extracted protein fractions were determined by using SDS-PAGE gels, considering the relationship between the logarithmof protein molecular weight and electrophoretic mobility,using as analytical standard “Protein Plus Protein Standards”(Bio-Rad, Richmond, CA, USA). Dilutions at three differentbuffers have been prepared in order to maintain a con-stant pH. Phosphoric acid has been used to maintain thesolution at pH 3. In the same way, monosodium phosphateand ethanolamine were used in order to stabilize pH 7and 10, respectively. All buffer solutions were carried out ata concentration of 10 mM, and the ionic strength of eachsolution was adjusted at 154 mM by adding NaCl. Finally,2-Mercaptoethanol was added to minimize chemical interac-tions among different protein fractions.