Patent ID: 7288416

Claim:
A substrate for detecting E. coli O-157 or verotoxins, which comprises an ionic polymer bound thereto through two or more ionic bonds, wherein the ionic polymer whose main chain polymer comprises a substituted or unsubstituted hydrocarbon backbone or poly-amino-acid-derived backbone, which comprises a component unit (I) represented by formula (3) wherein L denotes disaccharide units (Galα1-4 Galβ1 —O—) represented by formula (6) which are capable of interacting with E. coli O-157 or verotoxins; X denotes a spacer, wherein the X comprises a hydrophobic group comprising a linear alkylene group of 8 to 12 carbon atoms; B denotes an amide bond; A denotes an ionic functional group, which is a carboxylate; each of R 2 and R 3 denote a hydrogen atom; and Z 2 denotes ethylene.