Lignin is an organic substance in wood that, with cellulose, forms the principal constituent of wood tissue.
It was discovered by the Swiss botanist Augustin Pyramus (or Pyrame) de Candolle. In his 1815 publication, he described lignin (called as “lignine” by him) in the following manner:
- A fibrous, tasteless substance which is insoluble in water and alcohol.
- Soluble in weak alkaline solutions and precipitated by acids.
- The basis of all woody bodies.
Here is a photograph of pure lignin:
[ux_image_box img=”1004″ image_width=”50″ link=”https://www.biobasedpress.eu/2014/12/bio-aromatics/pure-lignin/” target=”_blank”]
Here is a portrait of A. P. de Candolle:
[ux_image_box img=”1007″ image_width=”50″ link=”https://en.wikipedia.org/wiki/Augustin_Pyramus_de_Candolle” target=”_blank”]