Cleaning compositions comprising a specific oxygenase

Details Cleaning compositions comprising a specific oxygenase Cleaning compositions comprising a specific oxygenase

2000-01-10

2002-04-30

Gupta, Yogendra N. (Department: 1751)

Cleaning compositions for solid surfaces, auxiliary compositions

Cleaning compositions or processes of preparing

Enzyme component of specific activity or source

C510S392000, C510S226000, C510S114000, C510S300000, C510S305000, C510S306000, C510S320000, C510S374000, C510S530000

Reexamination Certificate

active

06380145

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to cleaning compositions, including laundry, dishwashing, hard surface cleaner, oral/dental cleaning compositions, comprising a polyphenol/heterocyclic substrate based oxygenase.
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 i.e. 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, 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. These highly coloured flavonoid and carrotenoid dyes are often polycyclic and heterocyclic compounds having a conjugated double bond systems. This chemical structure is often responsible for the pronounced colour of the compounds.
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 detergents. 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 compounds, 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 everyday body soils and/or stains. It is a further object to provide a cleaning composition which provides fabric realistic items cleaning and whitening while providing excellent safety for the fabrics' colours.
The above objective has been met by formulating cleaning compositions comprising a polyphenol/heterocyclic substrate based oxygenase.
It has been surprisingly found an enzymatic bleach system based on a polyphenol/heterocyclic substrate based oxygenase delivers in a cleaning composition, bleach-like benefits in an unexpected broad range of performance areas such as dingy cleaning, whiteness maintenance and stain removal, especially on polyphenols and heterocyclic compounds-containing and everyday body stains/soils. It has also been found that the cleaning compositions of the present invention provide sanitisation of the treated surfaces.
It has been further found that the performance of the cleaning compositions of the present invention is improved by the addition of another enzymatic bleach system, a conventional activated bleach system, a metallo catalyst based bleach system and/or another detergent enzyme.
In a preferred embodiment, the present invention relates to a laundry composition comprising a polyphenol/heterocyclic substrate based oxygenase, further providing fabric realistic items cleaning and whitening while providing excellent safety for the fabrics' colours. In a second embodiment, the present invention relates to dishwashing or household cleaning compositions comprising a polyphenol/heterocyclic substrate based oxygenase and in a third embodiment, the present invention relates to oral/dental care compositions comprising a polyphenol/heterocyclic substrate based oxygenase.
WO92/18683 describes a process for bleaching of dyed textiles such as coloured denim, comprising the treatment with a bleach liquor containing hydrogen peroxide or a source thereof and an enzyme exhibiting peroxidase activity or oxygen and an enzyme exhibiting a suitable oxidase activity. EP 086 139 discloses the cloning and expression of the catechol 2,3 oxygenase for the food, phamaceutical and cosmetic industries. This enzyme is also used for the decontamination of textiles from urushiol and its derivatives and can be added in laundry detergents or body cleaning compositions therefor.
However, the use of a polyphenol/heterocyclic substrate based oxygenase in a cleaning composition for polyphenols and heterocyclic compounds-containing stains/soils and everyday body soils substantive removal and for sanitisation, has never been previously recognised. Nor have been recognised the substantive fabric realistic items cleaning and whitening performance and excellent fabric colour safety benefit when the polyphenol/heterocyclic substrate based oxygenase is used within a laundry detergent composition.
SUMMARY OF THE INVENTION
The present invention relates to cleaning compositions, including laundry, dishwashing, hard surface cleaner, oral/dental cleaning compositions, comprising a polyphenol/heterocyclic substrate based oxygenase, which provide effective and efficient cleaning of coloured stains and/or soils and everyday body soils, and provide sanitisation of the treated surfaces.
Furthermore, the cleaning compositions of the present invention provide fabric realistic items cleaning and whitening performance while providing excellent fabric colour safety when formulated as a laundry detergent composition.
DETAILED DESCRIPTION OF THE INVENTION
The essential component of the cleaning compositions of the present invention is a polyphenol and/or heterocyclic substrate based oxygenase. Preferably said enzyme is further characterised by being an iron sulphur or iron heme oxygenase and/or a heavy metal dependant oxygenase.
All oxygenases of the present invention will pass the following stain removal performance test achieved on standard test fabrics and being compared to a nil-oxygenase reference in same conditions.
The small scale test is done in a launderometer Washtec ROACHES equipped with stainless steel jars of 500 ml. The small scale test is done at 30-40° C. with total wash time of 30 minutes. Tests is done in a 1% detergent solution using the detergent as described in example 10, composition 5. The detergent is dissolved in 400 ml of water with a total hardness between 2.0-3.0 mmol Ca2+/L. The pH of the 1% detergent solution is adjusted with an acid (citric acid) or an alkali (NaOH) to pH 8-9. Each jar also contains 15 steel ball for better agitation. Standard stain test fabrics are supplied by wfk-Testgewebe Gmbh (Christenfeld, 10-Brueggen, Germany). At least two replicates are run per test. The size of the stains is 3 cm×4 cm. The standard test fabric having the polyphenol/heterocyclic substrate are the wfk10 J (tea-stained cotton); wfk10 K (coffee-stained

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