The purpose of this investigation was to determine the nature of the
chemical constituents of incense cedar bark with the hope that such an endeavor
would spur future research, development and use of a now neglected
natural raw material.
The bark from nine trees, which were separated into three age...
The preparation of holocellulose accurately and rapidly is very
important to study the nature and relationships of the carbohydrate
components and the substituent groups, acetyl, carboxyl, and methoxyl.
In as much as bromine was thought to be less destructive to
wood than chlorine, it was decided to attempt to isolate...
Douglas fir bark fines which contained 74.8 percent
of Klason lignin and 70.2 percent of one percent sodium
hydroxide solubility and decayed Douglas fir wood which
contained 53.9 percent of Klason lignin were subjected to
ethanolysis. A slight modification of the Hibbert's
ethanolysis procedure was used. The monomeric compounds
present...
This investigation was undertaken to develop a procedure
by which the fatty acids could be separated from the
hydroxy fatty acids of bark waxes. The specific hexane-insoluble, benzene-soluble wax used in this research was obtained
from the bark of white fir, Abias concolor, (Lindl.
and Gord.).
The acids were removed...
Ethanolysis reactions were conducted on the flavonoids, such
as, catechin, quercetin and dihydroquercetin, and polymeric phenolic
components from conifer barks, such as, mountain hemlock phlobatannin
and Douglas-fir phlobaphene with the object of ascertaining
their chemical relationship. These reactions were carried out with
absolute ethanol in the presence of 2.5% hydrogen...