---
kind: "section"
citation: "21 C.F.R. § 173.135"
title: "21"
number: "173.135"
heading: "Catalase derived from Micrococcus lysodeikticus."
url: "https://uscodex.org/cfr/21/173.135"
---

# §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.

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

## Notes

### Authority

Authority: 21 U.S.C. 321, 342, 348.

### Source

Source: 42 FR 14526, Mar. 15, 1977, unless otherwise noted.