Antibacterial compositions
AssigneeLever Brothers Company, Division of Conopco, Inc.
InventorManmohan Bhakoo
Life of this patent
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Abstract
The present invention relates to anti-bacterial compositions comprising particular compounds, to the use of the compounds as anti-bacterial agents, to the preparation of therapeutic or medicinal compositions comprising the compounds and to a method of disinfecting matter including the step of treating matter with the compounds. The compounds are identified as peptides having a molecular weight of at least 5 kD, comprising at least 15% by number of residues of arginine, lysine, ornithine or a mixture thereof and at least 15% by number of residues of arginine, lysine, ornithine, phenylalanine, tyrosine, tryptophan or a mixture thereof. Although the invention is described with reference to used in the fields of food and oral hygiene, the invention has particular utility in the field of household and/or industrial hygiene.
Claims7
A method for disinfecting matter infected with bacteria, comprising:
- the step of
- treating said matter with an antibacterial composition comprising at least 1% by wt. of a surfactant and a pseudo-random synthetic peptide, having an .alpha.-amino bonding group, said peptide having a molecular weight of at least 5 kD and comprising at least 15% by number of residues of arginine, lysine, ornithine or a mixture thereof and at least 15% by number of residues of arginine, lysine, ornithine or a mixture thereof and a least 15% by number of residues of arginine, lysine, ornithine, phenylalanine, tyrosine, tryptophan or a mixture thereof, said peptide comprising no more than three different amino acid residues.
A method for disinfecting matter infected with bacteria, comprising the step of treating said matter with a liquid or paste antibacterial composition comprising:
- a) 0.001-0.1 wt. % of an alpha linked pseudo-random synthetic peptide having a molecular weight of at least 5 kD, and comprising at least 15% by number of residues of arginine, lysine, ornithine or a mixture thereof and at least 15% by number of residues of arginine, lysine, ornithine, phenylalanine, tyrosine, tryptophan or a mixture thereof, said peptide comprising no more than 3 different amino acid residues,
- b) 1-30 wt. % of an ethoxylated alcohol surfactant and,
- c) as the balance of the composition, a compatible aqueous medium.
A method for disinfecting the matter infected with bacteria comprising the step of treating said matter with a liquid or a paste antibacterial composition comprising:
- a) 0.001 to 0.1 wt. % of an alpha linked pseudo random synthetic peptide selected from the group consisting of copolymers of lysine and phenylalanine, arginine and tryptophan and lysine and tryptophan,
- b) 1 to 30 wt. % of an ethoxylated alcohol surfactant, and
- c) as the balance of the composition, a compatible aqueous medium.
Dependencies are inferred from the claim text.