Development and validation of a confirmative LC-MS/MS method for the determination of ß-exotoxin thuringiensin in plant protection products and selected greenhouse crops.

Bacterial products based on Bacillus thuringiensis are registered in many countries as plant protection products (PPPs) and are widely used as insecticides and nematocides. However, certain B. thuringiensis strains produce harmful toxins and are therefore not allowed to be used as PPPs.