Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Patent
1998-03-06
1999-10-12
Fries, Kery
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
510321, 510392, 510393, 510530, C11D 3386
Patent
active
059655070
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to cleaning compositions, including laundry compositions containing a chondroitinase enzyme.
More in particular, the invention relates to compact detergent compositions, granules and liquids as well having said enzyme in the composition.
BACKGROUND OF THE INVENTION
Performance of a detergent product, for use in washing or cleaning method, such as a laundry method, is judged by a number of factors, including the ability to remove soils, and the ability to prevent the redeposition of the soils, or the breakdown products of the soils on the articles in the wash.
Stains comprising body soils like skin flakes and sebum based stains are often difficult to remove effectively from a soiled substrate. The substrates can be fabrics like collar, sleeve, underwear, but also towels, sheets or clothes.
Chondroitin sulphates B are common in skins. They are proteoglycans, also called protein polysaccharides with a total MW of 2.times.10.sup.5 to 2.times.10.sup.6. They contain between 20 to 60 polysaccharide chains per molecule.
It is known that chondroitinase enzymes have the ability to degrade the complex polysaccharide chains found in chondroitin sulphates. In the art chondroitinases are used in the pharmaceutical or medical field. commercially available are the chondroitinase enzyme types ABC, AC, B and C from Sigma.
In the Japanese patent application J04330280 (Seikagaku) is disclosed a stabilised dry chondroitinase ABC enzyme with good storage stability and suitable for use in medical injection.
In EP 576 294 (Seikagaku) is disclosed a crystallisable purified chondroitinase ABC used in a composition together with serum albumin and gelatin to treat intervertebral disc displacement. When used as a drug the activity is apparently hardly lost.
However, benefits for use of chondroitinase ABC, AC, B and/or C in cleaning compositions have not been previously recognized.
SUMMARY OF THE INVENTION
We have now found that chondroitinase enzyme may valuably be incorporated into cleaning compositions, specifically at a level of from 0.0001% to 2% of the composition by weight of active enzyme. The inclusion of such enzyme provides stain/soil removal benefits. Removal of soils/stains, and in particular the removal of body soils/stains and/or sebum based stains is enabled. We now have surprisingly found that application of chondroitinase at above-mentioned levels in cleaning compositions delivers an important boost of the cleaning performance.
It is an object of the present invention to provide cleaning compositions containing chondroitinase enzyme and in particular to provide laundry detergent compositions containing said enzyme providing enhanced body soil removal from fabrics.
DETAILED DESCRIPTION OF THE INVENTION
An essential component of the cleaning compositions of the invention is a chondroitinase enzyme. This enzyme is incorporated into the compositions in accordance with the invention at a level of from 0.0001% to 2%, preferably from 0.0005% to 1.0%, more preferably from 0.001% to 0.2% active enzyme by weight of the composition.
By chondroitinase enzyme it is meant herein any enzyme which degrade, for instance hydrolyze and/or modify, complex polysaccharide chains found for instance in chondroitin sulphates.
Chondroitinase ABC, AC, B and C are also called chondroitin ABC, AC, B and C lyase and classified as EC 4.2.2.4, EC 4.2.2.5, and EC 4.2.2--respectively.
Chondroitinase variants either naturally occuring or made via genetic engineering as part of the present invention may be specifically designed with regard to the optimization of performance efficiency in the detergent compositions of the invention. For example, variants may be designed such that the compatibility of the enzyme to commonly encountered components of such compositions is increased.
Alternatively, the variant may be designed such that the optimal pH, bleach stability, catalytic activity and the like of the enzyme variant is tailored to suit the particular detergent application.
The detergent com
REFERENCES:
patent: 4761401 (1988-08-01), Couchman et al.
patent: 5703205 (1997-12-01), Hashimoto et al.
patent: 5773277 (1998-06-01), Hashimoto et al.
Brooker Anju Deepali Massey
Dodd Ian Martin
Oubrahim Youssef
Thoen Christiaan Arthur Jacques
Cook C. Brant
Fries Kery
Procter & Gamble Company
Rasser Jacobus C.
Zerby Kim W.
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