单词	peptone
释义	peptone noun pep·​tone ˈpep-ˌtōn  : any of various water-soluble products of partial hydrolysis of proteins Example Sentences Recent Examples on the Web Once completed, the 60,000 square foot biotech plant will be used to make animal-free peptone proteins that can be used to grow bacteria and other cultures in a lab. Dee Depass, Star Tribune, 22 June 2021 Word History Etymology German Pepton, from Greek, neuter of peptos cooked First Known Use 1855, in the meaning defined above Medical Definition peptone noun pep·​tone ˈpep-ˌtōn  1 : any of various protein derivatives that are formed by the partial hydrolysis of proteins (as by enzymes of the gastric and pancreatic juices or by acids or alkalies), that are not coagulated by heat, and that are soluble in water but unlike proteoses are not precipitated from solution by saturation with ammonium sulfate 2 : a complex water-soluble product that contains peptones and other protein derivatives, is obtained by digesting protein (as meat) with an enzyme (as pepsin or trypsin), and is used chiefly in nutrient media in bacteriology
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