Table I. Chemical composition of trichomes from Stevia
No.aCompoundsRTbRIcFormulaRAd
min%
1α-Pinene9.07922C10H160.13
2(+)-Sabinene9.74972C10H160.15
3β-Pinene9.84979C10H161.10
4β-Linalool11.821,126C10H18O0.17
5l-α-Terpineol13.491,186C10H18O0.06
6β-Elemene16.821,389C15H241.84
7Caryophyllene17.371,424C15H242.15
8α-Bergamotene17.451,432C15H240.94
9α-Humulene17.891,452C15H241.18
10Germacrene D18.291,484C15H241.10
11β-Selinene18.401,489C15H240.29
12Elixene18.521,492C15H241.27
13γ-Cadinene18.741,513C15H240.24
14δ-Cadinene18.821,524C15H240.17
15(±)-trans-Nerolidol19.271,561C15H26O0.93
16Farnesol19.471,620C15H26O0.17
17Germacrene d-4-ol19.691,660C15H26O0.56
18α-epi-Cadinol20.581,638C15H26O0.27
19α-Cadinol20.791,652C15H26O0.28
20Isoaromadendrene epoxide21.081,579C15H24O0.40
21Ledene oxide-(II)22.181,683C15H24O0.09
22[2-(4-Methoxy-phenyl)-[1,3]dioxolan-2-yl]-acetic acid23.461,930C12H14O50.15
23Manoyl oxide25.321,988C20H34O1.07
24n-Octadecanol25.952,053C18H38O2.39
25Ethanol, 2-[2-[4-(1,1,3,3-tetramethylbutyl)phenoxy]ethoxy]-26.932,126C18H30O30.28
26Stearyl acetate27.302,160C20H40O20.33
273-Oxomanoyl oxide27.902,219C20H32O22.73
28(+)-Agathadiol28.802,357C19H30O24.80
29(+)-Copaiferic acid28.962,369C20H32O24.62
304,8,13-Duvatriene-1,3-Diol29.282,400C21H28O20.72
314-(3-Hydroxy-3-methylpentyl)-3,4a,8,8-tetramethyldecahydro-1-naphthalenol29.572,415C20H34O21.30
32Androstan-17-one, 3-methoxy-16,16-dimethyl-, (3β,5α)-29.862,418C22H36O21.90
33Labda-8(20),13-dien-15-oic acid, 19-hydroxy-, methyl ester, (E)-30.452,429C21H32O329.64
34Pregnane-18,20-diol, (5α)-31.092,449C21H36O25.63
35Allopregnane-3α,20α-diol31.472,475C21H36O212.20
3617-α-Hydroxypregnenolone31.572,480C20H32O29.97
372-[5-(2,2-Dimethyl-6-methylene-cyclohexyl)-3-methyl-pent-2-enyl]-[1,4]benzoquinone31.842,489C21H28O22.91
38Isophthalic acid, 3,7-dimethyloct-6-enyl propyl ester31.962,492C21H30O43.30
393-Ethyl-5-(2'-ethylbutyl)octadecane32.132,599C26H540.76
40Allopregnane-7α,11α-diol-3,20-dione32.362,613C21H32O40.39
41Ethanol, 2-[2-[2-[2-[p-(1,1,3,3-tetramethylbutyl)phenoxy]ethoxy]ethoxy]ethoxy]-32.642,676C22H38O0.97
42n-Heptacosane33.062,700C27H560.45
  • a Compound listed in order of elution in an HP-5MS Ultra Inert (UI) column.

  • b Retention time.

  • c Retention indices calculated against C7-C30 n-alkanes on the HP-5MS UI column.

  • d Relative amount. Ratio expressed against the sum of all peaks.