Table 1. The different identified bioactive compounds by using GC-MS screening of G. oblongata marine extract.

Compound Name	RT	Prob.	Area	Area %	Compounds nature	The reported biological activity
2-Myristynoyl pantetheine	1.33	15.23	848715.00	0.24	Vitamins	Antioxidant and anti-inflammatory [78]
Oleic Acid	1.64	5.37	78500.64	0.02	Fatty acids	Anti-inflammatory [79]
Heptanoic acid, docosyl ester	3.37	3.52	283357.70	0.08	Fatty acids	Antioxidant anticancer and anti-inflammatory [80]
5,8,11,14-Eicosatetraynoic acid	3.45	5.00	1055770.75	0.30	Fatty acids	Antioxidant anticancer and anti-inflammatory [80]
Dodecane, 5,8-diethyl-	3.65	10.03	39172.25	0.01	Fatty acids	Antioxidant anticancer and anti-inflammatory [80]
Oleic acid, 3-(octadecyloxy) propyl ester	3.71	6.67	182597.13	0.05	Monounsaturated omega-9 Fatty acids	Antioxidant anticancer and anti-inflammatory [80]
Ethyl iso-allocholate	4.27	6.26	371088.37	0.10	Steroids	Antioxidant and anti-inflammatory [81]
Lochneridine	5.65	11.80	129134.93	0.04	Alkaloids	Anti-inflammatory and antioxidants [81]
Lycopene	5.65	9.51	129134.93	0.04	Carotenoids and natural dyes	Anti-inflammatory, antioxidant and anticancer [68]
N-2,4-Dnp-L-arginine	6.90	11.73	730119.87	0.21	Amino acids	Antioxidant anticancer and anti-inflammatory [80]
Akuammilan-17-oic acid, methyl ester	6.90	4.63	730119.87	0.21	Fatty acids	Antioxidant anticancer and anti-inflammatory [80]
Benzoyl-L-arginine amide	7.00	6.52	336407.26	0.09	Amino acids	Antioxidant anticancer and anti-inflammatory [80]
Dodecane, 5,8-diethyl-	7.38	8.24	207625.46	0.06	Fatty acids	Antioxidant anticancer and anti-inflammatory [80]
Dodecanoic acid, tetradecyl ester	7.38	3.75	207625.46	0.06	Fatty acids	Antioxidant anticancer and anti-inflammatory [80]
Octadecane, 3-ethyl-5-(2-ethylbutyl)-	7.91	7.71	1400102.23	0.39	Fatty acids	Antioxidant anticancer and anti-inflammatory [80]
Heptadecane, 9-hexyl-	8.01	23.53	450147.45	0.13	Fatty acids	Antioxidant anticancer and anti-inflammatory [80]
Glucobrassicin	8.26	8.67	97248.99	0.03	glucoinalted	glucosinolates can stimulate the body's own natural antioxidant systems, technically called Phase II enzymes. As such, glucosinolates act as indirect antioxidants triggering the liver to produce detoxifying enzymes that block free-radical attack on DNA. Also severy studies indicate their activity as anti-inflammatory
Aldosterone	8.31	8.60	194877.76	0.05	Hormones	Coproducing Adrenal Adenoma in Primary Aldosteronism [82]
Hexadecanoic acid, 1-(hydroxymethyl)-1,2-ethanediyl ester	9.30	11.46	684566.51	0.19	Fatty acids	Antioxidant anticancer and anti-inflammatory [80]
à-D-Xylofuranose, cyclic 1,2:3,5-bis(butylboronate)	10.45	15.55	820042.46	0.23	Carbohydrates	Anti-inflammatory, antioxidant and anticancer [68]
Ethyl 9-hexadecenoate	10.95	5.90	3196905.07	0.90	Fatty acids	Antioxidant anticancer and anti-inflammatory [80]
Androst-5,7-dien-3-ol-17-one	17.91	6.31	217424.95	0.06	Hormones	Antioxidants [80]
Eicosanebioic acid, dimethyl ester	18.32	7.24	490162.97	0.14	Fatty acids	Antioxidant anticancer and anti-inflammatory [80]
Phorbol	19.73	20.24	349250.47	0.10	Diterpene	Anti-inflammatory, antioxidant and anticancer
DL-Cystine	20.09	6.86	55387.63	0.02	Amino acids	Antioxidant anticancer and anti-inflammatory [80]
5,8,11,14-Eicosatetraynoic acid	27.25	8.97	531005.71	0.15	Fatty acids	Antioxidant anticancer and anti-inflammatory [80]
Xanthumin	27.59	5.67	244505.99	0.08	Carotenoids and natural dyes	Anti-inflammatory, antioxidant and anticancer [68]
Astaxanthin	28.51	10.05		0.05	Carotenoids and natural dyes	Anti-inflammatory, antioxidant and anticancer [68]
Benzoic acid, 4-methyl-, [4-(methoxycarbonyl)phenyl]methyl ester	33.78	7.69		0.26	Phenolic derivatives	Anti-inflammatory, antioxidant and anticancer
11-Heneicosanone	35.09	6.26		0.37	Fatty acids	Antioxidant anticancer and anti-inflammatory [80]
á-Hydroxyquebrachamine	35.23	10.34	332563.89	0.09	Alkaloids	Anti-inflammatory, antioxidant and anticancer
l-Glutamic acid, monobenzyl ester	35.28	10.94		0.07	Amino acids	Antioxidant anticancer and anti-inflammatory [80]
Cholestan-3-one, 4,4-dimethyl-, cyclic 1,2-ethanediyl acetal, (5à)-	35.53	16.59	422479.71	0.12	saturated tetra cyclictriterpene	Antioxidant anticancer and anti-inflammatory [80]
Canthaxanthin	36.25	5.26		0.17	Carotenoids	Anti-inflammatory, antioxidant and anticancer [68]
1,4,7-Androstatrien-3,17-dione	36.50	5.58		0.02	Hormones	Anti-inflammatory, antioxidant [68]
Folic Acid	36.90	9.88		0.16	Vitamins	Antioxidant and anti-inflammatory [78]
Stearic acid, 3-(octadecyloxy)propyl ester	38.48	6.26		0.17	Amino acids	Antioxidants and anti-inflammatory [83]
Ethyl iso-allocholate	1.52	5.48	116195.34	0.03	Steroids	Antioxidants and anti-inflammatory [83]
Spiculesporic acid	0.33	7.58	29624.78	0.01	γ-butenolide	Antioxidants and antimicrobial [84]
Retinoic acid, methyl ester	0.82	5.39	1621522	0.44	Vitamins	Antioxidant and anti-inflammatory [78]
5,8,11,14-Eicosatetraynoic acid	3.98	5.82	83212.1	0.02	Fatty acids	Antioxidant anticancer and anti-inflammatory [80]
.psi.,.psi.-Carotene, 1,1′,2,2′-tetrahydro-1,1′-dimethoxy-	6.36	10.52	45278.33	0.01	Carotenoids and natural dyes	Antioxidant anticancer and anti-inflammatory [68]
Oleic Acid	11.1	5.25	1235479.1	0.33	Fatty acids	Antioxidant anticancer and anti-inflammatory [80]
Glucobrassicin	13.77	7.55	84398.25	0.02	glucosinolate	Antioxidants, anti-inflammatory [85]
5,8,11,14-Eicosatetraynoic acid	11.96	17.64	554245.64	0.15	Fatty acids	Antioxidant anticancer and anti-inflammatory [80]
Gibberellic acid	11.96	10.69	554245.64	0.15	Diterpene	Anti-inflammatory, antioxidant and anticancer [80]