Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – Enzyme component of specific activity or source
Patent
1994-04-24
1998-09-22
Fries, Kerq A.
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
Enzyme component of specific activity or source
510530, 510226, 510305, 510306, 510309, C11D 3386, C11D 3395
Patent
active
058113827
DESCRIPTION:
BRIEF SUMMARY
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a 371 of PCT/DK92/00383 filed Dec. 18, 1992, the contents of which are incorporated herein by reference.
TECHNICAL FIELD
The present invention relates to the use of proteases derived from members of the genus Nocardiopsis in detergent additives or compositions, or wash liquors, comprising specific bleaching systems.
BACKGROUND ART
Bleaching systems have been suggested for incorporation into detergent compositions in order to obtain bleaching effects on stained fabric, or in order to prevent transfer of a textile dye from a dyed fabric to another fabric during washing or rinsing.
Detergent compositions or wash liquors comprising a bleaching system have been described in e.g. International Patent Publications WO 89/09813 and WO 91/05839. Bleaching systems as described herein comprise enzymes exhibiting peroxidase activity and hydrogen peroxide or a precursor thereof, or enzymes exhibiting a suitable oxidase activity.
A major drawback in applying such bleaching systems to detergent compositions is that proteases present in such compositions may be strongly affected by the bleaching systems, thereby hampering the washing performance of the detergent composition.
Some members of the genus Nocardiopsis are known to produce proteases. In International Patent Application WO 88/03947, alkaline proteases obtainable from protease producing strains of Nocardiopsis have been described for their use as detergent additives, in particular as detergent additives for cold water laundering.
SUMMARY OF THE INVENTION
We have now surprisingly found that proteases derived from members of the genus Nocardiopsis are more stable in the presence of the above mentioned bleaching systems than other detergent proteases.
Accordingly, the present invention provides a detergent composition comprising a protease derived from a member of the genus Nocardiopsis, and: (a) an enzyme exhibiting peroxidase activity and hydrogen peroxide or a precursor thereof, and/or (b) an enzyme exhibiting a suitable oxidase activity.
In another aspect, the invention provides a detergent additive comprising a protease derived from a member of the genus Nocardiopsis, and: (a) an enzyme exhibiting peroxidase activity and hydrogen peroxide or a precursor thereof, and/or (b) an enzyme exhibiting a suitable oxidase activity.
DETAILED DISCLOSURE OF THE INVENTION
The present invention relates to proteases derived from members of the genus Nocardiopsis, which proteases according to the invention have proved to be stable in the presence of peroxidase based bleaching systems.
More specifically, the invention relates to the use of proteases derived from members of the genus Nocardiopsis in cleaning processes, e.g. household laundering, industrial and institutional laundering or cleaning, and dish washing, or fabric cleaning processes, in which processes solutions containing enzymes exhibiting peroxidase activity, or enzymes exhibiting suitable oxidase activity, are used for the purpose of either bleaching stains on surfaces in contact with the solutions, or inhibiting the transfer of a textile dye from a dyed fabric to another fabric.
The present invention provides detergent compositions comprising proteases derived from a member of the genus Nocardiopsis, and enzymes exhibiting peroxidase activity together with hydrogen peroxide or a precursor thereof, or alternatively enzymes exhibiting a suitable oxidase activity.
The invention also provides detergent additives comprising proteases derived from a member of the genus Nocardiopsis, and enzymes exhibiting peroxidase activity together with hydrogen peroxide or a precursor thereof, or alternatively enzymes exhibiting a suitable oxidase activity.
Optionally, the detergent additive or detergent composition also contains accelerators.
Nocardiopsis Proteases
Microorganisms belonging to the actinomycete Nocardiopsis are well known in the literature. Some examples of species and strains described are N. dassonvillei, Type Strain ATCC 23218; N. dassonvill
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Aaslyng Dorrit Anita
Damhus Ture
Nielsen Egon
Fries Kerq A.
Lambiris Elias J.
Novo Nordisk A S
Zelson Steve T.
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