at a temperature not exceeding the boiling point of the solvent.
The extracts were filtered using Whatman filter paper (No.1) while hot, concentrated in vacuum under reduced pressure using rotary flask evaporator, and dried in a desiccator.
The hydroalcoholic extract yields a dark greenish solid residue weighing 5.750 g (23.0% w/w).
More yields of extracts were collected by this method of extractions.
The extracts were then kept in sterile bottles, under refrigerated conditions, until further use.
The dry weight of the plant extracts was obtained by the solvent evaporation and used to determine concentration in mg/ml. The extract was preserved at 2- to 4oC. This crude extracts of hydroalcohol was used for further investigation for potential of antimicrobial properties.