METHOD OF CLEANING DAIRY PIPELINES USING ENZYME PRETREATMENT
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United States of America Patent
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Oct 29, 2002
Grant Date -
Nov 28, 2002
app pub date -
Apr 4, 2001
filing date -
Apr 4, 2001
priority date (Note) -
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Abstract
Improved, non-chlorinated systems and methods for removing soils from hard surfaces are provided wherein such surfaces are initially contacted with a first aqueous use dispersion including a protease enzyme, followed by contact the surface with a second aqueous acidic use dispersion. The enzyme dispersion preferably includes a polyol such as propylene glycol and in use is heated to a temperature up to about 120.degree. C. The acid dispersion may include a surfactant and is also used in a heated condition. The two-component systems of the invention can be used for CIP treatment of dairy or other equipment in lieu chlorinated cleaning agents.
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