Table 3 Chemical constituents of the algal biomass and extracts.
Biomass proximate composition | Arthrospira platensis | Chlorella vulgaris | ||
|---|---|---|---|---|
Protein | 56.4 ± 3.3% | 43.6 ± 2.4% | ||
Lipids | 6.6 ± 0.6% | 20.19 ± 1.2% | ||
Carbohydrates | 26.2 ± 0.98% | 23.8 ± 0.94% | ||
GC–MS profiling of the algal extract | Molecular formula | Retention time, Min | Peak Area % | |
|---|---|---|---|---|
Arthrospira platensis | Chlorella vulgaris | |||
Esters | ||||
1,2-Benzenedicarboxylic acid, bis(2-methylpropyl) ester | C16H22O4 | 35.1 | 10.77 | 1.29 |
Pentadecanoic acid, 14-methyl-, methyl ester | C17H34O2 | 35.6 | – | 0.82 |
1,2-Benzenedicarboxylic acid, diisooctyl ester (Isooctyl phthalate) | C24H38O4 | 45.6 | 2.15 | 14.17 |
7-Hexadecenoic acid, methyl ester, (Z)- | C17H32O2 | 35.9 | – | 0.82 |
Hexadecanoic acid, methyl ester (Methyl palmitate) | C17H34O2 | 37 | – | 13.5 |
11-Octadecenoic acid, methyl ester | C19H36O2 | 38.8 | – | 0.45 |
Octadecanoic acid, 1-[(tetradecyloxy)carbonyl]pentadecyl ester | C48H94O4 | 25.1 | 2.15 | 22.3 |
Pentadecanoic acid, 14-methyl-, methyl ester | C17H34O2 | 35.3 | 6.46 | – |
Ethaneperoxoic acid, 1-cyano-1-[2-(2-phenyl-1,3-dioxolan-2-yl)ethyl]pentyl ester | C19H25NO5 | 35.7 | 7.32 | – |
1,2-Benzenedicarboxylic acid, diisooctyl ester | C24H38O4 | 39.1 | 2.15 | – |
Total | 31.00 | 53.35 | ||
Fatty acid: Pentanoic acid, 4-methyl- (Isocaproic Acid) | C6H12O2 | 26 | – | 15.42 |
Fatty Alcohol: 3-Methyl-2-(3-methylpentyl)-3-buten-1-ol | C5H10O | 27.5 | 1.72 | 6.4 |
Total | 1.72 | 21.82 | ||
Hydrocarbon | ||||
Eicosane | C20H42 | 32.5 | 1.29 | – |
4-Dodecene, (E)- | C12H24 | 26.1 | – | 17.32 |
Pentadecane | C15H32 | 33.8 | – | 6.29 |
Pentadecane, 7-methyl- | C16H34 | 30.8 | 18.96 | 5.1 |
Total | 20.25 | 28.71 | ||
Ketone | ||||
Propiophenone, 2'-(trimethylsiloxy)- | C12O18O2Si | 21 | 1.72 | – |
1,4-Benzenediol, 2,6-bis(1,1-dimethylethyl)- | C14H22O2 | 18.2 | 13.94 | – |
Acetophenone, 2-chloro- | C8H7ClO | 32 | – | 2.54 |
7,9-Di-tert-butyl-1-oxaspiro(4,5)deca-6,9-diene-2,8-dione | C17H24O3 | 33.4 | 4.3 | 3.4 |
Total | 19.96 | 5.94 | ||
Steroids: Cholesterol | C27H46O | 51.8 | 4.64 | – |
Terpenes | ||||
3,7,11,15-Tetramethyl-2-hexadecen-1-ol | C20H40O | 34.7 | 10.34 | 4.72 |
Phytol | C20H40O | 38.6 | 3.44 | 1.2 |
3',8,8'-Trimethoxy-3-piperidyl-2,2'-binaphthalene-1,1',4,4'-tetrone | C28H25NO7 | 46.7 | – | – |
Squalene | C30H50 | 38.8 | 6.46 | – |
Total | 20.24 | 5.92 | ||