Table 4.
The volatile constituents in G. frondosa- and Tianzhi-fermented tea substrates
| Retention time (min) | Names of constituents | Content (%) | |
|---|---|---|---|
| G. frondosa | Tianzhi | ||
| 4.60 | Hexanal | 4.74 | 3.03 |
| 5.59 | 1,2-Dimethylbenzene | 2.74 | 3.35 |
| 11.42 | 6-Methylhept-5-en-2-one | 1.23 | 2.68 |
| 13.05 | Nonanal | 1.75 | 1.86 |
| 13.2 | Citronellyl formate | – | 1.73 |
| 13.37 | 3-Octen-2-one | – | 1.33 |
| 13.89 | 2-Octenal | 0.92 | 2.42 |
| 14.06 | Ethyl Octanoate | 0.85 | – |
| 14.43 | 1-Octen-3-ol | 1.47 | 1.3 |
| 14.63 | 2,4-Heptadienal | 0.66 | 0.94 |
| 14.85 | 2-Furanmethanol,5-ethenyltetrahydro-a,a,5-trimethyl-, (2R,5R)-rel- | 2.85 | – |
| 15.21 | 4-Ethylcyclohexanol | 1.24 | 1.48 |
| 15.99 | cis-6-Nonenal | 1.11 | 2.71 |
| 16.14 | 1,3-Butanediol | 0.7 | – |
| 16.39 | 1-Undecene,8-methyl | – | 0.94 |
| 16.5 | Isobutyricacid | 2.05 | – |
| 16.56 | 3,5-Octadien-2-one, (E,E) | – | 1.13 |
| 16.79 | Ttrans-2, cis-6-Nonadienal | – | 2.01 |
| 16.96 | 1,2-Propanediol | 1.86 | – |
| 17.09 | 3,4-Dimethylcyclohexanol | 2.47 | 0.89 |
| 17.16 | 1-Ethyl-1H-Pyrrole-2-carboxaldehyde | – | 1.49 |
| 17.26 | Valerolactone | 2.05 | – |
| 17.34 | 2,6,6-Trimethyl-1-cyclohexene-1-carboxaldehyde | 1.76 | 0.94 |
| 17.56 | Ethyl caprate | 7.99 | 3.38 |
| 17.74 | 4-(Benzoyloxy)-2H-Pyran-3-one | 1.62 | 0.95 |
| 17.91 | Allyl caproate | – | 2.1 |
| 18.00 | 3-Methylbutyric acid | 4.15 | – |
| 18.37 | 2-Cyclohexen-1-one | – | 1.38 |
| 18.73 | 1,2,4a,5,6,8a-Hexahydro-4,7-dimethyl-1- (1-methylethyl) naphthalene, | – | 1.00 |
| 18.84 | 2, 3-Dimethylmaleic anhydride | – | 0.99 |
| 18.97 | Tricyclo (4.3.2.0(1,4))undeca-2,4(5), 8,10-tetranen-7-one | – | 1.16 |
| 19.12 | Oxime-methoxy-phenyl | 2.12 | – |
| 19.19 | Naphthalene,1,2,3,4,4a5,6,8a-octahydro-7-methyl-4-methylene-1-(1-methylethyl) | – | 6.84 |
| 19.25 | 2,2,6-Trimethyl-6-vinyltetranhydro-2H-pyran-3-ol | 5.96 | – |
| 19.42 | Methyl salicylate | 0.96 | – |
| 19.82 | 2,4-Decadienal | – | 0.36 |
| 19.9 | Phenylethyl acetate | 1.99 | – |
| 20.14 | Ethyl dodecanoate | 3.71 | – |
| 20.16 | Hexanoic acid | – | 4.49 |
| 20.82 | 4-Methyl-2(5H)-furanone | – | 0.4 |
| 20.92 | 2,6-Di-tert-butyl-4-methylphenol | – | 0.19 |
| 20.31 | 2,10-Dimethyl-5,9-undecadien-2-one, Geranyl acetone | 1.55 | 3.9 |
| 20.6 | Benzyl alcohol | 0.38 | – |
| 20.7 | N-Ethylsuccinimide | 3.46 | 3.48 |
| 20.93 | Bornadiene | 0.24 | – |
| 21.03 | Phenethyl alcohol | 2.68 | 1.03 |
| 21.39 | 4-(2,6,6-Trimethyl-1-cyclohexen-1-yl)-3-buten-2-one | 1.43 | 1.21 |
| 21.66 | Benzothiazole | 1.35 | 0.7 |
| 22.2 | 1-Methoxymethyl-4-methoxy-1-naphthol | – | 0.27 |
–, means that its value has not been detected yet