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Table 5 Phyto-constituents identified in three essential oils of Piper retrofractum Vahl., Alpinia galanga L., and Cyperus rotundus L

From: Antioxidant capacities and total phenolic contents of 20 polyherbal remedies used as tonics by folk healers in Phatthalung and Songkhla provinces, Thailand

Medicinal plants Yield RT Compound names Match Factor Formula MW %Peak area
Alpinia galanga L. 0.43 20.72 β-Bisabolene 95.7 C15H24 204 14.0
18.91 cis-α-Bergamotene 96.6 C15H24 204 10.0
21.06 β-Sesquiphellandrene 94.0 C15H24 204 9.7
8.08 1,8-Cineole 97.3 C10H18O 154 6.0
16.55 Chavicol, acetate 98.8 C11H12O2 176 4.3
Cyperus rotundus L. 1.02 21.31 4-Isopropyl-1-methoxy-1,6-dimethyl- −1,2,3,4-tetrahydronaphthalene 90.3 C15H22 202 11.7
17.52 Copaene 95.2 C15H24 204 5.0
16.81 α-Cubebene 94.5 C15H24 204 4.7
21.69 β-Calacorene 89.9 C15H20 200 4.5
21.61 11-hydroxy-2,3,4,11-tetrahydro-6H-pyrimido[2,1-b]quinazolin-6-one 71.5 C11H11N3O2 217 3.9
Piper retrofractum Vahl. 0.87 18.59 Caryophyllene 92.1 C15H24 204 9.4
20.52 Pentadecane 96.7 C15H32 212 7.4
19.42 1,4,7,-Cycloundecatriene, 1,5,9,9-tetramethyl-, Z,Z,Z- 95.0 C15H24 204 6.8
24.78 8-Heptadecene 96.0 C17H34 238 6.8
25.06 Heptadecane 96.6 C17H36 240 6.1