Materials used as fixing agents in the immobilization of enzyme preparations.
21 C.F.R. § 173.357
in effectEffective: 2024-07-01Fixing agents may be safely used in the immobilization of enzyme preparations in accordance with the following conditions:
(a) The materials consist of one or more of the following:
(1) Substances generally recognized as safe in food.
(2) Substances identified in this subparagraph and subject to such limitations as are provided:
(b) The fixed enzyme preparation is washed to remove residues of the fixing materials.
Source: eCFRURL: https://www.ecfr.gov/api/versioner/v1/full/2024-07-01/title-21.xmlFetched: 7/26/2026