Lignin (from Latin lignum: wood) is a polyphenolic polymer deposited in the secondary and sometimes primary cell walls of plant cells. It is a hydrophobic substance that removes water from cell walls, limits lateral diffusion, facilitates longitudinal transport and enhances the mechanical strength of tissues, as well as making cells resistant to bacterial attack. In general, it provides high mechanical strength to cell walls. This molecule is very abundant in woody plants and is the second most abundant biopolymer on Earth, after cellulose.

Evolutionarily, it was a major breakthrough for land plants. Trees can have 20-30% lignin, while grasses have less than 20%. It is the only carbonaceous polymer in the cell wall that does not consist of carbohydrate monomers and is therefore more impermeable to water. It appeared with vascular plants in the Devonian.

LIBERATE project is about deliver a pilot scale #electrochemical plant to show the opportunities of converting low cost #lignin in high value bio-sustainable chemicals. 

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