Table 1.

Zones of stunted growth (mm) for S. aureus 124 and P. aeruginosa 18 after application of a cell homogenate of two strains of microalgae: sensitive (D.v-Cu.S) and resistant (D.v-Cu.R) to copper ions, to paper disks and wells. The means of 3 experiments and their standard errors are presented.

Test Method	Test sample	Bacterial strain
		S. aureus 124	P. aeruginosa 18
Disk diffusion test	D.v.-CuS	11,7 ± 0,42	11,5 ± 0,50
	D.v.-CuR	12,2 ± 0,60	12,0 ± 0,63
Agar well diffusion method	D.v.-CuS	14,0 ± 0,41	14,5 ± 1,19
	D.v.-CuR	13,0 ± 0,41	14,8 ± 0,75