Thermosensitive Micellar Systems using Ionic Liquids as Co-Surfactants for Extractive Platforms

FILIPA A. VICENTE; LUCIANA PELLEGRINI MALPIEDI; FRANCISCA A. E SILVA; ADALBERTO PESSOA JR; JOÃO A.P. COUTINHO; SÓNIA P.M. VENTURA

Salamanca

Congreso; BIOIberoamérica 2016; 2016

Sociedad Española de Biotecnología

Since they are mostly composed of water, aqueous micellar two-phase systems (AMTPS) using common surfactants, are emerging as an advantageous liquid-liquid extraction (LLE) systems. AMTPS composed of two surfactants enhanced their extraction, hence exploiting this advantage by introducing ionic liquids (ILs) as a new class of co-surfactants came as an attractive alternative. Thus, this work aims the development of a new technology towards the extraction field.Herein, imidazolium and phosphonium-based ILs were applied in the design of new AMTPS, based on Triton X-114 as the main surfactant. To evaluate their potential, the partition of cytochrome c (Cyt c) and Rhodamine 6G (R6G) was analyzed, considering the effect of the ILs as co-surfactants in the coexistence curves and their impact upon the solutes partition. The obtained results clearly demonstrate that ILs have major effects on the Tcloud. The presence of ILs as co-surfactants was demonstrating the increased capacity of these new AMTPS to enhance the partition coefficient of cytochrome c KCyt c (indicated as log KCyt c) from -0.587 ± 0.117 up to -1.510 ± 0.139, but also to improve the selectivity SR6G/Cyt c from 925.25 up to 3418.891.