Olive Mill Waste Extracts: Polyphenols Content, Antioxidant, and Antimicrobial Activities

Table 3

Major phenolic compounds identified in OWWE.

Compounds	[M-H]^−	Main fragments	Areas		References
	()	ESI-MS	P	M
Phenolic alcohols
Tyrosol	137		ID	ID	[3, 14, 27, 28]
Hydroxytyrosol	153		ID	ID	[3, 18, 27–29]
Phenolic acids
Vanillic acid	167		NI	ID	[18, 24]
Sinapic acid	223		ID	NI	[22, 23]
Syringic acid	197		ID	ID	[3, 22, 23, 30]
Caffeoylquinic acid	353	191	ID	NI	[24]
3,4,5 Trimethoxybenzoic acid	211		NI	ID	[30]
Vanillin	151		NI	ID	[23, 24, 27]
Secoiridoids and derivatives
3,4-DHPEA-EDA	319	227, 183	ID	NI	[28]
ME 3,4 DHPEA-EA	409		ID	NI	[5]
Oleuropein derivatives	365	214, 307	NI	ID	[5]
Ligstroside	523	335, 259	NI	ID	[20, 23]
p-DHPA-EA	361		ID	NI	[28]
Ligstroside derivatives	337	155	ID	NI	[20]
Ligstroside derivatives	393	257, 137	ID	NI	[20]
Elenolic acid	241		NI	ID	[15]
3,4-DHPEA-AC	195		ID	NI	[15]
Hydroxytyrosol glucoside	315	150	ID	ID	[17]
Oleoside	389	209	ID	NI	[17]
Verbascoside	623	526, 277	ID	ID	[14, 18, 24, 28]
Flavonoids
Apigenin-7-rutinoside	577		NI	ID	[22, 23]
Apigenin-7-glucoside	477		NI	ID	[22, 23]
Luteolin	285		ID	ID	[20, 22, 23, 28]
Luteolin-7-glucoside	447		ID	ID	[18, 23, 24, 28]
Luteolin-7-rutinoside	593		NI	ID	[22–24]
Nüzhenide	685		ID	NI	[22, 23]
Rutin	609		ID	ID	[18, 23, 24]
Lignans
1 Acetoxypinoresinol	415		ID	ID	[22]
Pinoresinol	357		NI	ID	[22]

Masse/charge, in the negative mode.
ID: identified; NI: not identified.
P: plain/M: mountain.
3,4-DHPEA-EA: oleuropein aglycon, p-DHPA-EA: ligstroside aglycon, 3,4-DHPEA-EDA: oleuropein aglycon isomer in aldehyde form, ME 3,4 DHPEA-EA: oleuropein aglycon in methyl form, and 3,4-DHPEA-AC: hydroxytyrosol acetate.