Table 2 Bioactive compounds obtain from P. nitida through GC–MS analysis with their molecular formula, compound class, retention time, percentage (%) of area and retention index

3-Hydroxy-5-methoxytoluene (C₈H₁₀O₂)

Phenol

1342

1,4-BENZOQUINONE (C₆H₄O₂)

Quinone

143

3-methoxy-5-pentyl-phenol

(C₁₂H₁₈O₂)

Phenolics

–

Furan-2(5H)-one (C₄H₄O₂)

Heterocyclic compound

915

2,3,5-trimethylbenzene-1,4-diol (C₉H₁₂O₂)

Phenols

–

[4-(hydroxymethyl) phenyl] methanol (C₈H₁₀O₂)

Alcohol

–

Anethofuran (C₁₀H₁₆O)

Benzofurans

1178

11, 14-icosadienoic acid (C₂₀H₃₆O₂)

Fatty acid

–

(5E,9E)-hexacosa-5,9-dienoic acid (C₂₆H₄₈O₂)

Fatty acid

–

4-Pentyl-5-propyl-2,2-bis(trifluoromethyl)-1,3-dioxolane (C₁₃H₂₀F₆O₂)

Fluorinated substances

–

2-trimethylsiloxy-6-hexadecenoic acid (C₂₀H₄₀O₃Si)

Fatty acid

–

1-(2,4,6-trihydroxyphenyl) propan-1-one (C₉H₁₀O₄)

Ketones

–

Non-8-ynoic acid

(C₉H₁₄O₂)

Fatty acids

–

Undec-10-ynoic acid (C₁₁H₁₈O₂)

Fatty acids

–

Ethylformic acid (C₃H₆O₂)

Fatty acids

745

Methanecarboxamide (C₂H₅NO)

Fatty acids

1763

Tetrahydrobenzene (C₆H₁₀)

Hydrocarbons, cyclic

674

4-Methyl-5,7-dihydroxycoumarin (C₁₀H₈O₄)

Pyrans

2451

Benzenecarboxylic acid (C₇H₆O₂)

Carboxylic acid

2380

1,3-Benzenedicarboxaldehyde, 2-hydroxy-5-methyl- (C₉H₈O₃)

Phenols

–

Chloratranorin (C₁₉H₁₇ClO₈)

Phenols

–

(Z)-Octadec-9-enoic acid (C₁₈H₃₄O₂)

Fatty acid

–

7,11,15-trimethyl-3-methylidenehexadec-1-ene (C₂₀H₃₈)

Terpene

–

2-Tetradecyloxirane (C₁₆H₃₂O)

Alkanes

1708

2-Hexadecen-1-ol, 3,7,11,15-tetramethyl- (C₂₀H₄₀O)

Terpene

–

(Z)-7-Hexadecenal (C₁₆H₃₀O)

Aliphatic aldehyde

2144

1,10-hexadecanediol (C₁₆H₃₄O₂)

Fatty alcohols

–