Post 190600 (missing)
(halfapint: "Lignin Syringaldehyde Again", Novel Discourse). I have typically attained over 10% ether soluble lignin components from hardwood sawdust, comprising largely vanillin and syringaldehyde. Cardboard, corrugated paper, produces yet higher yields, for reasons not known to me. Apparatus is a cast iron pot and a whisk for the air oxidation, though air injection helps. Also seePost 214730 (https://www.thevespiary.org/talk/index.php?topic=11470.msg21473000#msg21473000)
(halfapint: "The Hibbert Ketones of Lignin", Novel Discourse).