Table 1.

Identification of OLEA and its metabolites in lumen, plasma, and ileum tissue samples by LTQ–Orbitrap–MS.

	Compound	Precursor Ion Measured m/z [M − H]−	Tentative Formula [M − H]−	Mass Error (ppm)	RT (min)	MS/MS
M1	OLEA	319.1184	C17H19O6	0.785	6.81	153/183
Phase	I
M2	OH-TY	153.0554	C8H9O3	0.779	3.67	123
M3	OLEA + H2	321.1337	C17H21O6	0.435	7.05	185/199/143
M4	OLEA + OH	335.1128	C17H19O7	0.271	6.82	131/199
M5	OLEA + H2O	337.1282	C17H21O7	0.021	6.69	201/133
Phase	II
M6	OLEA + CH3	333.1348	C18H21O6	0.835	8.51	167
M7	OLEA + OH + CH3	349.1277	C18H21O7	−0.479	7.38	167/199
M8	OLEA + H2O + CH3	351.1445	C18H23O7	1.771	7.20	215/167
M9	OLEA + H2 + Glucu	497.1665	C23H29O12	1.247	6.53	199/329
M10	OLEA + H2O + Glucu	513.1621	C23H29O13	1.833	6.43	329/215
M11	OLEA + H2O + CH3 + Glucu	527.1743	C24H31O13	0.963	6.50	343/201

RT: retention time; Glucu: glucuronic acid; OH-TY: hydroxytyrosol.