50 m L of this solution is added to 30 m L of either aqueous or ethanolic Aloe vera extract.
It has been used in water and air purification, biomedical application, catalytic activity, household products, cosmetics [18–20], food production , and clothing [22, 23].
Due to its small size and large surface to volume ratios, Ag NPs might exhibit additional antimicrobial capabilities not exerted by ionic silver.
The antibacterial activity against a mesophilic microorganism, Kocuria varians, a Gram-positive coccus, was measured by counting bacterial colonies in agar plate for both extracts.
We found that 4% effective concentration is the lowest concentration that completely inhibited visible growth.