Hi friends,

The picture attached is my bacteria sample after layering it with indicator bacteria (L. plantarum) and incubating it for 24 hours.

What are the next steps I should do after layering indicator bacteria to my sample? Should I confirm the selected colonies by layering it with several indicators first (like E. coli, L. monocytogens, etc) or should I just continue to extract the supernatant, have it neutralized by adding NaOH and test the if there’s any Bacteriocin by using agar well diffusion? Thank you 🙏🙂

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