Biology Stack Exchange is a question and answer site for biology researchers, academics, and students. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Standard recipes for yeast medium often include "bacto-peptone". Is this the same as bacteriological peptone? Is there an authoritative source that spells it out?

share|improve this question
up vote 3 down vote accepted

See here. Bacto is a brand which used to be marketed by Difco. It is a casein (milk protein) hydrolysate.

share|improve this answer
Thanks Alan, I've retracted my answer – user560 May 26 '14 at 22:02
@leonardo that's a pity since it included a lot of useful information. – Alan Boyd May 27 '14 at 6:40

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.