Jump to content

- - - - -

Food colored agar color change, does that mean bacteria?

  • Please log in to reply
1 reply to this topic

#1 Jrotten


    Bedazzled and Bewildered

  • Gold VIP
  • 744 posts

Posted 16 July 2020 - 09:11 PM

I read somewhere once that if you ad food coloring to your agar and it changes color when viewed from the back that means you have bacteria.  I see it a lot with plates that seem otherwise perfect, especially if the donor agar was a different color than the receiving agar.  It puts a constant shadow of doubt in my head and I'd really like to know if there is really any veracity to thi.

#2 p2p



  • Free Member
  • 100 posts

Posted 16 July 2020 - 10:08 PM

The color can change as mycelium is eating the nutrients, but usually, the color would just get lighter, not change to a different color.

  • FunG likes this

Like Mycotopia? Become a member today!