Metalaxyl을 ELISA기법을 이용하여 분석하기 위하여 metalaxyl-HSA를 합성하고 이에 대한 항체를 생산하여 competitive indirect ELISA를 위한 최적조건을 조사하였다. Metalaxyl-protein conjugate는 metalaxyl을 가수분해시켜 생성된 metalaxyl acid에 단백질(HSA, OA)을 mixed anhydride방법이나 EDC 첨가방법으로 조제하였고 생성된 항체의 역가는 1:16,000으로 나타났다. Coating Ag의 최적농도는 8㎍/㎖, 배양시간은 4℃에서 1시간 이상, 20℃와 37℃에서는 4시간으로 나타났으며 항체의 희석배수는 1:2,000이 최적으로 나타났다. 항원과 항체의 혼합비율은 0.5 ㎖의 항원에 대해 1 ㎖의 항체가 최적이었으며 이 혼합액의 배양시간은 1시간, antirabbit Ig G-peroxidase conjugate의 배양시간은 30분이 최적으로 나타났다.

A competitive indirect enzyme-linked immunosorbent assay(ELISA) was developed to detect and quantify levels of the fungicide metalaxyl in crops. Antiserum against metalaxyl was demonstrated in rabbits immunized with metalaxyl-human serum albumin(HSA) conjugate. Metalaxyl-protein conjugate was prepared by mixed anhydride and peptide coupling method with EDC. In this assay, metalaxyl-ovalbumin(OA) was coated(8㎍/㎖) on the microtiter plate, which was incubated for 1 hr at 4℃ or 4 hr at 37℃ with diluted antiserum(1:2,000). The optimum volume ratio of antigen and antibody mixture was 0.5: 1, which was incubated for 1 hr at 20℃. The detection of metalaxyl bound on the surface of wells was determined by the reaction(30 min) of antirabbit Ig G-peroxidase conjugate with its substrate.