Table 3.

Screening of antibacterial activity of selected timber-yielding plant by the agar-well diffusion method.

Bacteria	Zone of inhibition by plant (numbers 1–21) extracts (mm)
	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21
Enterococcus faecalis	20	12	28	26	19	23	26	29	19	25	23	22	19	22	18	22	26	25	20	27	24
Staphylococcus aureus	19	11	29	26	21	26	27	27	23	26	24	24	23	21	20	18	25	26	21	25	26
Acinetobacter baumannii	12	11	23	24	22	26	26	26	18	26	23	19	19	19	12	22	25	19	16	24	26
Citrobacter freundii	—	13	26	24	22	27	23	27	17	25	21	19	12	13	12	19	21	21	17	22	24
Enterobacter aerogenes	13	—	27	25	19	26	28	29	19	28	26	—	—	19	18	19	22	24	—	22	19
Escherichia coli	—	—	22	19	—	17	21	24	19	21	22	19	—	19	—	19	26	28	12	21	23
Klebsiella pneumoniae	12	12	25	20	21	18	22	26	—	—	26	20	—	16	—	13	27	26	18	19	22
Proteus mirabilis	11	12	25	24	—	—	21	28	22	23	27	—	18	16	19	—	24	23	19	21	20
Pseudomonas aeruginosa	13	11	28	22	23	19	25	29	21	26	23	15	15	20	19	17	26	26	25	20	25

Numbers 1–21 are serial numbers of plants given in Table 1; values are measurements of zone of inhibition due to methanol extracts. The “—” sign denotes no activity.