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US 2022/0033737 A1Published application
Compositions for medical instrument cleaning
AssigneeDanisco US Inc.
InventorsArjen HOEKSTRA, Michael STONER, Zhenfeng ZHAO
Life of this patent
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Abstract
Disclosed herein are compositions comprising a nonionic surfactant and one or more inherently stable subtilisin, and methods related to the use of such compositions for the cleaning of medical and dental instruments.
Claims27
A medical or dental instrument detergent composition comprising:
- between about 1% to 15% by weight of a nonionic surfactant;
- between about 250 ppm and about 10000 ppm of an inherently stable subtilisin variant
- wherein the composition does not comprise a substantial amount of a protease stabilizer.
The detergent composition of claim 11, wherein the biodegradable chelating agent is selected from the group of sodium salts of glutamic acid diacetic acid (GLDA), methylglycinediacetic acid (MGDA), and itaconic acid.
A method for cleaning a medical or dental instrument comprising:
- a) contacting the medical or dental instrument in a detergent for medical or dental instrument cleaning comprising between about 1% to 15% by weight of a nonionic surfactant;
- between about 250 ppm and about 10000 ppm of an inherently stable subtilisin variant;
- wherein the composition does not comprise a substantial amount of a protease stabilizer;
- b) allowing the instrument to be contacted for a period of time sufficient to reduce or remove soils on the instrument;
- and
- c) optionally rinsing the instrument.
3 more elements
Dependencies are inferred from the claim text.