Abstract
Bacillus thuringiensis (Bt) is the most widely used biopesticide producer in the biological control market. It is very critical for the Bt pesticide industry to be able to achieve a high yield in the Bt fermentation process in order to reduce its cost and compete with chemical pesticides in the market. We review the overall development of Bt fermentation process research and provide our point of view for the future research opportunities and potential improvements. This minireview covers the areas of fermentation physiology, growth dynamics and high-yield process control. It is pointed out that many studies aimed to improve spore count and process research focusing on toxin protein yield is lacking. In addition, significant development opportunities reside in the process development for the genetically engineered Bt strains expressing multiple toxin proteins.
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