Effect of high concentration of nutrients onBacillus thuringiensis cultures |
| |
Authors: | J. Arcas O. Yantorno R. Ertola |
| |
Affiliation: | (1) Centro de Investigación y Desarrollo en Fermentaciones Industriales Facultad de Ciencias Exactas, 47 y 115, 1900 La Plata, Angentina |
| |
Abstract: | Summary Bacterial insecticide production using a strain ofBacillus thuringiensis var. kurstaki was studied in batch culture considering the influence of increasing concentration of components of a glucose — yeast extract — mineral salts medium.It was found that spore counts were increased from 1.08×1012 spores. 1–1 to 7.36×1012 spores. 1–1 and toxin level from 1.05 mg.ml–1 to 6.85 mg.ml–1, when the concentration of glucose was increased from 8 to 56 (g 1–1), with the corresponding increase in the rest of medium components. Higher concentration of nutrients inhibit either spore count or toxin production.Preliminary experiments of fed-batch cultures which allows the use of high amounts of nutrients were also carried out. In this case spore counts of 1.2×1013 spores.1–1 were achieved. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |