background: alkyl hydroperoxide reductase (ahpc) of helicobacter pylori is considered as a diagnostic antigen. there­fore, this antigen can be used to detect h. pylori infection by stool immunoassays such as elisa. the aim of this study was to simplify the ahpc protein purification procedures. methods: for whole cell protein extraction, the bacterial cells were ruptured by octly-β-d glucopyrano...

odium dodecyl sulfate polyacrylamide gel electrophoresis (SDSPAGE) is the most widely used analytical method to resolve separate components of a protein mixture. It is almost obligatory to assess the purity of a protein through an electrophoretic method. SDS-PAGE simultaneously exploits differences in molecular size to resolve proteins differing by as little as 1% in their electrophoretic mobil...

Aminoacylase (EC 3.5.1.14) from Aspergillus oryzae was purified from a commercially available crude material by heat treatment, precipitation by polyethyleneimine and ammoniumsulfate, gel chromatography and preparative disc-gel-electrophoresis. The purified product was homogenous as judged by polyacrylamide gel electrophoresis. SDS-gel electrophoresis, polyacrylamide-gel-gradient electrohoresis...

Abstract The aim of this study was to define the simplest and least expensive protocol for total protein extraction three different macroalgae genus Caulerpa (the invasive C. taxifolia cylindracea autochthonous prolifera ). Five multi-step procedures, set up other macroalgal species, were tested. For each them, pre-treatment conditions simultaneously examined, according a factorial design, cons...

Analytical isoelectric focusing (IEF) has been applied to the study of the apolipoprotein components of rat serum high density and very low density lipoproteins. The apolipoproteins were separated on 7.5% polyacrylamide gels containing 6.8% urea, with a pH gradient of 4-6. The middle molecular weight range apolipoproteins were identified on IEF gels by the use of apolipoproteins purified by ele...

Background and Objectives: Making stacking gels for polyacrylamide gels in the laboratory by conventional methods is laborious and time consuming. Considering the role of temperature in polyacrylamide gels with respect to electrical resistance and viscosity, we assumed that decreasing the temperature would cause an increase in electrical resistance and viscosity.  Ultimately, a downward tempera...

Chlorella vulgaris has been recognized as an interesting alternative feeding source since it contains a good amount of high-quality protein. However, the presence recalcitrant cell wall strongly affects nutrients’ digestibility, bioaccessibility, and bioavailability. The present study aimed to determine influence different pre-treatments (bead milling, extrusion, freeze-drying, heating, microwa...