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

Table 11

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 NA	P. florida				Control on NA
		CS	SGR	PS	WG	Streptomycin	CS	SGR	PS	WG	Streptomycin
B. subtilis	20	6.7	7.0	6.6	6.3	18.3	7.7	7.5	7.2	6.9	17
	40	8.1	8.6	7.2	8.2	19.7	9.1	8.5	8.4	8.5	21.7
	60	9.0	9.5	9.6	9.5	20.2	9.4	11.4	10.3	11.5	23.4
	80	11.5	11.3	12.3	10.7	22.3	11.5	13.2	12.5	12.7	25.0
	100	12.6	13.5	13.7	12.3	25.8	13.8	14.7	13.8	13.6	27.2

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