Table 3.
Chemical composition of the volatile organic compounds of potential trichoderma viride strains as analysed in gc-ms.
| S No. | aCompound | bRIexp | cArea % | dDetection | ||||
|---|---|---|---|---|---|---|---|---|
| T. viride 6889 | T. viride 7204 | T. viride 7764 | T. viride 7847 | T. viride 8276 | ||||
| 1 | 2-Methylpropanal | 554 | 0.37 ± 0.12 | 0.19 ± 0.00 | – | 0.24 ± 0.10 | – | NIST, RI |
| 2 | 3-Methyl-butanal | 648 | 1.09 ± 0.39 | – | 0.64 ± 0.15 | – | – | NIST, RI |
| 3 | 2-Pentanone | 682 | – | – | – | 0.73 ± 0.12 | 0.14 ± 0.00 | NIST, RI |
| 4 | 2-Mthyl-butanol | 737 | 1.60 ± 0.21 | 0.36 ± 0.12 | 1.79 ± 0.28 | – | – | NIST, RI |
| 5 | 3-Hexene-1-ol | 855 | tr | 1.02 ± 0.00 | 0.33 ± 0.05 | 2.25 ± 0.31 | 7.29 ± 1.14 | NIST, RI |
| 6 | 2-Heptanone | 891 | – | 0.46 ± 0.09 | tr | 1.78 ± 0.42 | – | NIST, RI |
| 7 | 2-Ethyl-hexanal | 953 | 2.06 ± 0.53 | 1.11 ± 0.20 | 1.72 ± 0.37 | 2.29 ± 0.36 | 6.64 ± 0.88 | NIST, RI |
| 8 | 1-Octen-3-ol | 984 | 3.35 ± 0.19 | 7.42 ± 1.41 | 9.40 ± 1.71 | – | 0.98 ± 0.10 | NIST, RI |
| 9 | Octan-3-one | 986 | 5.27 ± 0.67 | 6.79 ± 0.78 | 13.92 ± 2.65 | tr | tr | NIST, RI |
| 10 | 2-Pentyl-furan | 990 | – | tr | 0.91 ± 0.12 | – | – | NIST, RI |
| 11 | 3-Octanol | 997 | 0.74 ± 0.12 | 11.06 ± 2.26 | 10.57 ± 1.33 | 0.63 ± 0.12 | 0.15 ± 0.00 | NIST, RI |
| 12 | 2-Nonanone | 1094 | – | – | 0.83 ± 0.15 | – | – | NIST, RI |
| 13 | Phenylethyl alcohol | 1120 | – | 0.23 ± 0.00 | 0.72 ± 0.00 | 1.54 ± 0.29 | 0.27 ± 0.12 | NIST, RI |
| 14 | 2-Methyl-1-undecene | 1182 | 1.02 ± 0.16 | tr | – | – | tr | NIST, RI |
| 15 | 2-Heptyl-furan | 1202 | 0.12 ± 0.00 | – | 0.26 ± 0.10 | – | – | NIST, RI |
| 16 | 2-Undecanone | 1289 | – | 3.47 ± 0.98 | 0.39 ± 0.00 | 0.63 ± 0.12 | – | NIST, RI |
| 17 | 2,4-Decadienal | 1318 | tr | 0.60 ± 0.12 | 0.58 ± 0.17 | 2.92 ± 0.11 | 4.82 ± 0.55 | NIST, RI |
| 18 | Dodecane | 1461 | 5.32 ± 0.92 | – | – | 9.38 ± 2.17 | 17.44 ± 3.48 | NIST, RI |
| 19 | 2,4-Dodecadienal | 1515 | – | 0.41 ± 0.12 | tr | 1.18 ± 0.21 | 0.54 ± 0.19 | NIST, RI |
| 20 | 1-Hexadecene | 1598 | – | 0.38 ± 0.00 | tr | – | 0.12 ± 0.00 | NIST, RI |
| 21 | 6-Methyl-bicyclo-octan-7-ol | 1720 | tr | 1.27 ± 0.34 | 5.34 ± 0.96 | – | – | NIST, RI |
| 22 | Hexadecane | – | – | tr | 3.22 ± 0.15 | 1.46 ± 0.58 | NIST, RI | |
| 23 | Hexadecanoic acid-methyl ester | 1925 | 1.18 ± 0.00 | 3.92 ± 0.96 | 4.17 ± 0.82 | – | 0.93 ± 0.25 | NIST, RI |
| 24 | Heptadecanoic acid-methyl ester | 2030 | 0.24 ± .12 | 2.58 ± 0.14 | 1.40 ± 0.23 | 1.51 ± 0.12 | 1.24 ± 0.69 | NIST, RI |
| 25 | 9-Octadecenoic acid-methyl ester | 2105 | – | 1.34 ± 0.13 | 4.98 ± 0.17 | – | – | NIST, RI |
| 26 | Methyl-6- arachidonate | 2208 | – | 1.00 ± 0.19 | 3.46 ± 0.45 | – | – | NIST, RI |
| 27 | Octacosanol | 3110 | 0.67 ± 0.00 | – | 0.18 ± 0.00 | tr | 0.35 ± 0.00 | NIST, RI |
a.Compounds are listed in order of their elution from an HP-5MS column.
b.Retention index (RIexp) on HP-5MS column, experimentally determined using homologous series of C8-C30 alkanes.
c.Relative area % values are expressed as means ± SD.
d.Detection: RI, NIST (matching with the mass library), and mass fragments.
* tr-trace<0.1%.