23 febrero 2015
Scientists have developed tannin extraction from softwood bark. At least 130 kg of crude tannin powder can be produced from one ton of dry wood bark, still leaving 87% of the original bark mass available for incineration. In Finland, tannin could replace, in particular, fossil-based phenols in adhesives used in the wood products industry.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/gOXh85nzguw/150223084051.htm
