“…ATPS have been used mainly in biotechnology for the separation of biomolecules, such as cells, organelles, membrane fractions and proteins (Walter & Johansson, 1994;Albertsson, 1986;Rito-Palomares, 2004;Gunduz &Tolga, 2004;Roobol-Boza et al, 2004;Agasøster, 1998).This method appears to be an attractive alternative to conventional extraction methods such as liquid-liquid extraction and solid-phase extraction, to simultaneously carry out isolation, purification and enrichment of biomolecules (RitoPalomares, 2004;Gunduz & Tolga, 2004;Roobol-Boza et al, 2004). Apart from proteins like bovine serum albumin, lysozyme, trypsin, myoglobin (Pei et al, 2009, Du et al, 2007Dreyer & Kragl, 2008;Dreyer and Kragl, 2009) ATPS have been used for the recovery of small organic and inorganic molecules such as metal ions, radiochemicals, dyes, drug molecules (Huddleston et al, 1999;Willauer et al, 2002;Zhu et al, 2001;Bridges & Rogers, 2008). Short chain alcohols (Gutowski et al, 2003), phenol (Chen et al, 2009), testosterone and epitestosterone (He et al, 2005), penicillin G , opium alkaloids (Li et al, 2005a), L-tryptophan Ventura et al, 2009;Louros et al, 2010), antibiotics (Dominguez-Perez et al, 2010), caffeine and nicotine have been analysed as partitioning solutes so far.…”