Table 5.
Sterol profiles determined by GC-MS of C. tropicalis isolates
| Sterol typea | % Total sterols (mean ± SD)b for isolate: |
||||||
|---|---|---|---|---|---|---|---|
| DSY140 | JEY162 | JEY439 | JEY442 | JEY445 | JEY311 | JEY434 | |
| m/z 480* | 9.1 ± 5.4 | ||||||
| m/z 482* | 5.4 ± 1.0 | ||||||
| Ergosta-dienol | 10.4 ± 2.1 | ||||||
| Zymosterol | 1.9 ± 0.7 | ||||||
| Ergosterol | 73.5 ± 6.1 | 84.1 ± 7.0 | |||||
| Ergosta-5,8-dienol | 4.4 ± 0.7 | ||||||
| Ergosta trienol | 2.5 ± 0.11 | ||||||
| Ergosta-7,22-dienol | 55.8 ± 2.8 | 1.1 ± 0.6 | |||||
| Fecosterol | 1.1 ± 0.6 | 7.2 ± 0.7 | |||||
| 14α-Methyl fecosterol | 64.1 ± 10.8 | 76.4 ± 2.7 | 65.3 ± 5.9 | 9.1 ± 2.1 | |||
| 4,14-Dimethyl zymosterol | 2.5 ± 0.7 | 1.9 ± 0.2 | 1.6 ± 0.1 | 2.7 ± 0.7 | |||
| Ergosta-8-enol | 5.2 ± 0.3 | ||||||
| Ergosta-5,7-dienol | 1.3 ± 1.2 | 7.5 ± 2.6 | |||||
| Episterol | 1.7 ± 0.6 | 14.3 ± 1.2 | 1.4 ± 1.2 | ||||
| Ergosta-7-enol | 6.4 ± 1.4 | ||||||
| m/z 482(2)* | 1.3 ± 0.3 | ||||||
| 14α-Methyl-ergosta-8,24(28)-dien-3α,6β-diol | 52.8 ± 5.8 | ||||||
| Obtusifoliol | 10.4 ± 3.5 | 18.6 ± 3.8 | 12.4 ± 1.4 | 15.9 ± 1.1 | 1.5 ± 1.4 | 13.5 ± 4.4 | |
| Eburicol | 3.7 ± 1.9 | 15.4 ± 7.0 | 9.6 ± 1.4 | 18.2 ± 6.1 | 6.0 ± 2.7 | ||
a
*, Sterol products with unknown structures.
b
The sterol composition (i.e., the percentage of total sterols with the standard deviations of three replicate strains grown in YPD) is given. Minor sterols (constituting <1%) were not included in the table.