Table 4.

Concentration of individual phenolic compounds in CE and HVED olive leaves extracts (OLEs) (ng/mL).

ID	Sample	Apigenin	Diosmetin	Hydroxytyrosol	Luteolin	Oleanolic Acid	Oleuropein	Quercentin	Extraction Type
1	3 OL0	156	124	9.17	2356.6	4.45	50.4	N/A	CE
2	9 OL0	172	121	11.6	71.5	2.12	56.2	0.054
3	3 OL25	125	112	494	550	0.66	3959	0.140
4	9 OL25	144	132	125	580	0.79	825	0.124
5	3 OL50	31.9	14.5	4120	154	3918	23485	247
6	9 OL50	193	154	13.0	80.8	8.37	108	3.01
7	OLN1	58.6	47.0	3016	353	3386	17646	9.07	HVED
8	OLN2	157	118	86.6	138	8.84	99.3	N/A
9	OLN3	109	101	97.5	96.3	3.65	76.1	0.048
10	OLN4	127	98.1	96.5	122	N/A	74.2	0.042
11	OLN5	116	119	80.4	361	1.83	163	0.109
12	OLN6	134	127	67.5	424	2.92	165	0.115
13	OLN7	38.9	30.0	3090	255	2803	17311	7.17
14	OLN8	44.3	33.0	3294	265	2705	18413	9.0
15	OLN9	149	159	108	375	8.57	168	0.179
16	OLN10	111	94.2	192	252	3.76	178	0.103
17	OLN11	106	106	97.5	403	2.00	424	0.121
18	OLN12	56.8	49.2	3426	386	2851	17388	8.54
19	OLA1	53.6	59.9	2964	357	2004	16103	5.27
20	OLA2	198	76.6	10.1	29.8	5.74	57.4	0.043
21	OLA3	124	130	112	215	2.41	97.9	0.032
22	OLA4	113	100	64.0	113	N/A	52.5	0.021
23	OLA5	110	123	128	487	N/A	247	0.146
24	OLA6	115	122	145	457	N/A	315	0.218
25	OLA7	60.1	60.6	3660	431	1844	17127	6.43
26	OLA8	48.2	41.5	3682	334	2043	17895	15.6
27	OLA9	111	116	149	480	6.22	465	0.189
28	OLA10	94.2	85.3	139	166	N/A	102	0.061
29	OLA11	51.4	51.0	2967	372	2193	16695	5.79
30	OLA12	142	141	77.2	459	7.51	166	0.191

OL = olive leaf, N = nitrogen, A = argon. For HVED, numbers 1–12 are the order of conducted treatment. For CE treatments, 3 and 9 are referred to treatment time (min) while 0, 25, and 50 stands for concentration of an ethanol solvent (%).