Antibacterial activities
2.2.7.1. Test organisms. For the purpose of antimicrobial evaluation,
two American type culture collection pathogenic bacteria
were employed, P. aeruginosa ATCC 27853 (gram negative bacteria)
and S. aureus ATCC 25923 (gram positive bacteria). These microorganisms
were cultured in nutrient broth.
2.2.7.2. Agar diffusion method. Sterile 8mmfilter paper disks were
placed on the plates and impregnated with 30L of sample extract.
After allowing 1 h at room temperature for the extracts to facilitate
diffusion across the surface, the plates were incubated at 37 ◦C for
24 h for the bacteria.
The antimicrobial activity was measured as the size of the clear
zone of growth inhibition (Boo et al., 2012).
The antimicrobial efficacy of a compound will vary when it is
present in solution and when it is held intimately by a textile substrate.
The antimicrobial activity of dyed wool s