日本質量分析学会 第66回質量分析総合討論会

Program

Poster Presentations

Day 2, May 16(Wed.)  Poster

Rapid identification of carotenoid ester isomer in the yellow flowers using LC-PDA-MS/MS

(Suntory Foundation for Life Sciences)
oTakehiro Watanabe, Toshiaki Azuma, Manabu Horikawa, Tohru Yamagaki

We developed the rapid identification method of neoxantihin ester and violaxanthin ester in the yellow flowers using LC-PDA-APCI-MS/MS. The same fragment pattern was observed for neoxanthin and violaxanthin in the MS/MS spectra of the [M+H]+ ion as the precursor ion. In contrast, the fragment pattern from the [M-H2O+H]+ ion of violaxanthin ester was different from that of neoxanthin ester. The fragment ion of C7H8 (92 u) elimination in the MS/MS spectrum of dehydrated violaxanthin ester was produced characteristically via electrocyclic reaction.