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Articles

Development a monoclonal antibody-based enzyme-linked immunosorbent assay for screening pyrimethanil in fruits and vegetables

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Pages 548-563 | Received 26 Dec 2018, Accepted 09 Apr 2019, Published online: 13 May 2019

Figures & data

Figure 1. Chemical structures of the three anilinopyrimidine fungicides (pyrimethanil, cyprodinil and mepanipyrim) and of the three pyrimethanil haptens (pMm, pMn and pMp).

Figure 1. Chemical structures of the three anilinopyrimidine fungicides (pyrimethanil, cyprodinil and mepanipyrim) and of the three pyrimethanil haptens (pMm, pMn and pMp).

Figure 2. Synthesis route of pMm, N-succinimidyl ester of hapten pMm, pMm-BSA, pMm-HSA and pMm-OVA.

Figure 2. Synthesis route of pMm, N-succinimidyl ester of hapten pMm, pMm-BSA, pMm-HSA and pMm-OVA.

Table 1. Titre and specificity of the immunized mice.

Table 2. The titre of each monoclonal antibody, and its sensitivity to pyrimethanil.

Figure 3. The standard curve for pyrimethanil using ic-ELISA: (a) typical best fit calibration curves of the ic-ELISA with pyrimethanil concentration range from 0.001 to 100 ng/mL and (b) the linearity was good from 0.03 to 3 ng/mL which has a linear regression equation and acceptable correlation (R2). Note that B and B0 are the absorbance of samples with and without pyrimethanil, respectively (n = 5).

Figure 3. The standard curve for pyrimethanil using ic-ELISA: (a) typical best fit calibration curves of the ic-ELISA with pyrimethanil concentration range from 0.001 to 100 ng/mL and (b) the linearity was good from 0.03 to 3 ng/mL which has a linear regression equation and acceptable correlation (R2). Note that B and B0 are the absorbance of samples with and without pyrimethanil, respectively (n = 5).

Table 3. Cross-reactivity of the mAb 1F05 to pyrimethanil and related compounds tested by ic-ELISA.

Table 4. Mean recoveries and coefficients of variation (CV) for pyrimethanil in fruit and vegetables and the correlations between the results of ic-ELISA and HPLC-MS/MS (n = 5).