Evaluation of the Antibacterial Activity of Pleurotus spp. Cultivated on Different Agricultural Wastes in Chiro, Ethiopia

Table 6

Antibacterial activity of the methanolic extract of Pleurotus spp. cultivated on different substrates.

Bacteria used	Volume of extract per well (μL)	Zone of inhibition (mm)
		P. ostreatus				Control on NA	P. florida				Control on NA
		CS	SGR	PS	WG	Streptomycin	CS	SGR	PS	WG	Streptomycin
Pseudomonas aeruginosa	20	10.2	9.3	9.7	8.7	18.2	9.2	9.4	10.2	10.2	17
	40	12.4	10.5	10.6	9.8	20.6	10.7	10.6	12.3	11.3	20
	60	14.5	12.6	12.4	12.5	23.5	13.4	12.7	13.4	13.4	22.7
	80	15.7	14.4	13.5	14.6	24.8	14.5	13.9	14.8	13.8	24
	100	16.4	15.6	14.2	15.3	26.9	16.2	14.5	15.5	14.8	26.3

Substrate: CS = coffee straw, SGR = Sorghum grain residue, PS = pea straw, WG = wheat grain, NA = nutrient agar.