Dr Harper added bacillus subtilis PXN® 21® is a natural (non-genetically modified) organism found in a number of human supplement products in the Bio-Kult range formulated by ADM Protexin Ltd ...

The sterile filtrates of plain and dextrose broth cultures of typhoid bacilli liberate acid from ethyl butyrate. The liberation of this acid is due to the esterase activity of a ferment present in ...