アカマツ材のパルプに関する研究(XXI) : アカマツ心材から分離されたフエノール性物質について(1)

概要

論文の詳細を見る
The heartwood constituents of one sample of Japanese red pine (Pinus densiflora S. et Z.) have been investigated. The following substances were isolated in crystalline form from 2 kg of the heartwood : Pinosylvin (3,5-Dihydroxy-stilbene) 2.26 g, Pinosylvin monomethyl ether (3-Hydroxy, 5-methoxystilbene) 4.18 g, Pinocembrin (5,7-Dihydroxyflavanone) 0.46 g, Pinobanksin (3,5,7-Trihydroxyflavanone) 0.22g, Dihydro-pinosylvin monomethyl ether (3-hydroxy, 5-methoxydibenzyl) 0.18 g, Unknown substance (m. p. 215-16℃) 0.24 g, and l-Arabinose 0.44g. These substances except l-Arabinose were examined on the solubility in many solvents under the state, cold and hot, on the colouring reaction with several reagents, and on the anti-pulping action in the normal sulphite process. The unknown substance isolated here, is like the flavone type phenols in some point, and probably it is not a substance of pinosylvin type phenols judging its characters. When this substance was tested chromatographically using the Lind-stedt's standard solvent (ligroin-benzol-methanol-water), it acquired orange red colour with diazotized benzidine solution within 2-3 minutes, but its R_f value was 0.00.The addition of a small quantity of each one of these phenolic substances to the extracted sapwood caused the retarding of the sulphite pulping of the wood. The anti-pulping action of Pinosylvin is the most remarkable of all, and that of Pinocembrin and Pinobanksin is comparatively small.
一般社団法人日本森林学会の論文
1953-06-25

アカマツ材のパルプに関する研究(XXI) : アカマツ心材から分離されたフエノール性物質について(1)

スポンサーリンク

概要

著者

関連論文

スポンサーリンク