Antibacterial activity of methanol and ethyl acetate extracts of two Phellinus species were studied. The
activity was evaluated by well assay method and microtiter plate dilution method using sixteen strains
of Acinetobacter baumannii Bouvet and Grimont. The ethyl acetate extract of Phellinus swieteniae
(Murr.) Herrera and Bondart showed activity against all strains of Acinetobacter. The minimum
inhibitory concentration of ethyl acetate extract of Phellinus merrillii (Murr.) Ryv. was found to be in the
range 0.71 - 1.42 mg/ml. The MIC value of methanol extract of both species was found to be much
higher.