Official Journal of the Japan Wood Research Society
From: Effects of heat treatment on water-soluble extractives and color changes of merbau heartwood
Heat treatment conditions | ΔL * | Δa * | Δb * | ΔE * | |
---|---|---|---|---|---|
Heating temperature (°C) | Heating time elapsed (h) | ||||
Control | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
100 | 4 | −13.5 | 1.2 | −5.6 | 17.5 |
140 | 4 | −16.8 | 2.3 | −9.9 | 22.1 |
170 | 4 | −32.5 | −21.7 | −12.6 | 41.1 |
200 | 4 | −34.7 | −40.8 | −18.7 | 55.1 |