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Effect of the media composition on the growth parameters and biological properties ofBacillus thuringiensis
M M Faloci1, O M Yantorno, H A Marino
1Centro de Investigación y Desarrollo en Fermentaciones Industriales Facultad de Ciencias Exactas UNLP, La Plata, Argentina.
Abstract:
The effects of media composition on growth parameters, total protein production (including delta-endotoxin) and its relation to the biological properties ofBacillus thuringiensis var.israelensis was investigated. The replacement of glucose by glycerol as the carbon source yielded higher concentrations of delta-endotoxin. This increase in toxicity was associated with increased amounts of the 130 kDa polypeptide fraction. The biocide activity was not related to haemolytic activity. specific growth rate nor spore count.
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