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

Table 3

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

Bacteria used	Volume of extract per well (μL)	Zone of inhibition (mm)
		P. ostreatus				Control on PDA	P. florida				Control on NA
		CS	SGR	PS	WG	Streptomycin	CS	SGR	PS	WG	Streptomycin
E. coli	20	12.9	9.4	8.3	7.6	24.3	7.2	9.1	9.3	8.7	23.7
	40	13.6	11.6	9.1	8.5	25.8	8.3	11.5	10.8	11.4	25.3
	60	14.2	12.3	10.5	10.5	27.8	10.6	12.1	12.4	12.5	27.5
	80	15.2	14.7	11.4	10.8	28.1	13.4	14.5	14.6	14.7	28.8
	100	16	15.6	12.0	11.7	29.6	16.4	17.1	17.4	16.6	29.9

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