Figure 2.
UPLC-MS/MS chromatography with MRM modes for (A) AFB1 standard; (B) AFB2 standard; (C) OTA standard; (D) AFB1 positive strain; (E) AFB2 positive strain; (F) OTA positive seed sample. Three precursor-to-product ion transitions were simultaneously monitored at m/z 313.0–285.1, m/z 313.0–241.3, m/z 313.0–185.1 for AFB1; m/z 315.0–259.0, m/z 315.0–287.0, m/z 315.0–243.0 for AFB2; 329.0–243.0, 329.0–311.0, 329.0–283.0 for AFG1; m/z 331.0–235.1, m/z 331.0–257.0, m/z 331.0–189.0 for AFG2; and m/z 404.0–358.1, m/z 404.0–341.1, m/z 404.0–239.2 for OTA.