Detection of N-(1-deoxy-D-fructos-1-yl) Fumonisin C1, C2 and C3 in Corn Powder by LC - Orbitrap MS

Abstract

Detection of N-(1-deoxy-D-fructos-1-yl) fumonisin C1, C2 and C3 (NDfrc-FCs) in a reference material of corn powder were performed with LC-Orbitrap MS. The peaks of NDfrc-FCs were eluted 0.1 ~ 0.3 min earlier than those of fumonisin C1, C2 and C3 (FCs), from the C18 column, probably due to their hydrophilic structures having the carbohydrate residues. At negative ionization mode scan with LC-MS analysis, the fragment ions of the tricarballylic acid (TCA) and characteristic fumonisin ions lacking TCA were detected at the identical retention times with those of respective parent NDfrc-FCs. Mass fragmentation patterns of NDfrc-FCs were confirmed to be almost in consistent with those of FCs. This study is the first report of natural occurrence of NDfrc-FC1, FC2, and FC3 in corn powder.