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|標題:||Composition, Antioxidant, Antimicrobial and Anti-wood-decay Fungal Activities of the Twig Essential Oil of Taiwania cryptomerioides from Taiwan||作者:||Ho, C.L.
|關鍵字:||Taiwania cryptomerioides;Cupressaceae;Essential oil;Antioxidant;activity;Antimicrobial activity;Anti-wood-decay fungal activity;alpha-Cadinol;beta-Eudesmol;Ferruginol;leaf essential oil;chemical-composition;antifungal activity;antibacterial;heartwood;extractives;diterpenes;hayata||Project:||Natural Product Communications||期刊/報告no：:||Natural Product Communications, Volume 7, Issue 2, Page(s) 261-264.||摘要:||
This study investigated the chemical composition, antioxidant, antimicrobial and anti-wood-decay fungal activities of the essential oil isolated from the twigs of Taiwania clyptomerioides from Taiwan. The essential oil was isolated using hydrodistillation in a Clevenger-type apparatus, and characterized by GC-FID and GC MS. A total of 35 compounds were identified, representing 100% of the oil. The main components identified were alpha-cadinol (45.9%), ferruginol (18.9%) and beta-eudesmol (10.8%). The antioxidant activity of the oil was tested by the DPPH (2,2-dipheny1-1-picrylhydrazyl) free radical scavenging capability test. The results showed an IC50 of 90.8 +/- 0.2 mu g/mL. The active source compound was ferruginol. The antimicrobial activity of the oil was tested by the disc diffusion and micro-broth dilution methods against ten microbial species. The oil exhibited strong growth suppression against Gram-positive bacteria and yeast with inhibition zones of 45-52 mm and MIC values of 31.25-62.5 mu g/mL, respectively. The anti-wood-decay fungal activity of the oil was also evaluated. The oil demonstrated excellent activity against four wood-decay-fungal species. For the antimicrobial and anti-wood-decay fungal activities of the oil, the active source compounds were determined to be alpha-cadino1,beta-eudesmol and ferruginol.
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