---
kind: "section"
citation: "21 C.F.R. § 573.500"
title: "21"
number: "573.500"
heading: "Condensed, extracted glutamic acid fermentation product."
url: "https://uscodex.org/cfr/21/573.500"
---

# §573.500. Condensed, extracted glutamic acid fermentation product.


Condensed, extracted glutamic acid fermentation product may be safely used in animal feed under the following conditions:

- (a) The additive is a concentrated mixture of the liquor remaining from the extraction of glutamic acid, combined with the cells of Corynebacterium glutamicum used to produce the glutamic acid.
- (b) **It is used or intended for use as follows—**
  - (1) **In poultry feed as a source of protein in an amount not to exceed 5 percent of the total ration.**
  - (2) **In cattle feed as a source of protein in an amount not to exceed 10 percent of the feed.**
- (c) In order to assure safe use, the label and labeling of the additive shall bear, in addition to the other information required by the Act, the following:
  - (1) **The name of the additive.**
  - (2) **A statement of the concentration of the additive contained in any mixture.**
  - (3) **Adequate directions for use.**

## Notes

### Amendments

[41 FR 38652, Sept. 10, 1976, as amended at 89 FR 33231, Apr. 29, 2024]

### Authority

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

### Source

Source: 41 FR 38652, Sept. 10, 1976, unless otherwise noted.

### Amendments

[41 FR 38652, Sept. 10, 1976, as amended at 89 FR 33231, Apr. 29, 2024]