The phenolic content in the surface layers (i.e. 0–0.25 mm depth) seemed to be higher after kiln drying than after air drying at room temperature (Fig 3B). The scatter of the data was fairly large, but lower contents of phenols were observed in the lower surface layers.

Does kiln drying remove phenols?

But remember: kiln-drying is focused on removing water, not phenols and not abietic acid. Even though some lightweight compounds evaporate during the kiln-drying process, not all will, and that is the discerning point here.

Is kiln dried pine toxic?

All pine bedding is highly toxic, even if some types are drastically worse than others. Another way some pine shavings may be more toxic than others has to do with the kiln drying process. ... Depending on which part of the wood your shavings are coming from, your pine may be more or less toxic than average.