Biofilm-Inhibitory Activity of Wild Mushroom Extracts against Pathogenic Bacteria

Table 3

Effect of A. auricula-judae extracts on the growth of planktonic bacterial cells.

Test bacteria	Optical density of the test and the negative control bacteria at 620 nm
	Chloroform	NC	70% ethanol	NC	Hot water	NC
P. aeruginosa	0.20 ± 0.01	0.20 ± 0.01	0.10 ± 0.02	0.10 ± 0.01	0.20 ± 0.02	0.20 ± 0.02
E. coli	0.10 ± 0.02	0.20 ± 0.01	0.20 ± 0.02	0.20 ± 0.01	0.10 ± 0.01	0.10 ± 0.02
S. aureus	0.20 ± 0.01	0.20 ± 0.02	0.20 ± 0.01	0.20 ± 0.02	0.10 ± 0.02	0.10 ± 0.01

NC: negative control; all extracts were tested at 62.5 μg/mL. The significance of the bold values is to indicate that the chloroform extract has shown promising results beyond the negative control.