Investigation of CO₂ Extract of Portulaca oleracea for Antioxidant Activity from Raw Material Cultivated in Kazakhstan

Table 2

Chromatographic analysis of the hexane fraction of Portulaca olеracea CO₂ extract.

No.	Retention time (min)	Compound	Identification probability (%)	Percentage (%)
1	12.7	2, 4-Heptadienal	89	0.96
2	14.4	Nonanal	91	0.22
3	15.8	2, 5-Furandione, 3-(1,1-dimethylethyl)-	88	0.27
4	16.1	Cyclohexanol, 1-methyl-4-(1-methylethyl)-	83	0.54
5	16.3	Octanoic acid	90	0.92
6	16.4	Cyclodecene	73	0.24
7	18.2	Nonanoic acid	87	1.45
8	18.7	Tetradecane	85	0.31
9	19.1	2, 4-Decadienal	87	0.67
10	19.4	Alfa-copaene	93	0.26
11	20.0	Decanoic acid	72	1.44
12	20.6	Caryophyllene	93	0.43
13	21.0	Undecanoic acid	84	0.40
14	21.9	5,9-Undecadien-2-one, 6,10-dimethyl-	85	0.38
15	22.5	Hexadecane	90	0.33
16	22.8	γ-Muurolene	73	0.30
17	23.0	trans-β-Ionone	90	0.28
18	23.2	3-Buten-2-one, 4-(2,2,6-trimethyl-7-oxabicyclo[4.1.0]hept-1-yl)-	74	0.24
19	23.2	Vanillin	75	0.19
20	24.0	Nonanoic acid, 9-oxo-, ethyl ester	85	0.31
21	24.4	Heptadecane	82	0.36
22	25.6	Tridecanoic acid	83	0.28
23	26.0	2(4H)-Benzofuranone, 5, 6, 7, 7a-tetrahydro-4,4,7a-trimethyl-, (R)-	74	0.82
24	26.1	Hexadecane, 2,6,10,14-tetramethyl-	69	0.15
25	26.3	Octadecane	89	0.25
26	26.5	Hexadecanal	82	0.28
27	27.4	3,7,11,15-Tetramethyl-2-hexadecen-1-ol	84	0.45
28	28.3	Nonadecane	89	0.34
29	28.6	2-Pentadecanone, 6, 10, 14-trimethyl-	93	2.87
30	29.9	Benzoic acid, undecyl ester	66	0.30
31	30.3	Hexadecanoic acid, methyl ester	75	0.39
32	30.7	1,4-Naphthalenedione, 2, 3, 6-trimethyl-	71	0.50
33	31.1	5, 9, 13-Pentadecatrien-2-one, 6, 10, 14-trimethyl-, (E,E)-	87	0.53
34	31.2	Benzoic acid, 4-hydroxy-3, 5-dimethoxy-, hydrazide	86	0.35
35	33.9	Phytol	94	11.87
36	34.4	p-Octylacetophenone	68	1.96
37	35.1	Ethyl oleate	91	5.73
38	38.6	Methyl 19-methyl-eicosanoate	68	2.69
39	39.3	4,8,12,16-Tetramethylheptadecan-4-olide	86	1.53
40	41.8	Docosanoic acid, ethyl ester	75	0.97
41	42.6	13-Methylheptacosane	74	1.59
42	49.9	γ-Tocopherol	60	2.56
43	51.0	Vitamin E	93	17.62
44	52.0	Phytol, acetate	84	2.83
45	53.2	Campesterol	91	4.54
46	53.7	Stigmasterol	83	2.86
47	54.9	γ-Sitosterol	91	20.65
48	55.4	Phytol, acetate	85	4.63