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7739046 
Journal Article 
Terpenoids in Wood, and Resinous Exudates of a Fallen Branch of Joumon-sugi (Cryptomeria japonica) 
Morita, S 
2011 
1 
Mokuzai Gakkaishi
ISSN: 0021-4795 
57 
3 
169-177 
English 
WOS:000292993600006 
Terpenoid compounds obtained from the extractives of sound heartwood, rotten portions, and resinous exudates of a fallen branch of Joumon-sugi (a symbolic old tree of Cryptomeria japonica growing on Yakushima Island, Kagoshima, Japan, where it is listed as a World Natural Heritage, of 25.3 m height and 16.4 m girth at breast height) were analyzed. Some terpenoid compounds containing an aromatic group including cadalene were found in addition to <5-cadinene which was the major component in the neutral parts of hexane solubles of the sound heartwood. The proportions of sesquiterpenes and oxygen-containing sesquiterpenoids were higher in the components of sound heartwood terpenoids. On the other hand, sesquiterpenes were decreased, and diterpenoids and unidentified compounds occupied a large proportion of the components of rotten portion extractives. Main compounds in the exuded resin of the branch were α-pinene, 6, 7-dehydroferruginol, and ferruginol. The exudates contain less oxygen-containing sesquiterpenoids than the exuded resin from a 35-year-old planted yakusugi (a cultivar of sugi) tree that was injured with a pin from outside of the trunk to its sapwood. © 2011, The Japan Wood Research Society. All rights reserved. 
Joumon-sugi (Cryptomeria japonica); terpenoids; branch; resinous exudates; Yakushima Island