Table 4.
Tests of the capability of the AromaScan A32S e-nose to identify 24 wood decay fungi in pure agar culture using conductive polymer analysis with recognition files constructed from a fungus-specific reference library.
| Decay fungi unknowns | N= | Correctly identified1 | Incorrectly identified2 | Indeterminate, not identified3 | Mean % aroma class match4 |
|---|---|---|---|---|---|
| Amylostereum areolatum | 2 | 2 | 0 | 0 | 73.8 |
| Armillaria gallica | 1 | 1 | 0 | 0 | 84.5 |
| Armillaria mellea | 2 | 2 | 0 | 0 | 91.9 |
| Armillaria ostoyae | 1 | 1 | 0 | 0 | 66.9 |
| Armillaria tabescens | 1 | 1 | 0 | 0 | 75.8 |
| Cerrena unicolor | 2 | 2 | 0 | 0 | 73.4 |
| Daedalea quercina | 1 | 1 | 0 | 0 | 71.5 |
| Daldinia concentrica | 4 | 4 | 0 | 0 | 85.3 |
| Fomitopsis officinalis | 1 | 1 | 0 | 0 | 67.1 |
| Ganoderma lucidum | 4 | 4 | 0 | 0 | 91.0 |
| Gloeophyllum sepiarium | 1 | 1 | 0 | 0 | 82.4 |
| Hericium erinaceus | 3 | 3 | 0 | 0 | 73.1 |
| Heterobasidion annosum | 1 | 1 | 0 | 0 | 77.9 |
| Inonotus dryadeus | 1 | 0 | 0 | 1 | Unk |
| Laetiporus sulphureus | 1 | 1 | 0 | 0 | 75.0 |
| Oxyporus latemarginatus | 5 | 5 | 0 | 0 | 76.2 |
| Phanerochaete gigantea | 1 | 1 | 0 | 0 | 100.0 |
| Phellinus pini | 2 | 0 | 0 | 2 | Unk |
| Pleurotus ostreatus | 1 | 1 | 0 | 0 | 64.5 |
| Postia caesia | 1 | 1 | 0 | 0 | 73.4 |
| Spongipellis pachyodon | 2 | 2 | 0 | 0 | 86.1 |
| Stereum hirsutum | 2 | 2 | 0 | 0 | 63.0 |
| Wolfiporia cocos | 1 | 1 | 0 | 0 | 66.0 |
| Xylaria polymorpha | 3 | 3 | 0 | 0 | 69.5 |
| Totals | 44 | 41 (93.2%) | 0 | 3 (6.8%) |
1
Number of unknown wood decay fungi samples correctly identified in pure 4.5% MA cultures.
2
Number of unknown wood decay fungi samples identified to an incorrect aroma class.
3
Number of unknown wood decay fungi samples not identified to an aroma class due to <70% ownership in any one aroma class.
4
Mean percentage match of unknown wood decay fungi samples to the correct aroma class identity. Unk = unknown, i.e., sampled was not identified.