Extraction and determination of morphine in compound liquorice using an aqueous two-phase system of poly(ethylene glycol)/K2HPO4 coupled with HPLC

Purification of lipase produced by a new source of Bacillus in submerged fermentation using an aqueous two-phase system

“…In this context ATPS has been extensively used to recover and purify various biocompounds such as proteins, enzymes and alkaloids [14,15]. The partitioning of proteins in the standard biphasic aqueous system depends on the concentration and molecular weight of the polymers, concentration and type of the salt, temperature and pH.…”

Electrocatalytic determination of morphine at the surface of a carbon paste electrode spiked with a hydroquinone derivative and carbon nanotubes

“…Since, MO is presented in the urine sample of patients and addicts at trace levels, a sensitive assay method is desirable. In order to improve the sensitivity of detection, high efficiency detectors such as mass spectrometry (MS) [9][10][11][12][13][14] and fluorescence [15][16][17] were applied. However, MS is an expensive technique, and fluorescence always needs critical derivatization reactions.…”

Extraction mechanism of sulfamethoxazole in water samples using aqueous two-phase systems of poly(propylene glycol) and salt

“…PEG is often used in aqueous two-phase partitioning studies [22,[25][26][27][28], and there are extensive data in literature reporting the use of this polymer. Poly(propylene glycol) 400 (PPG) is a polymer that is structurally closely related to PEG.…”