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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.
It is a member of group 18 (noble gases) elements. A colorless, odorless, tasteless noble gas, krypton occurs in trace amounts in the atmosphere, is isolated by fractionally distilling liquefied air, and is often used with other rare gases in fluorescent lamps.Krypton is inert for most practical purposes.rypton gas is also combined with other gases to make luminous signs that glow with a bright greenish-yellow light. Krypton mixes with argon as the fill gas of energy saving fluorescent lamps. This reduces their power consumption. Unfortunately this also reduces their light output and raises their cost.