How long does Erythromycin last in an agar plate - (Jan/29/2010 )

I am supplementing my agar plates with erythromycin and I left my yeast growing overnight on them. The next day, as I had hoped, I found no growth. But by the evening there did appear to be a small amount of growth. I wondered if the erythromycin had degraded after 16 hours like ampicillin does and the yeast could grow again?

Thanks,

Cat.

cat1082 on Jan 29 2010, 05:53 PM said:

That's perfect, thanks very much!

Thanks klinmed, that is a nice and useful paper. However, it describes the stability of antibiotics in agar stored at 4C, rather than typical growth incubator temperatures of 30-36C.