Open AccessOn the use of ZnCl2 together with HCl in lignin determinations
Author(s) -
L. Paloheimo,
K Vainio
Publication year - 1959
Publication title -
agricultural and food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.347
H-Index - 35
eISSN - 1795-1895
pISSN - 1459-6067
DOI - 10.23986/afsci.71504
Subject(s) - lignin , hydrochloric acid , decomposition , chemistry , organic chemistry , nuclear chemistry , chromatography
As König’s proposal on the use of ZnCl2 together with hydrochloric acid in lignin determinations seems, after Poppoffs experiments, to have been neglected some experiments based on this principle were performed. A mixture of 150 g ZnCl2 and 100 ml concentrated hydrochloric acid appeared to be the most effective for the decomposition of the cell wall carbohydrates. The results obtained were highly comparable to those obtained from the use of 72 per cent H2SO, as hydrolysator. The lignin preparations were lighter in colour than those obtained by the H2SO4 method.