• Bulletin of the Korean Chemical Society
• /
• v.33 no.4
• /
• pp.1360-1362
• /
• 2012

• Journal of the Korean Chemical Society
• /
• v.68 no.4
• /
• pp.199-204
• /
• 2024

Chamaecyparis obtusa (Siebold & Zucc.) Endl. is an evergreen tree of the family Cupressaceae well known for its unique scents. The seed extract of this cypress tree was phytochemically investigated to isolate a novel abietane-diterpene compound (1) along with fifteen known terpenoids (2-16). All of the isolated compounds were subjected to the screening of antimicrobial activities against Cutibacterium acnes and Staphylococcus epidermidis including erythromycin resistant strains. Among the isolates, 1α-hydroxy-hinokione (1), hinokione (3), 1,2-dehydrohinokione (4) and ferruginol (9) showed significant antibacterial activities against both acne-causing strains. This study demonstrated that abietane-type diterpenoids are the main antibacterial components in C. obtusa seed extract, and some isolated compounds can be further developed as potential acne-treatment agents.

• Korean Journal of Heritage: History & Science
• /
• v.54 no.4
• /
• pp.78-89
• /
• 2021

Organic residues analysis is an analysis method that reveals the types of organic material samples by using the characteristic that main components constituting substances are different depending on the species of animals and plants. In this study, scientific analysis of the organic residues attached to wood coffins in the Joseon Dynasty Hoemyo excavated from the site of Singok-dong, Uijeongbu was used to identify the types of remnants and to use them as information to restore the uses of organic materials and the way they lived in the past. As a result of FT-IR analysis of the residue attached to the inside of the wood, it was estimated to be a natural plant resin material. In addition, as a result of analysis by GC-MS to confirm the characteristic factors of natural resins, diterpenoids (abietane) and pimaran (pimarane), such as dehydroabietic acid and pimaric acid (diterpenoid) compounds, and saturated and unsaturated fatty acid components were detected together. Diterpenoid compounds are components mainly found in Pinaceae resins. It is confirmed in the literature that rosin, a representative material of Pinaceae resin, was used as an adhesive material. Considering the situation where an organic material remained at the joint of the wood, the organic material attached to the wood is judged to be an adhesive material made of Pinaceae resin. In addition, the fatty acid component detected together is a component derived from plant oil, and it is presumed to be made by mixing rosin and oil as recorded in previous studies. This study confirms that organic residues remain in the burial environment without losing their characteristics. It is expected that scientific analysis of organic residues will be conducted in the future to accumulate information necessary for the interpretation of past living culture.