Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – Enzyme component of specific activity or source
Reexamination Certificate
2000-01-10
2004-05-11
Douyon, Lorna M. (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
Enzyme component of specific activity or source
C510S300000, C510S306000, C510S321000, C510S374000
Reexamination Certificate
active
06734155
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to cleaning compositions, including laundry, dishwashing, hard surface cleaner, oral/dental cleaning compositions, comprising a surfactant system, an organic acid, a hydrogen peroxide source and a oxidoreductase with an &agr;/&bgr;-hydrolase fold and a catalytic triad consisting of the amino acid residues serine, histidine and aspartic acid.
BACKGROUND OF THE INVENTION
Performance of a cleaning product, for use in washing or cleaning 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.
Coloured stains/soils are often difficult to remove effectively from a soiled item. Highly coloured stains and soils ire, derived from fruit and/or vegetables are particularly challenging soils to remove. This stains and soils contain colour-bodies based on carotenoids compounds such as &agr;-, &bgr;- and &ggr;-carotene and lycopene and xanthophyls, on porphyrins such as chlorophyll and on flavonoid pigments and dye components. This latter group of natural flavonoid based dye components comprises the highly coloured anthocyanins dyes and pigments based on pelargonidin, cyanidin, delphidin and their methyl esters and the antoxanthins. These compounds are the origin of most of the orange, red, violet and blue colours occurring in fruits and are abundant in all berries, cherry, red and black currents, grapefruits, passion fruit, oranges, lemons, apples, pears, pommegranate, red cabbage, red beets and also flowers. Derivatives of cyanidin are present in up to 80% of the pigmented leaves, in up to 70% of fruits and in up to 50% of flowers. Specific examples of such soils would include tea, coffee, spices such as curry and paprika, orange, tomato, banana, tea, mango, broccoli, carrot, beetroot, spinach soils and grass. Ball pens' ink are also known to be highly difficult coloured stains to be removed.
In addition, the complex nature of everyday “body” soils typically found on pillow cases, T-shirts, collars and socks, provides a continuous thorough cleaning challenge for cleaning products. These soils are difficult to remove completely and often residues build up on fabric leading to dinginess and yellowing. Everyday body soils are also found on sanitary and kitchen surfaces such as bathtubs, toilet bowl and dishware.
The items can be fabrics, hard surfaces, dishware such as plasticware. glassware or chinaware, teeth and mouth.
Traditionally, high levels of bleaching agents, optionally with bleach precursors and/or bleach enhancers, are incorporated in cleaning compositions. Bleaching agents are compounds which are precursors of hydrogen peroxide which is formed in the course of the washing procedure. Perborates and percarbonates are the most important examples of such hydrogen peroxide precursors.
In view of the above, there exits clearly a continuous need to provide cleaning compositions which have an excellent detergency performance. Accordingly it is an object of the present invention to provide a cleaning composition which provides effective and efficient cleaning of coloured and/or everyday body stains and/or soils. It is a further object to provide a cleaning composition which provides fabric realistic items cleaning and whitening while avoiding colour fading.
The above objective has been met by formulating cleaning compositions comprising a surfactant system, an organic acid, a hydrogen peroxide source and an oxidoreductase with an &agr;/&bgr;-hydrolase fold and a catalytic triad consisting of the amino acid residues serine, histidine and aspartic acid, usually referred to as “non-heme haloperoxidase”.
In a preferred embodiment, the present invention relates to a laundry composition comprising a surfactant system, an organic acid, a hydrogen peroxide source and a non-heme haloperoxidase further providing fabric realistic items cleaning and whitening. In a second embodiment, the present invention relates to dishwashing or household cleaning compositions comprising a surfactant system, an organic acid, a hydrogen peroxide source and a non-heme haloperoxidase and in a third embodiment, the present invention relates to oral/dental care compositions comprising a surfactant system, an organic acid, a hydrogen peroxide source and a non-heme haloperoxidase.
It has been surprisingly found that a non-heme haloperoxidase based enzymatic bleach system delivers in a detergent composition. bleach-like benefits in an unexpected broad range of performance areas such as dingy cleaning, whiteness maintenance and stain removal. It has also been found that the cleaning compositions of the present invention provide sanitisation of the treated surfaces. It has been further found the performance of the cleaning compositions of the present invention is enhanced by the addition of another enzymatic bleach system, a conventional activated bleach system, a metallo catalyst based bleach system and/or another detergent enzyme.
WO95/27046 discloses antimicrobial compositions comprising a vanadium haloperoxidase, a source of halide and hydrogen peroxide or a source thereof, wherein the vanadium haloperoxidase is a chloroperoxidase obtainable from
Curvularia inaequalis
. These enzymatic antimicrobial compositions generally comprise from 0.01 to 50% by weight of one or more surfactants.
WO96/06909 describes enzymatic, active oxygen-releasing mixtures which might be used as oxidising agents for preparing chemical compounds and in bleaching, cleaning and disinfecting agents. Said mixtures contain oxidoreductase with an &agr;/&bgr;-hydrolase fold and a catalytic triad consisting of the serine, histidine and aspartic acid amino acids; a hydrogen peroxide source and an aqueous solution of an organic acid or its salt. These organic acids or salts are converted into organic peracids at a pH value from 3.5 to 6.0 and temperature from 15° C. to 80° C.
However, the use of an enzymatic bleach system comprising an organic acid, a hydrogen peroxide source and a oxidoreductase with an &agr;/&bgr;-hydrolase fold and a catalytic triad consisting of the amino acid residues serine, histidine and aspartic acid, in a surfactant-containing cleaning composition, has never been previously recognised.
SUMMARY OF THE INVENTION
The present invention relates to cleaning compositions, including laundry, dishwashing, hard surface cleaner, oral/dental cleaning compositions, comprising a surfactant system, an organic acid, a hydrogen peroxide source and an oxidoreductase with an &agr;/&bgr;-hydrolase fold and a catalytic triad consisting of the amino acid residues serine, histidine and aspartic acid. The cleaning compositions of the present invention provide effective and efficient cleaning of coloured and/or everyday body stains and/or soils and sanitisation of the treated surfaces.
In a preferred embodiment, the present invention relates to laundry detergent compositions providing fabric realistic items cleaning and whitening while avoiding colour fading.
DETAILED DESCRIPTION OF THE INVENTION
Non-heme Haloperoxidase Enzyme:
An essential component of the cleaning compositions of the invention is an oxidoreductase with an &agr;/&bgr;-hydrolase fold and a catalytic triad consisting of the amino acid residues serine, histidine and aspartic acid, usually referred to as a non-heme haloperoxidase.
It has been found that the cleaning compositions of the present invention provide effective and efficient cleaning of coloured and everyday body stains and/or soils and in particular provide fabric realistic items cleaning and whitening while avoiding colour fading when formulated as a laundry detergent composition.
In addition, the cleaning compositions of the present invention provide sanitisation of the treated surfaces.
Sanitisation includes all positive effects obtained by the inhibition or reduction of microbial activity on fabrics and other surfaces, such as the prevention of malodour development and bacterial/fungal growth. For example, it provides p
Busch Alfred
Herbots Ivan Maurice Alfons Jan
Cook C. Brant
Douyon Lorna M.
Elhilo Eisa
Taffy Frank
The Procter & Gamble & Company
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