§ 173.135 Catalase derived from Micrococcus lysodeikticus.

Bacterial catalase derived from Micrococcus lysodeikticus by a pure culture fermentation process may be safely used in destroying and removing hydrogen peroxide used in the manufacture of cheese, in accordance with the following conditions.

1. (a) The organism Micrococcus lysodeikticus from which the bacterial catalase is to be derived is demonstrated to be nontoxic and nonpathogenic.
2. (b) The organism Micrococcus lysodeikticus is removed from the bacterial catalase prior to use of the bacterial catalase.
3. (c) The bacterial catalase is used in an amount not in excess of the minimum required to produce its intended effect.