Chemical Composition and Evaluation of the α-Glucosidase Inhibitory and Cytotoxic Properties of Marine Algae Ulva intestinalis, Halimeda macroloba, and Sargassum ilicifolium

Table 7

Chemical composition of Sargassum ilicifolium.

No	Name	Retention time	Area, %	Molecular formula
Phenol
1	Phenol, 3,5-bis(1,1-dimethylethyl)-	15.982	6.54	C14H22O
Ketone
2	2-Pentadecanone, 6,10,14-trimethyl-	19.696	0.85	C18H36O
Aldehyde
3	E-14-Hexadecenal	16.903	1.65	C16H30O
4	Octadecanal	17.937	0.43	C18H36O
Alcohol
5	3,7,11,15-Tetramethyl-2-hexadecen-1-ol	20.067	6.24	C20H40O
6	1-Dodecanol, 3,7,11-trimethyl-	22.337	2.84	C15H32O
Hydrocarbons
7	1-Tetradecene	14.385	0.52	C14H28
8	1-Octadecene	19.161	0.83	C18H36
9	1-Nonadecene	21.206	0.30	C19H38
Fatty acids
10	n-Hexadecanoic acid	20.963	1.20	C16H32O2
Sterols
11	Stigmasta-5,22-dien-3-ol, acetate, (3β)-	30.024	0.83	C31H50O2
12	Cholest-4-en-3-one	31.086	0.87	C27H44O
13	Stigmasta-4,24(28)-dien-3-one, (24E)-	32.357	1.52	C29H46O
Fatty acid methyl/ethyl esters
14	Tridecanoic acid, 12-methyl-, methyl ester	18.427	0.53	C15H30O2
15	Hexadecanoic acid, methyl ester	20.546	5.28	C17H34O2
16	9,12-Octadecadienoic acid, methyl ester	22.181	0.76	C19H34O2
17	9-Octadecenoic acid, methyl ester, (E)-	22.240	3.70	C19H36O2
18	11-Octadecenoic acid, methyl ester, (Z)-	22.290	0.77	C19H36O2
19	Octadecanoic acid, methyl ester	22.473	0.54	C19H38O2
20	Hexadecanoic acid, 2,3-dihydroxypropyl ester	25.319	0.66	C19H38O4
Others
21	Benzenepropanoic acid, 3,5-bis(1,1-dimethylethyl)-4-hydroxy-, methyl ester	20.645	7.03	C18H28O3
22	Hexadecanoic acid, 2-hydroxy-1- (hydroxymethyl)ethyl ester	23 .601	1.17	C19H38O4
23	1,2-Benzenedicarboxylic acid, mono(2-ethylhexyl) ester	25.946	7.69	C16H22O4
24	Squalene	27.992	0.74	C30H50