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Table 1 GC–MS spectra of Porphyra tenera volatile oil (PTVO) with tentative identified compounds

From: Chemical characterization and antioxidant potential of volatile oil from an edible seaweed Porphyra tenera (Kjellman, 1897)

No. Compounds SI RT RA (%)
1 n-Hexanal 898 3.55 4.7
2 Dimethyl sulfoxide 891 4.15 3.8
3 2-Hexen-1-ol 911 4.40 2.6
4 4-Heptenal 813 5.18 0.7
5 Benzaldehyde 937 6.28 2.8
6 2 Octenal 642 6.53 2.4
7 1-Octen-3-ol 798 6.63 1.2
8 2,4-Heptadienal 697 6.88 0.5
9 n-Octanal 657 6.96 0.6
10 2,4-Heptadienal 811 7.11 2.1
11 Benzene acetaldehyde 844 7.70 0.8
12 E,E-2,4-Octadien-1-ol 689 8.20 1.0
13 2-Heptanone 534 8.81 3.8
14 2,6-Nonadienal 836 9.44 8.7
15 Piperitone oxide 665 9.53 1.4
16 beta-Cyclocitral 794 10.53 2.2
17 3,5-Octadiene 591 11.08 0.9
18 3-Dodecyne 667 11.23 1.6
19 Alpha-ionone 834 13.41 4.0
20 Neryl acetone 644 13.67 1.9
21 Trans-beta-ionone 794 14.17 20.9
22 Phenol 883 14.49 2.9
23 2(4H)-Benzofuranone 864 14.84 2.7
24 Tetradecanoic acid 818 17.42 3.2
25 Hexadecanoic acid 785 19.47 9.16
26 2-Hexadecen-1-ol 728 20.82 1.9
27 Benzoic acid 347 2.11 2.2
28 Hexanoic acid 422 22.85 2.0
29 9-Octadecenamide 501 23.16 1.9
30 Azetidine 449 24.28 5.6
  1. No. compound number in order of elution, SI library search of purity value of a compound, RT retention time (min), RA relative area