Calcium ionophore (A23187), free acid

Selman Waksman defined the term antibiotic in 1942 to describe any substance produced by a microorganism that is antagonistic to the growth of other microorganisms in high dilution. While this ...

What does fermentation mean? Fermentation (from latin fermentare) is generally defined as a conversion of material under aerobic or anaerobic conditions influenced by micro-organisms. "Micro-organism" is a collective term for usually ...