a novel, simple and more sensitive spectrophotometric procedure has been developed for the determination of brilliant blue fcf and carmoisine in food samples by an aqueous two-phase system (atps). after extraction, the absorbance values were measured at 527 and 632 nm for carmoisine and brilliant blue fcf, respectively. the effects of different parameters such as, polyethylene glycol (type and ...

The extraction of xylanase was performed using an aqueous two-phase system (ATPS) based on polyethylene glycol (PEG1540) and various salts. Preliminary studies in a batch extractor showed that the highest efficiency, E = 79.63 ± 5.21%, purification factor, PF 1.26 0.25, were obtained with sodium citrate dihydrate-H2O-PEG1540-based ATPS for time 10 min. process optimized experimental Box-Behnken...

The extraction of lutein from marigold petals using a surfactant-based aqueous two-phase system is reported. In this work, the effectiveness hydrophilic-lipophilic balance surfactants on performance for petal powder was demonstrated solutions wide range non-ionic surfactants. response surface methodology applied to obtain optimised conditions maximum lutein. At (Temperature = 37.5 °C, S/L 0.003...

A study on the extraction of Acetaminophen (ACTP) which is also known as paracetamol, from aqueous solution by emulsion liquid membrane process using Taylor-Couette Column (TCC) was investigated. An ELM consists of three phase system which are the external, membrane and internal phases. The external phase containing the ACTP aqueous solution to be treated. Basically, the internal and membrane p...

A set of new polymers that can be used as phase forming components in aqueous two-phase systems is presented. All polymers studied have thermoseparating properties i.e. form one separate polymer enriched phase and one aqueous solution when heated above the critical temperature. This property makes the polymers attractive alternatives to the polymers used in traditional aqueous two-phase systems...