At first sight, we can note (Fig. 6) that un-dyed wool tissue
(white) did not present any activity since it does not show an aureole all around which prove that dyeing enhances the antibacterial activity of the fabric when the natural extracted dyes are applied to it.
A similar result was found with five natural dyes obtained from green tea, madder, turmeric, saffron petals and henna on wool fabric (Ghaheh et al., 2014)