Table 2.
Comparative GC-MS metabolic profiling of the methanolic extracts of the experimented Podocarpus species, showing the predicted compound name, molecular formula and their identities.
| RT (min) | Compound | Nature of Compound | Molecular formula | Selected Plant species (Peak area %) |
||||
|---|---|---|---|---|---|---|---|---|
| P. gracilior | P. elongatus | P. macrophyllus | P. neriifolius | |||||
| 1 | 4.09 | Linoleic Acid Chloride | Omega-6 fatty acid | C18H31ClO | 0.96 | – | – | – |
| 2 | 4.16 | 2-(7-Heptadecynyloxy) tetrahydro-2H-pyran | Flavonoid | C22H40O2 | 0.87 | – | – | – |
| 3 | 4.26 | Oleic acid | Omega-9 fatty acid | C18H34O2 | 1.22 | – | – | – |
| 4 | 7.45 | Oxamyl | Carbamate ester | C7H13N3O3S | 1.18 | – | – | – |
| 5 | 7.82 | 2,5,5,8A-tetramethyl −3,5,8,8 A- tetrahydro-2H-chromene |
C13-apocarotenoids or Norisoprenoids | C13H20O | 1.94 | – | – | – |
| 6 | 8.26 | Vitispirane | C13-apocarotenoids or Norisoprenoids | C13H20O | 8.25 | – | 14.63 | 1.99 |
| 7 | 9.39 | ç-Elemene | Sesquiterpenoid | C15H24 | – | 1.98 | 5.19 | 3.88 |
| 8 | 9.60 | Farnesol (3,7,11-trimethyl-2,6,10-dodecatrien-1-ol) | Acyclic sesquiterpene alcohol | C15H26O | 1.46 | – | – | – |
| 9 | 9.61 | α-copaene | Sesquiterpenoid | C15H24 | – | – | 1.91 | – |
| 10 | 10.13 | α-cedrene | Sesquiterpenoid | C15H24 | 3.81 | |||
| 11 | 10.80 | 2-Methyl-4-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2-butenal | Aldehyde | C14H22O | – | 1.14 | – | – |
| 12 | 10.81 | 2,3-Dehydro-4-oxo-α-ionol | Sesquiterpenoid | C13H18O2 | 0.65 | – | – | – |
| 13 | 11.01 | β- Caryophyllene | Bicyclic sesquiterpenoid | C15H24 | 17.10 | 7.26 | 36.41 | 3.66 |
| 14 | 11.71 | Cis-α-Bisabolene | Sesquiterpenoid | C15H24 | 3.21 | – | 6.45 | – |
| 15 | 12.28 | β-Cuvebene or β –Cubebene | Sesquiterpenoid | C15H24 | 9.16 | 1.12 | – | – |
| 16 | 12.58 | α –Selinene | Sesquiterpenoid | C15H24 | – | – | 5.19 | 3.88 |
| 17 | 12.59 | Lepidozene | bicyclogermacrene sesquiterpenoid |
C15H24 | – | 26.52 | – | 3.88 |
| 18 | 12.70 | β-Cadinene | Sesquiterpenoid | C15H24 | 4.22 | – | – | – |
| 19 | 13.03 | α-ylangene | Sesquiterpenoid | C15H24 | 1.62 | 1.51 | 2.12 | – |
| 20 | 13.16 | δ-Amorphene or cadina-1(10),4-diene | Sesquiterpenoid | C15H24 | 3.93 | 3.64 | – | – |
| 21 | 13.31 | Cubebol | Sesquiterpenoid | C15H26O | 3.49 | – | – | – |
| 22 | 14.28 | Spathulenol | Sesquiterpenoid | C15H24O | – | 10.29 | – | – |
| 23 | 14.29 | Caryophylene oxide | sesquiterpenoid alcohol | C15H24O | 0.75 | – | 2.86 | – |
| 24 | 15.37 | α-acorenol | Sesquiterpenoid | C15H26O | 0.63 | 1.79 | – | – |
| 25 | 15.49 | Cedrane-8,13-diol | Sesquiterpenoid | C15H26O2 | 3.53 | – | – | |
| 26 | 15.54 | Longifolene or Junipene | Tricyclic sesquiterpenoid | C15H24 | 1.52 | – | – | – |
| 27 | 15.78 | 2,5-Octadecadiynoic acid, methyl ester | Fatty acid | C19H30O2 | 0.74 | – | 2.94 | – |
| 28 | 15.85 | 2-[4-Methyl-6-(2,6,6-trimethylcyclohex-1-enyl)hexa-1,3,5-trienyl]cyclohex-1-en-1-carboxaldehyde | Aldehyde | C23H32O | 0.75 | – | – | – |
| 29 | 15.89 | 10,12-Pentacosadiynoic acid methyl ester | Fatty acid | C26H44O2 | – | 1.33 | – | – |
| 30 | 15.95 | Methyl 4,7,10,13-hexadecatetraenoate | Fatty Acid | C17H26O2 | 1.66 | – | – | – |
| 31 | 16.43 | Retinal (Vitamin A aldehyde) | Vitamin | C20H28O | 3.18 | – | – | 1.26 |
| 32 | 18.92 | 9-octadecenoic acid (Z) | Fatty Acid | C18H34O2 | – | 3.94 | 3.67 | 2.49 |
| 33 | 18.94 | 12-Methyl-E,E−2,13-octadecadien-1-ol | Fatty alcohol | C19H36O | 2.05 | – | – | – |
| 34 | 19.65 | Vincadifformine | Alkaloid | C21H26N2O2 | – | – | 1.80 | – |
| 35 | 19.66 | 1-Heptatriacotanol | Fatty alcohol | C37H76O | – | 1.33 | – | – |
| 36 | 20.36 | Atis-16-ene, (5á,8à,9á,10à,12à | Diterpenoid | C20H32 | – | – | – | 3.51 |
| 37 | 20.52 | Palmitic acid, methyl ester | Fatty acid | C17H34O2 | – | 3.50 | ||
| 38 | 20.54 | Tetraacetyl-d-xylonic nitrile | Sugar acid | C14H17NO9 | 1.11 | – | – | – |
| 39 | 20.83 | Biformene or Labda-8(20),12,14-triene | Diterpenoid | C20H32 | – | – | – | 7.00 |
| 40 | 20.99 | Desulphosinigrin | Carbohydrate | C10H17NO6S | 2.31 | – | – | – |
| 41 | 21.06 | Melezitose | Carbohydrate | C18H32O16 | 2.01 | – | – | – |
| 42 | 21.15 | 3-O-Methylhexose (3-O-Methyl-d-glucose) | Carbohydrate | C7H14O6 | 4.31 | – | – | – |
| 43 | 21.99 | Kaur-16-ene or α-Podocarpene | Diterpenoid | C20H32 | – | – | 18.85 | 70.95 |
| 44 | 22.09 | 2,3-Dihydroxypropyl palmitate | Fatty acid ester | C19H38O4 | 1.48 | – | – | – |
| 45 | 22.18 | Dodecanoic acid, 2,3-bis(acetyloxy)propyl ester | Fatty acid ester | C19H34O6 | 1.03 | – | – | – |
| 46 | 23.26 | Pentadecanoic acid | Fatty acid | C15H30O2 | 0.61 | – | – | – |
| 47 | 23.30 | cis-Oxiraneundecanoic acid | Fatty acid | C19H36O3 | 1.01 | – | – | – |
| 48 | 23.42 | 3-Oxo-20-methyl-11-à- hydroxyconanine-1,4-diene | Steroid alkaloid | C22H31NO2 | 0.80 | – | – | – |
| 49 | 23.61 | Methyl stearate | Fatty acid | C19H38O | – | 1.70 | – | – |
| 50 | 24.68 | Methyl-9,9,10,10-D4-octadecanoate | Fatty acid | C19H34D4O2 | 0.99 | – | – | – |
| 51 | 26.73 | 9,10 dideutero octadecanoic acid | Fatty acid | C18H34D2O2 | 1.45 | – | – | – |
| 52 | 29.36 | 10-Methoxy-N(b)-à –methylcorynantheol | Alkaloid | C21H29N2O2 | 1.46 | 1.72 | – | – |
| 53 | 34.19 | 2-Monolinolenin 2TMS derivative |
Fatty acid | C27H52O4Si2 | 0.35 | – | – | – |
| 54 | 34.34 | Calcitriol or 1,25-Dihydroxyvitamin D3, TMS derivative | Vitamin | C30H52O3Si | 1.29 | 1.02 | – | 0.83 |
| 55 | 34.58 | Vitamin E, alpha-tochopherol | Vitamin | C29H50O2 | – | – | 3.18 | – |
| 56 | 34.66 | Quercetin 7,3′,4′-trimethyl ether | Flavenoid | C18H16O7 | 0.76 | 3.03 | 1.58 | |
| 57 | 35.48 | 1-Heptatriacotanol | Fatty alcohol | C37H76O | – | 3.71 | – | – |
| 58 | 35.50 | Ergosta-5,22-dien-3-ol, acetate, (3á,22E)- | Steroid | C30H48O2 | 1.05 | – | – | – |