Ethyl lactate is a hydrophilic solvent produced from bio-renewable sources (bioethanol and lactic acid corn fermentation) that considered as “green” due to its extremely low toxicity, biodegradability negligible eco-toxicity. This work focuses on the utilization of ethyl form aqueous two-phase systems (ATPS) in presence inorganic salts for extraction antibiotics solutions. The performance three...

growing applications of phenylalanine dehydrogenase (phedh) enzyme in the medical and pharmaceutical industries encourages researchers to seek simple, fast and economical alternative purification methods. with goal of finding a new technique, the extraction and purification of recombinant bacillus badius phedh in polyethylene glycol 6000 (peg-6000) and ammonium sulfate aqueous two-phase systems...

Este estudio de diseño instrumental se realizó con el objetivo analizar las evidencias psicométricas la escala ATPS y elaborar datos normativos para su aplicación en estudiantes secundaria Lima Metropolitana. Participaron 429 11 a 18 años, seleccionados través un muestreo no probabilístico por conveniencia. El análisis factorial confirmatorio del modelo unidimensional 15 ítems ajustó, lo que de...

Aqueous two-phase systems (ATPS) that are formed by mixing a polymer (usually polyethylene glycol, PEG) and a salt (e.g. phosphate, sulphate or citrate) or two polymers, and water can be effectively used for the separation and purification of proteins. The partitioning between both phases is dependent on the surface properties of the proteins and on the composition of the two phase system as ha...

Monoclonal antibodies have proven their potential as therapeutic molecules with applications as diverse as diagnosis, oncology and treatment of autoimmune diseases; the need for their supply is higher than it ever was, with the global market for monoclonal antibodies being expected to grow to nearly $58 billion in 2016. The main challenge for this growth remains the fact these products need to ...

BACKGROUND AND PURPOSE Previously, implant survival of total shoulder prostheses was reported to be inferior to that of hemiprostheses. However, the use of total prostheses has increased in Norway due to reported good functional results. On this background, we wanted to study implant survival of 4 major shoulder prosthesis types in Norway between 1994 and 2012. PATIENTS AND METHODS The study ...

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 Italian workers D'Alessandro, Oddo, Comes, and Dardanoni (1949) and D'Alessandro and Dardanoni (1953) described the isolation of four serologically active components of Reiter's treponeme. These contributions represent milestones in the sero-diagnosis of syphilis since they were the initial systematic investigations into the serological components of treponemes. One of the components was co...