In Belgium, the results of a field trial with genetically modified poplar trees in Zwijnaarde, Belgium, shows that the wood of lignin modified poplar trees can be converted into sugars in a more efficient way. These sugars can serve as the starting material for producing bio-based products like bio-plastics and bio-ethanol.
The field trial however also showed that the suppression of the lignin biosynthesis in the trees is variable. In some trees the suppression is stronger than in other trees which is visible through a more pronounced red coloration of the wood beneath the bark. The branches with the highest red coloration produce 160% more ethanol. On the whole the ethanol yield per gram of wood is 20% higher.
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