Abstract
To obtain a specific antiserum for use in enzyme-linked immunosorbent assay (ELISA) of 3-carboxy-4-methyl-5-propyl-2-furanpropanoic acid (CMPF), we prepared a hapten-carrier conjugate in which the CMPF hapten was linked to a carrier protein through the 5-(1-hydrazopropyl) group. The antisera raised against this antigen in guinea pigs had excellent specificity for CMPF, showing little cross-reactivity with closely related compounds and no significant cross-reactivities with other furan compounds. The results indicated that a specific antiserum to CMPF could be produced by an antigen whose CMPF moiety is linked to a carrier protein through a position remote from the inherent functional groups. A standard curve of CMPF by ELISA using a chemiluminescence system showed a high sensitivity and a linearity in the range of 5-100 ng/mL.
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