Effect of minerals on the production of the delta endotoxin byBacillus thuringiensis subsp.israelensis |
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| Authors: | D P Sikdar M K Majumdar S K Majumdar |
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| Institution: | (1) Department of Food Technology & Biochemical Engineering, Jadavpur University, 700 032 Calcutta, India;(2) Central Drug Laboratory, 3 Kyd Street, 700 016 Calcutta, India |
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| Abstract: | Summary A study has been made of the mineral requirements ofBacillus thuringiensis subsp.israelensis for production of the mosquitocide delta endotoxin. The optimum concentrations of K2HOP4, MgSO4.7H2O and CaCO3 for toxin production are 1g/l, 0.3g/l and 1g/l respectively while the elements Fe, Mn, Cu are required at levels of 2  g/ml, 5 g/ml and 0.25 g/ml respectively. |
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