ILs showed high partition coefficients. The system (0.1 wt% {[}C(10)mim] Cl + 3 wt% Triton X-114) with the highest partition coefficient (K-RC = 6.12) was used to study the effect of temperature on partitioning. The partitioning of the red colorants was strongly influenced by the temperature, and K-RC increased to 24.71 at 45 degrees C. The results of this study demonstrate that the partitioning of biomolecules can be controlled by the presence of ILs, mainly by electrostatic interactions, or by the proper adjustment of the partitioning temperature. (AU)

Processo FAPESP: 16/01076-9 - Purificação de colorantes naturais obtidos por cultivo submerso de fungos filamentosos empregando extração líquido-líquido com solventes orgânicos
Beneficiário:Ana Clara de Almeida Francisco
Linha de fomento: Bolsas no Brasil - Iniciação Científica
Processo FAPESP: 14/01580-3 - Processo biotecnológico visando o desenvolvimento de novos colorantes naturais microbianos para aplicação industrial
Beneficiário:Valéria de Carvalho Santos Ebinuma
Linha de fomento: Auxílio à Pesquisa - Apoio a Jovens Pesquisadores
Processo FAPESP: 15/04751-6 - Extração e identificação química de colorantes naturais produzidos por Penicillium purpurogenum DPUA 1275
Beneficiário:Fábio Aurélio Esteves Torres
Linha de fomento: Bolsas no Brasil - Doutorado