. 2018 Oct 16;9:1499. doi: 10.3389/fpls.2018.01499

Table 3.

HPLC-APCI-MS² analysis and tentative structures of carotenoids in petals of O. fragrans.

Peak	tR(min)	λmax (nm)	% (III/II)	(+) APCI-MS² (m/z)	Tentative compound	Reference
c1	15.05	444, 471	63	569.4[M + H]⁺, 551.4[M + H-18]⁺	Lutein	Standard
c2	16.54	450, 476	25	569.4[M + H]⁺	Zeaxanthin	Standard
c3	18.99	440, 470	23	553.4[M + H]⁺, 535.4[M + H-18]⁺, 461.4[M + H-72]⁺	α-Cryptoxanthin	Rivera et al., 2014
c4	19.86	450, 475	33	553.4[M + H]⁺, 535.4[M + H-18]⁺, 461.4[M + H-72]⁺	β-Cryptoxanthin	Standard
c5	21.46	445, 472	62	537.4[M + H]⁺, 457.4[M + H-80]⁺	α-Carotene	Standard
c6	23.18	451, 476	31	537.4[M + H]⁺, 457.4[M + H-80]⁺	β-Carotene	Standard