Table 1.

Identified compounds in the analyzed olive fruit and olive paste extracts.

Peak Number	Proposed Compound	Molecular Formula	RT 1 (min)	m/z (Exp) 2	m/z (Theor) 3	Error (ppm)	Product 4	References
1	Quinic acid	C7H12O6	4.03	191.0562	191.0561	0.3	OF, OP	[44,48]
2	Citric acid	C6H8O7	5.32	191.0196	191.0203	2.8	OF	[54]
3	Oxydized hydroxytyrosol	C8H8O3	5.90	151.0396	151.0401	3.4	OP	[48]
4	Loganic acid	C16H24O10	7.36	375.1305	375.1297	−2.2	OF, OP	[54]
5	Hydroxytyrosol glucoside	C14H20O8	7.54	315.1091	315.1085	−1.7	OF, OP	[38,49,50]
6	1-β-D-Glucopyranosyl acyclodihydroelenolic acid	C17H28O11	7.69	407.1574	407.1559	−3.8	OF, OP	[53]
7	Oleoside/Secologanoside	C16H22O11	7.97	389.1095	389.1089	−1.4	OF, OP	[49,50]
8	Hydroxytyrosol	C8H10O3	8.14	153.0554	153.0557	2.2	OF, OP	[38,44,48,49,50]
9	Elenolic acid glucoside	C17H24O11	8.36	403.1259	403.1246	−3.3	OF, OP	[49,50]
10	Dialdehydic form of decarboxymethyl elenolic acid	C9H12O4	8.58	183.0659	183.0663	2.0	OF, OP	[48]
11	Verbascoside	C29H36O15	8.63	623.1993	623.1981	−1.9	OF, OP	[49,50,51]
12	Hydroxyoleuropein	C25H32O14	8.68	555.1724	555.1719	0.9	OF, OP	[46,55]
13	Luteolin glucoside	C21H20O11	8.88	447.0944	447.0933	−2.5	OF, OP	[49,50]
14	Dihydrooleuropein	C25H36O13	8.94	543.2075	543.2083	1.5	OF, OP	[47]
15	Oleuropein	C25H32O13	9.88	539.1809	539.1771	−7.1	OF, OP	[49,50,51]
16	Ligstroside	C25H32O12	10.80	523.1824	523.1821	−0.5	OF, OP	[49]
17	Oleuropein aglycone isomer 1	C19H22O8	11.14	377.1250	377.1242	−2.2	OF, OP	[38,44,48,49]
18	Elenolic acid	C11H14O6	11.32	241.0716	241.0718	0.6	OF, OP	[48,49]
19	Oleuropein aglycone isomer 2	C19H22O8	11.55	377.1259	377.1242	−4.6	OF, OP	[38,44,48,49]
20	Oleacein/Decarboxymethyl oleuropein aglycone	C17H20O6	11.97	319.1190	319.1187	0.9	OF, OP	[38,48,49]
21	Luteolin	C15H10O6	12.23	285.0406	285.0405	−0.5	OF, OP	[49,51]
22	Ligstroside aglycone isomer 1	C19H22O7	12.71	361.1295	361.1293	−0.2	OF, OP	[38,48,49]
23	Oleuropein aglycone isomer 3	C19H22O8	13.19	377.1253	377.1242	−2.8	OF, OP	[38,48,49]
24	Ligstroside aglycone isomer 2	C19H22O7	13.26	361.1286	361.1293	1.9	OF, OP	[38,48,49]
25	Oleuropein aglycone isomer 4	C19H22O8	13.86	377.1262	377.1242	−5.3	OF, OP	[38,49]
26	Ligstroside aglycone isomer 3	C19H22O7	14.90	361.1289	361.1293	0.9	OF, OP	[38,48,49]
27	Oleocanthal/Decarboxymethyl ligstroside aglycone	C17H20O5	15.00	303.1231	303.1238	2.4	OP	[38,48,49]
28	Oleuropein aglycone isomer 5	C19H22O8	15.10	377.1257	377.1242	−3.9	OF, OP	[38,49]
29	Oleuropein aglycone isomer 6	C19H22O8	15.57	377.1256	377.1242	−3.8	OF, OP	[38,49]
30	Ligstroside aglycone isomer 4	C19H22O7	15.65	361.1283	361.1293	2.8	OF, OP	[38]
31	Ligstroside aglycone isomer 5	C19H22O7	17.07	361.1284	361.1293	2.3	OF, OP	[38]
32	Maslinic acid	C30H48O4	25.42	471.3491	471.3480	−2.1	OF, OP	[52]

¹ Retention time; ² Experimental; ³ Theoretical; ⁴ OF: olive fruit; OP: olive paste.