3 樹皮の基質に就て(予報)

概要

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The author studied for the ground substances of general tree-barks which were not yet cleared by chemical researches and some results were obtained as follows ; (1) The yields (17-52%), s. g. (smaller than water) or states in ordinary temperature of tars and appearances of residual charcoals obtained by drydistillation of outer barks were different from wood-tar, therfore it was suggested that the ground substances should not be cellulose and differ with one another. (2) The purified outer barks (extracted by alcohol-C_6H_6 1 : 1 and by water under 120°) were converted into almost soluble matter by diluted alkali-digestion from which the large quantities of fatty acids (42.84-52.16% against original barks) were obtained. From this result, author thought that the ground substances of barks were high molecular matters such as spollopolenin, cutin and suberin. (3) The purified outer barks resisted against oxidizing agent (30% H_3O_2 5cc+gracial acetic acid 64.5cc). Seeing above result, their ground substances must belong to suberingroup.
一般社団法人日本森林学会の論文
1951-01-25