The micro-organisms in this library require a Level 1 Bio-safety licence for use. Please contact the library for advice.

Reference information can be found online at the library’s website on each of the current micro- organisms listed within the library. This includes any proprietary or commercial names, the type of micro-organism, possible names or terms which may appear on food labelling.

Some of the additives produced by the E-Number micro-organisms can normally be used without any licensing. Please contact the library for information, advice or use.


The E-NUMBER v.2 library welcomes any new engineered or edited editions, products or new information on the micro-organisms.

contact: enumbersv2 @ microfoodlibrary dot org