4 documents found, page 1 of 1
FORMULATION AND CHARACTERIZATION OF ULTRASOUND-ASSISTED NANOEMULSIONS CONTAININ...
Prá,Valéria Dal; Pires,Fernanda B.; Dolwitsch,Carolina B.; Lazzaretti Jr.,Ayres P.; Roggia,Isabel; Mortari,Sérgio R.; Freire,Denise M. G.; Souza,HomeroAbstract This study aimed to optimize ultrasound-assisted palm oil-in-water nanoemulsions. The influence of hydrophilic-lipophilic balance (HLB), oil and surfactants concentrations, ultrasound intensity and processing time were investigated by means of two experimental designs. Desirability profiles were applied to detect the optimal conditions for preparing the nanoemulsion. Stable nanoemulsions with small dro...
Qualitative and quantitative analysis of the phenolic content of Connarus var. ...
Pires,Fernanda B.; Dolwitsch,Carolina B.; Dal Prá,Valéria; Faccin,Henrique; Monego,Débora Luana; Carvalho,Leandro M. de; Viana,Carine; Lameira,OsmarABSTRACT The phenolic content of the medicinal species Connarus perrottetti var. angustifolius Radlk., Connaraceae, Cecropia obtuse Trécul, Cecropia palmata Willd., Urticaceae; and Mansoa alliacea (Lam.) A.H.Gentry, Bignoniaceae, collected in three different years was evaluated. Plant infusions and hydroalcoholic, butanol and ethyl acetate extracts were analyzed by high-performance liquid chromatography with di...
Determination of metallic contaminants in human recombinant erythropoietin (EPO...
Carvalho,Leandro M. de; Garmatz,Júlia C.; Spengler,Cristiane; Nascimento,Paulo C. do; Bohrer,Denise; Canabarro,Cibele M.; Garcia,Solange C.The contamination of renal failure patients by metals can be associated to the presence of toxic metals in the medication, since they can be absorbed by the organism. Among the possible contaminants, there are nephrotoxic metals such as aluminum, chromium and nickel. In the present work, the presence of Al, Cr and Ni as contaminants in erythropoietin formulations (EPO) was investigated by optimizing the adsorpt...
Determinação voltamétrica de metais em águas e fluidos biológicos empregando mi...
Carvalho,Leandro M. de; Spengler,Cristiane; Garmatz,Júlia C.; Nascimento,Paulo C. do; Bohrer,Denise; Del-Fabro,Luciana; Radis,GuilhermeThis work describes the optimization of pretreatment steps for the destruction of organic matter in samples of waters and biological fluids, by using an UV irradiation system with a high power UV radiation source (400 W). The efficiency of the system constructed for the photo-decomposition of samples of model waters, natural waters and biological fluids was investigated by performing recovery experiments of the...