
Antiporn?
Life uhh, doesn’t find a way?
Somehow I have made the Dead Sea equivalent of agar plates. When I tell you that I intentionally contaminated this plate last week, what I mean to say is that I literally gave it a wet willy. It still looks completely unconcerned. The specs in this pic are tiny bubbles.
What have I done wrong here?
Recipe:
1000ml water
20g agar
20g lme
1g peptone
2 drops gel food coloring.
Food coloring ingredients (glycerin, sorbitol, sodium carboxymethyl cellulose, potassium sorbate, Yellow 5&6, Red 3&40, Blue 1
I did some transfers from store bought plates at the same time. The mycelium is going tomentose all over the transferred puck and not growing into my plate at all.
Edit: Okay, a bit of research and it looks like potassium sorbate from the gel food dye is antifungal… but it doesn’t sound like it is antibacterial so I still don’t get why I don’t see contamination?