Table 1 Samples were analyzed with photography, digital light microscopy, and/or IR spectroscopy in this study, and details are provided for each maturation run.
Resin sample | Resin notes | Source | Maturation run | Clay | Compaction | Temperature | Pressurizing gas | Pressure | Total duration* | Run description |
|---|---|---|---|---|---|---|---|---|---|---|
Sticky P. sylvestris** | Sticky, moist, & fragrant | CBG | A | Bentonite | 8 metric tons | ~ 130 °C | Air | ~ 159 bar for 22 h, then ~ 248 bar for 0.5 h | ~ 22.5 h | Low pressure, then short period of high pressure, all while under heat |
P. mugo | ||||||||||
Dry P. sylvestris | Dry | |||||||||
Dry P. sylvestris | Dry | CBG | B | Bentonite | 8.5 metric tons | ~ 135 °C for 22.7 h, then cool down | Air | ~ 241 bar for 24.25 h | ~ 24.25 h | High pressure, which continued after cool down |
Sticky P. sylvestris | Sticky, moist, & fragrant | CBG | C*** | Bentonite | 8–8.5 metric tons | ~ 135–140 °C for 19.05 h, then cool down to ~ 30 °C, then ~ 145–150 °C for 24.08 h | Air | ~ 241 bar during first heating, then vented to ~ 172 bar before second heating, then brought back to ~ 241 bar during second heating | ~ 41.13 h | Double heating at high temperature, high pressure |
P. mugo | ||||||||||
DryP. sylvestris | Dry | |||||||||
Sticky P. sylvestris | Sticky, moist, & fragrant | |||||||||
P. mugo | ||||||||||
Dry P. sylvestris | Dry | |||||||||
Fresh Resin | Untreated, freshly collected | FSA | NA | NA | NA | NA | NA | NA | NA | NA |
