title: Bacillus thuringiensis growth, sporulation and δ-endotoxin production in oxygen limited and non-limited cultures.
abstract: The production of crystals and spores ofBacillus thuringiensis var.israelensis was studied under different aeration conditions. The results with 4 l batch cultures showed that for O2 non-limited, cultures cell yield, toxin production and spore count were constant for all oxygen transfer rates (OTR). Under O2 limitation, °-endotoxin concentrations and spore counts were lower than those obtained in non-limited cultures. In addition, δ-endotoxin yields diminished under O2 limitation, suggesting that the toxin synthesis mechanism could have been affected.
authors.affiliation: Centro de Investigación y Desarrollo en Fermentaciones Industriales (CINDEFI), Facultad de Ciencias Exactas UNLP, Calle 47 y 115, 1900, La Plata, Argentina.
authors.forename: C
authors.initials: C
authors.lastname: Avignone-Rossa
authors.forename: J
authors.initials: J
authors.lastname: Arcas
authors.forename: C
authors.initials: C
authors.lastname: Mignone