Description
Bacto™ Proteose Peptone No. 3 is used in preparing microbiological culture media. It is a
modification of Proteose Peptone adapted for use in the preparation of chocolate agar for
propagation of Neisseria species and chocolate tellurite agar for Corynebacterium diphtheriae.
While investigating the nutritional values of the Proteose Peptones, Difco Laboratories found
that Proteose Peptone No. 3 provides superior nutrition for fastidious microorganisms. It
supports growth of streptococci, staphylococci, pneumococci, gonococci and other
organisms that require a highly nutritious substrate. For example, Ifediba and Vanderberg report that Proteose Peptone No. 3 in addition to calf serum was used as an inexpensive
replacement for human serum in cultivation of Plasmodium falciparum, the causative agent
of human malaria. Cell culture manufacturers have found significant yield improvements in
using Proteose Peptone No. 3.