title: Nitrogen-gas bubbling during the cultivation of Clostridium tetani produces a higher yield of tetanus toxin for the preparation of its toxoid.
abstract: We investigated the effect of exposing cultures of Clostridium tetani to nitrogen (N2) gas on the recovery of tetanus toxin to be processed for the preparation of its toxoid. N2 was bubbled through nine 10-liter cultures during the growth of the bacteria, while nine parallel control incubations were maintained without bubbling. We found that treatment of the C. tetani anaerobes with an inert gas in this manner during cultivation produced a highly significant increase in the yield of tetanus toxin from them in comparison with the standard procedure.
authors.affiliation: Cátedra de Microbiología y Parasitología, Facultad de Ciencias Médicas, Universidad Nacional de la Plata (UNLP), República Argentina.
authors.forename: M M
authors.initials: MM
authors.lastname: De Luca
authors.forename: H D
authors.initials: HD
authors.lastname: Abeiro
authors.forename: J A
authors.initials: JA
authors.lastname: Bernagozzi
authors.forename: J A
authors.initials: JA
authors.lastname: Basualdo
mesh_terms: D019149:Bioreactors; D003017:Clostridium tetani / Q000254:growth & development* / Q000378:metabolism*; D005285:Fermentation; D009584:Nitrogen / Q000378:metabolism*; D013744:Tetanus Toxin / Q000096:biosynthesis* / Q000302:isolation & purification*; D013745:Tetanus Toxoid / Q000096:biosynthesis*
chemical_list: D013744:Tetanus Toxin; D013745:Tetanus Toxoid; D009584:Nitrogen