Assessment of Antioxidant Activity and Neuroprotective Capacity on PC12 Cell Line of Frankenia thymifolia and Related Phenolic LC-MS/MS Identification

Table 2

Phenolic compounds detected in ethyl acetate fraction by HPLC-DAD-ESI-MS from aerial parts and roots of F. thymifolia in negative mode.

Peak number	RT (mn)	(nm)	[M − H]^−	Fragments	Organ	Tentative Identification
1	2.3	275	169	125	R	Gallic acid
2	3	310	153	123	AP	Hydroxytyrosol
3	3.9	280/310	137	93	AP	Hydroxybenzoic p-acid
4	3.9	280	609	483-441-423-305	R	Prodelphinidin B-4
5	4.2	280	635	465	R	Trigalloyl hexoside
6	4.5	280	333	289-265	AP	Posthumulone
7	4.5	280	449	287-431	R	Luteolin 7-O-glucoside
8	5.3	260/360	463	301, 178, 151	AP	Hyperoside
9	5.5	260/360	357	329	AP	Pinoresinol
10	5.5	290/320	497	344-402-449-482	R	Unknown ellagitannin
11	5.8	270/360	447	285	AP	Kaempferol 3-O-glucoside
12	6.7	290/320	312	135-178	AP	Feruloyl glycoside
13	6.7	285/320	655	378-484-543-587-619	R	ND
14	7.1	255/360	423	343-80	AP/R	Flavonoid sulfate
15	7.3	260/370	449	403-311-170	AP	Eriodictyol hexoside