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The Composition, Anti-mildew and Anti-wood-decay FungalActivities of the Leaf and Fruit Oils of Juniperus formosana fromTaiwan

By Yu-Chang Su, Kuan-Ping Hsu, Eugene I-Chen Wang and Chen-Lung Ho

Abstract

In this study, anti-mildew and anti-wood-decay fungal activities of the leaf and fruits essential oil and its constituents from Juniperus formosana wereevaluated in vitro against seven mildew fungi and four wood decay fungi, respectively. The main compounds responsible for the anti-mildew and anti-wooddecayfungal activities were also identified. The essential oil from the fresh leaves and fruits of J. formosana were isolated using hydrodistillation in aClevenger-type apparatus, and characterized by GC–FID and GC–MS, respectively. The leaf oil mainly consisted of α-pinene (41.0%), limonene (11.5%),α-cadinol (11.0%), elemol (6.3%), and β-myrcene (5.8%); the fruit oil was mostly α-pinene (40.9%), β-myrcene (32.4%), α-thujene (5.9%) and limonene(5.9%). Comparing the anti-mildew and anti-wood-decay fungal activities of the oils suggested that the leaf oil was the most effective. For the anti-mildew andanti-wood-decay fungal activities of the leaf oil, the active source compounds were determined to be -cadinol and elemol

Topics: Juniperus formosana, Essential oil, Antimildew activity, Anti-wood-decay fungal activity, α-Cadinol, Elemol
Year: 2014
OAI identifier: oai:ir.lib.nchu.edu.tw:11455/85279
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