Student Post-Experimental Advice

Peter M. Muriana muriana at
Tue Feb 8 11:27:19 EST 1994

In article <CKvw3J.95G at>, horton at (Robert Horton) writes:
>books at wrote:
>: My sons fourth grade science project is to test which sandwich spread will
>: grow bacteria the best and we need some scientific advice.
>: We then sampled each spread by plated on LB agar plates. Only peanut
>: butter(air)
>: and peanut butter(bag) developed bacterial colonies.
>This is surprising; bacteria seldom grow in peanut butter. I understand this
>is because there are typically a lot of fungi in the stuff, so it's 
>full of antibiotics. How long did your bugs take to grow?
      - human consumption??? 
>Bob Horton

Low water activity, similar to honey, pancake syrup, etc.

Regards, Peter Muriana

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