What happened when my fresh lime peel (Citrus aurantiifolia) extract didn't have zone of inhibition?

I did an antibacterial activity of lime peel. I use ethyl acetate as the solvent. The ratio is 1:4. The method of extraction is maceration for 3 days. I stir it everyday. After the 3 days of...

04 July 2020 1,498 1 View