Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Patent
1997-02-04
1998-08-04
Fries, Kery
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
510220, 510223, 510229, 510230, 510235, 510392, 510393, 510521, C11D 3395, C11D 3386, C11D 337
Patent
active
057893624
DESCRIPTION:
BRIEF SUMMARY
This invention relates to detergent compositions, including dishwashing and laundry compositions, containing a lipoxidase enzyme.
The overall performance of a detergent product, for use in washing or cleaning method, such as a laundry or dishwashing 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.
Food soils are often difficult to remove effectively from a soiled substrate. Bleachable soils derived from fruit and/or vegetable juices are particularly challenging soils to remove. Specific examples of such soils would include hydrophobic bleachable food soils, particularly those having carotenoid chromophores, hereinafter referred to as carotenoid soils. Carotenoid soils can be derived from carrots and tomatoes, and any processed products containing these components as well as certain tropical fruits and saffron.
Lipoxidase enzymes are used in the baking industry to oxidize naturally occurring yellow carotene pigment in the flour. The value of the use of lipoxidase enzymes in detergent formulations, particularly those designed for use in laundry, dishwashing and household cleaning operations has not been previously recognized.
The Applicants have now found that lipoxidase enzymes provide bleachable stain/soil removal benefits when included as components of detergent compositions. The removal of hydrophobic bleachable food soils, particularly those containing carotenoids is especially enabled.
Another problem arising during certain washing operations is the redeposition of coloured/bleachable food soils from the wash solution onto other articles in the wash or onto the vessel containing the wash solution. Said vessel may, where the wash method is a manual dishwashing method, be a bowl or the kitchen sink, or alternatively may be a laundry or automatic dishwashing machine. The problem is particularly noticeable when the washload includes articles soiled by foods naturally containing significant levels of highly coloured carotenoid soils.
The Applicant has found that plastic articles in the wash, and areas of the interior of the wash vessel which are made of plastic material, are particularly susceptible to the deposition of coloured food soils from the wash solution. Said soils can interact with the surface of such plastic substrates producing staining which can be very difficult to remove.
A general solution to the problem of bleachable food soil deposition is to bleach the fugitive soils in the wash solution before they have the opportunity to be transferred to other articles in the wash. The Applicant has now found that lipoxidase enzymes may be used to provide bleaching of such fugitive coloured/bleachable food soils, and thus to inhibit the transfer of these soils to other available substrates. The use of a lipoxidase enzyme for this purpose has not been disclosed in the art.
The Applicants have also found that the inclusion of a lipoxidase enzyme into a colourless liquid detergent composition aids bleaching of any coloured inpurities, and thus helps maintain the colourless and clear nature of the composition.
It is an object of the present invention to provide detergent compositions containing a lipoxidase enzyme, which provide soil/stain removal benefits, when used cleaning and washing operations.
It is a related object of the present invention to provide laundry and dishwashing detergent compositions containing a lipoxidase enzyme, which provide enhanced carotenoid soil/stain removal.
It is a further object of the present invention to provide the use of a lipoxidase enzyme to inhibit the transfer of a bleachable food soil from an aqueous wash solution to a substrate in a washing method.
SUMMARY OF THE INVENTION
According to the present invention there is provided a detergent composition comprising at least one detergent component selected from a surfactant and a builder compound characterized in that said composition contains a lipoxidase enzyme
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patent: 4011169 (1977-03-01), Diehl et al.
patent: 4710313 (1987-12-01), Miyajima et al.
patent: 4836946 (1989-06-01), Dixit
patent: 5413727 (1995-05-01), Drapier et al.
patent: 5427707 (1995-06-01), Drapier et al.
Baeck Andre
Busch Alfred
Foley Peter Robert
Jones Lynda Anne
Ofosu-Asante Kofi
Bolam B. M.
Echler, Sr. Richard S.
Fries Kery
The Procter & Gamble Co.
Zerby K. W.
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