学術雑誌論文 The composition and chemical alteration of gums in the vessels of Phellodendron amurense

Zheng, Peiming  ,  Yagami, Sachie  ,  Aoki, Dan  ,  Yoshida, Masato  ,  Sano, Yuzou  ,  Matsushita, Yasuyuki  ,  Fukushima, Kazuhiko

71 ( 12 )  , pp.969 - 976 , 2017-11 , Walter de Gruyter
ISSN:0018-3830
内容記述
An occluding substance (gum) was observedin the vessels of Phellodendron amurense Rupr. and analysedby spectroscopic and chemical methods. Followingsafranin-alcian blue staining, the gum in sapwood (sW)turned to blue and in heartwood (hW) to red. The gum wasstudied in situ by UV and Raman microscopies, time-offlightsecondary ion mass spectrometry (TOF-SIMS). Thegum was isolated by laser microdissection (LMD) and itwas alkali hydrolysed and the degradation products wereanalysed by GC-MS. The staining experiments, and the UVand Raman microscopies indicated that the major componentof the sW gum is constituted of polysaccharides,while in the hW gum the aromatic character is dominating.TOF-SIMS measurements were interpreted as showingthe aromatic substances in the hW gum did not containlignin. The GC-MS analysis revealed the presence of vanillicacid in the degradation products of hW gum.
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