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Tryptone is the assortment of peptides formed by the digestion of casein by the protease trypsin.Tryptone is commonly used in microbiology to produce lysogeny broth for the growth of E. coli and other microorganisms. It provides a source of amino acids for the growing bacteria.ryptone is the assortment of peptides formed by the digestion of casein by the protease trypsin.
The acronym has been variously interpreted, perhaps flatteringly, but incorrectly, as Luria broth, Lennox broth, or Luria Bertani medium. For the historical record, the abbreviation LB was intended to stand for âlysogeny broth.â (5, page 598).Lysogeny broth (LB), a nutritionally rich medium, is primarily used for the growth of bacteria. It is also known as Luria broth or Luria-Bertani broth.LB medium and LB agar plate.Source: Masur, Wikipedia. LB media formulations have been an industry standard for the cultivation of Escherichia coli as far back as the 1950s. These media have been widely used in molecular microbiology applications for the preparation of plasmid DNA and recombinant proteins.B medium and LB agar plate. Source: Masur, Wikipedia. LB media formulations have been an industry standard for the cultivation of Escherichia coli as far back as the 1950s. These media have been widely used in molecular microbiology applications for the preparation of plasmid DNA and recombinant proteins.