Abstract
Antibacterial activity of acidic, basic and neutral fractions of petrol, ether and chloroform extracts of 39 plant species with a total of 351 fractions is reported. Activity was observed with in 65 (~19%) of the fractions, mostly in the ether fractions (52%), followed by chloroform fractions (~35%), while petrol fractions were the least active (~15%). In sum, ~52% of the acids/phenols, ~17% basic and ~35% of the neutral fractions exhibited activity. None of the aqueous residual fractions showed significant activity.