Table 3.
Average extraction efficiency of the sticks that were used in the sorption isotherm and fungal degradation experiments.
| Tree ID | Stick/milled | Heptane | DCM | EtOH | H2O |
|---|---|---|---|---|---|
| S1 | TOT-s/TOT-m | 0.4 | 0.3 | 0.4 | n.a. |
| PHO-s/TOT-m | 0.5 | 0.5 | − | − | |
| PHI-s/PHI-m | − | − | 0.4 | 0.9 | |
| S2 | TOT-s/TOT-m | 0.8 | 0.5 | 0.6 | 1.1 |
| PHO-s/TOT-m | 0.6 | 0.6 | − | − | |
| PHI-s/PHI-m | − | − | 0.4 | 1.2 | |
| L1 | TOT-s/TOT-m | 0.6 | 0.6 | 0.3 | 0.5 |
| PHO-s/TOT-m | 0.5 | 1.2 | − | − | |
| PHI-s/PHI-m | − | − | 0.3 | 0.6 | |
| L2 | TOT-s/TOT-m | 0.8 | 1.0 | 0.2 | n.a. |
| PHO-s/TOT-m | 0.6 | 0.5 | − | − | |
| PHI-s/PHI-m | − | − | 0.2 | 0.5 |
The extraction efficiency was calculated as the ratio between the average gravimetric yield of sticks and associated milled sample. The yields of heptane and DCM fraction of the TOT extraction were considered representative for the respective fractions of the PHO procedure, and the calculations therefore based on the TOT yields. DCM, dichloromethane; EtOH, ethanol; S, spruce; L, larch; 1/2, tree 1 or 2; s, stick; m, milled; TOT, total extracted; PHO, hydrophobic extracted; PHI, hydrophilic extracted.