Patent ID: 8883140

Claim:
A liquid surfactant preparation comprising a hydrolytic enzyme and a component stabilizing the surfactant, a hydrolytic enzyme, wherein the component stabilizing the hydrolytic enzyme comprises an oligoaminobiphenyl oligocarboxylic acid selected from the group consisting of a) compounds having the formula (I) wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, and R10 are each —NH 2 , —COOH, or —H, wherein at least two of the residues R1 to R10 are —NH 2 , and at least two of the residues R1 to R10 are —COOH and the further residues are —H, and b) derivatives of a) that are glycosylated, oxidized, N-methylated, N-formylated, or N-acylated on one or more amino groups.