A study of the nature of plant lignin by means of alkaline nitrobenzene oxidation

Publisher Website
Google Scholar
Abstract
Considerable losses of vanillin, p-hydroxy-benzaldehyde and syringaldehyde occur when these aldehydes are added to plant material before oxidation with alkaline nitrobenzene. The recovery of added aldehyde was no better from fully extracted than from unextracted plant tissue. In general, losses of aldehyde during the oxidation were greater with the young than with the older tissues. The ethanol-benzene and hot-water extractions remove appreciable amounts of aldehyde-forming material. The percentage of p-hydroxybenzaldehyde obtained on oxidation of plant material does not increase with increasing plant age; the percentage of vanillin formed increased slightly, and the percentage of syringaldehyde produced increases very markedly. The yield of aldehyde in relation to Klason lignin is greater for young than for the more mature tissues.

This publication has 1 reference indexed in Scilit: