The present study has been undertaken to find out the antimicrobial activity of methanol base ink. The antimicrobial activity was screened against ecoli, pseudomonas and staphylococcus. The dilutions of inks were prepared with different concentration, tested with respect to the bacterial strains and their inhibition was calculated. The methanolic extract of the ink of CAMLIN ink especially white board marker ink and parker gel pen ink with its blue and black colour respectively were prepared and the antimicrobial activity was determined by agar well diffusion method on different bacterial strains. It is been observed that with 10% dilution of samples Pseudomonas shows the maximum degradation of ink, in 20% dilution of samples staphylococcus and pseudomonas both shows the approximate equal degradation of ink, in 30% dilution of samples Pseudomonas shows maximum degradation, in 40% dilution of samples almost all bacteria shows the equally degradation in their mean positions, and in 50% dilution of sample only staphylococcus shows the degradation. Hence, it is very important to use the inks which show null or less sensitivity towards the microbes during the preparation of any important documents.
Agar media; EColi; Pseudomonas; Staphylococcus; Inhibition Zone
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