barking mad

Polyphenols from the forestry industry, bark, is a large volume opportunity. I have played around in this space previously and have an idea that I think I can work on with Scion, which could be a high-value opportunity from the bark. They will probably think the idea is left-field. Better than leaving the bark out in the field. What people don't understand is that bark is essentially a skin. Just like our skin it sensors its environment and informs the tree of what is happening in its surroundings. The interaction of photons with the bark could provide the opportunity to do photo-Fenton chemistry which will provide the death and regeneration cycle and result in the production of regenerative biomaterials. I have previously used these materials in some of my work and shown they are able to be deconstructed and appear to produce potential products of interest. Will explore in the future. 

The bark appears to be a photon storage system. The bonds present in tyrosine molecules provide aromatic rings that capture UV light. I wonder if bark can split water in a solar cell?   

Found the following paper.

Fenton reactions driven by dihydroxybenzenes (DHBs) have been used for pollutant removal via advanced oxidation processes (AOPs), but such systems have the disadvantage of DHB release into the aqueous phase. In this work, insoluble tannins from the bark can be used to drive Fenton reactions and as heterogeneous support. This avoids the release of DHBs into the aqueous phase and can be used for AOPs. The production of ·OH was investigated using a spin-trapping electron paramagnetic resonance technique (5-dimethyl-1-pyrroline-N-oxide/·OH) in the first minute of the reaction and a high-performance liquid chromatography-fluorescence technique (coumarin/7-hydroxycoumarin) for 20 min. The ·OH yield achieved using insoluble tannins from Pinus radiata bark was higher than that achieved using catechin to drive the Fenton reaction. The Fenton-like system driven by insoluble tannins achieved 92.6 ± 0.3 % degradation of atrazine in 30 min. The degradation kinetics of atrazine was linearly correlated with ·OH production. The increased reactivity in ·OH production and insolubility of the ligand are promising for the development of a new technique for degradation of pollutants in wastewater using heterogeneous Fenton systems.


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