Patent ID: 8318640

Claim:
A method for identifying peptides useful in a cleaning composition comprising the steps of, (a) contacting a peptide library with an anti-target under conditions favorable for binding between the peptides of the library and the anti-target, wherein the anti-target is a fabric and the peptide library is a phage display library; (b) separating anti-target unbound peptides from anti-target bound peptides; (c) contacting the anti-target unbound peptides with a target under conditions favorable for binding between the anti-target unbound peptides and the target to form target-bound peptide complexes, wherein the target is a human body soil on the fabric; (d) separating the target-bound peptide complexes from anti-target unbound peptides which do not bind to the target; and (e) identifying the target-bound peptides on the target-bound peptide complexes, wherein the identified target-bound peptides are less than 25 amino acids in length, thereby identifying peptides useful in a cleaning composition.