Antitermitic activities of wood essential oil and its constituents from Chamaecyparis formosensis

In this study, anti-mildew fungal activities of the heartwood essential oil, and its constituents from Chamaecyparis formosensis were evaluated in vitro against 7 mildew fungi. The main compounds responsible for the anti-mildew fungal activities were isolated and identified. The heartwood essential oil of C. formosensis was isolated using hydrodistillation in a Clevenger-type apparatus, and characterized by GC-FID and GC-MS. The heartwood oil consisted primarily of myrtenol (18.4%), cis-myrtanol (14.0%), α-muurolol (13.8%), α-cadinol (12.7%), and chamaecynone (9.8%). The heartwood oil was shown to have excellent anti-mildew fungal activities. Further fractionation of the heartwood oil produced α-cadinol, chamaecynone, α-muurolol, τ-cadinol, and τ-muurolol. The 5 compounds exhibited very strong anti-mildew fungal activities. For the anti-mildew fungal activities of the heartwood oil, the active source compounds were determined to be α-cadinol, chamaecynone, α-muurolol, τ-cadinol, and τ-muurolol.

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Chemical composition and antifungal activity of essential oil isolated from Chamaecyparis formosensis Matsum. wood

Holzforschung ◽

10.1515/hf.2005.049 ◽

2005 ◽

Vol 59 (3) ◽

pp. 295-299 ◽

Cited By ~ 37

Author(s):

Sheng-Yang Wang ◽

Chi-Lin Wu ◽

Fang-Hua Chu ◽

Shih-Chang Chien ◽

Yueh-Hsiung Kuo ◽

...

Keyword(s):

Chemical Composition ◽

Antifungal Activity ◽

Essential Oil ◽

Trametes Versicolor ◽

Wood Decay ◽

Retention Indices ◽

Decay Fungi ◽

Wood Decay Fungi ◽

Chamaecyparis Formosensis ◽

Reference Samples

Abstract The chemical composition of the essential oil of Chamaecyparis formosensis wood has been examined. GC-MS data and retention indices for reference samples were used to identify 32 constituents. α-Eudesmol (18.06%), β-guaiene (8.0%), (–)-β-cadinene (7.89%), γ-costal (7.03%), α-muurolol (6.49%), 4α-hydroxy-4β-methyldihydrocostol (5.52%), σ-selinene (4.78%), santolina triene (4.60%), eremophilene (4.32%), humulene (4.11%), myrtenol (4.11%), and τ-cadinene (3.25%) were the most abundant components. Tests with the typical wood decay fungi, Laetiporus sulphureus and Trametes versicolor, proved the antifungal activity of the oil, as the growth of L. sulphureus and T. versicolor was inhibited at concentrations of 50 and 100 μg ml−1, respectively. The following characteristic volatile compounds were isolated and purified from ethyl acetate fractions: epi-cubenol, chamaecynone, myrtenol, cis-myrtanol, 12-hydroxyisointermedenol and 4α-hydroxy-4β-methyldi-hydrocostol. Chamaecynone possessed the strongest antifungal activity, with an antifungal index of 88.2% and 67.3% for L. sulphureus and T. versicolor at a dose of 50 μg ml−1, respectively.

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Benihiol, the Natural Dextro-rotatory Dihydro-myrtenol, Chief Constituent of the Essential Oil from the Wood of Chamaecyparis Formosensis, Matsum

NIPPON KAGAKU KAISHI ◽

10.1246/nikkashi1921.59.1285 ◽

1938 ◽

Vol 59 (11) ◽

pp. 1285-1295 ◽

Cited By ~ 1

Author(s):

Yeigai SEBE

Keyword(s):

Essential Oil ◽

Chamaecyparis Formosensis

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Insecticidal activity of essential oil from Chamaecyparis formosensis Matsum

Holzforschung ◽

10.1515/hf.2007.087 ◽

2007 ◽

Vol 61 (5) ◽

pp. 595-599 ◽

Cited By ~ 17

Author(s):

Pei-Min Kuo ◽

Fang-Hua Chu ◽

Shang-Tzen Chang ◽

Wen-Feng Hsiao ◽

Sheng-Yang Wang

Keyword(s):

Essential Oil ◽

Aedes Aegypti ◽

Aedes Albopictus ◽

Insecticidal Activity ◽

Tree Species ◽

Raw Material ◽

Mosquito Larvae ◽

Chamaecyparis Formosensis ◽

Insecticidal Activities

Abstract Chamaecyparis formosensis is an endemic precious tree species grown in Taiwan. Based on the results obtained in our current study, the essential oil of C. formosensis wood possesses significant insecticidal activities. In an assay to assess mosquito larvicidal properties, the essential oil completely killed the larvae of Aedes aegypti and Aedes albopictus at a dosage of 100 μg ml-1 in water. Concentrations of the essential oil at a dosage of 0.16 mg cm-3 in air resulted in 100% mortality of silverfish after 2 h. It was found that the extractives of C. formosensis possess multiple bioactivities against insects. There is great potential for the development of insecticides for domestic application to kill mosquito larvae and silverfish based on this raw material.

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Composition and Antipathogenic Activities of the Twig Essential Oil of Chamaecyparis formosensis from Taiwan

Natural Product Communications ◽

10.1177/1934578x1200700734 ◽

2012 ◽

Vol 7 (7) ◽

pp. 1934578X1200700

Author(s):

Chen-Lung Ho ◽

Kuo-Feng Hua ◽

Kuan-Ping Hsu ◽

Eugene I-Chen Wang ◽

Yu-Chang Su

Keyword(s):

Essential Oil ◽

Fungal Pathogens ◽

Pathogenic Fungi ◽

Phytopathogenic Fungi ◽

Growth Inhibitory ◽

Growth Inhibitory Activity ◽

Excellent Activity ◽

Chamaecyparis Formosensis ◽

Main Components

In this study, antipathogenic activities of the twig essential oil and its constituents from Chamaecyparis formosensis Matsum were evaluated in vitro against six plant pathogenic fungi. The essential oil from the fresh twigs was isolated using hydrodistillation in a Clevenger-type apparatus, and characterized by GC-FID and GC-MS. Twenty-five compounds were identified, representing 98.9% of the oil. The main components were β-eudesmol (25.1%), τ-muurolol (21.6%), elemol (15.0%), totarol (14.9%), and α-cadinol (12.4%). The twig oil (500 μg/mL) showed growth inhibitory activity against the phytopathogenic fungi, Fusarium oxysporum, Pestalotiopsis funereal, and Ganoderma austral, with antifungal indices of 92.7%, 71.1%, and 87.7%, respectively. In addition, the oil suppressed totally the growth of Rhizoctonia solani, Colletotrichum gloeosporioides, and Fusarium solani. In order to ascertain the source compounds of these antipathogenic activities, the main components were individually evaluated. τ-Muurolol and α-cadinol exhibited excellent activity against F. oxysporum, R. solani, C. gloeosporioides, and F. solani, with IC50< 50 μg/mL. These compounds also efficiently inhibited the mycelial growths of P. funereal and G. austral. Thus, α-cadinol and τ-muurolol could be considered as potential natural fungicides for controlling fungal pathogens and worth.

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