They are both carbon based polymers with excellent mechanical properties. They both consist of monomer units with many aromatic ring structures.
"Lignin is like a water tight glue that binds the cellulose together. It also protects cellulose from degrading under the sun's ultraviolet rays and decomposing from microbes, bugs and fungi. Hemicellulose binds the cellulose and lignin, which are not very compatible. "
"The biggest barrier to converting inexpensive biomass to fuels is efficiently extracting the sugars from biomass. The lignin component of biomass is like the glue in fiberglass that protects the sugar fibers. Peracetic acid is strong oxidant that can break down lignin, but it is too expensive to manufacture. We are engineering enzymes to efficiently produce peracetic acid. Besides biofuel manufacture, enzyme-generated peracetic acid may be a green oxidizing reagent for organic synthesis and a water disinfectant for developing countries. "
METAMIA is a free database of analogy and metaphor. Anyone can contribute or search. The subject matter can be anything. Science is popular, but poetry is encouraged. The goal is to integrate our fluid muses with the stark literalism of a relational database. Metamia is like a girdle for your muses, a cognitive girdle.