scholarly journals Composition and Antimicrobial Activities of the Leaf Essential Oil of Machilus kusanoi from Taiwan

2011 ◽  
Vol 6 (2) ◽  
pp. 1934578X1100600 ◽  
Author(s):  
Chen-Lung Ho ◽  
Kuang-Ping Hsu ◽  
Yen-Hsueh Tseng ◽  
Eugene I-Chen Wang ◽  
Pei-Chun Liao ◽  
...  
Keyword(s):  
Essential Oil ◽  
Wood Decay ◽  
Antimicrobial Activities ◽  
Sesquiterpene Hydrocarbons ◽  
Leaf Oil ◽  
Leaf Essential Oil ◽  
Main Components

The hydrodistillated leaf essential oil of Machilus kusanoi was analyzed to determine its composition and yield. Twenty-three compounds were identified, the main components being β-caryophyllene (23.3%), β-eudesmol (17.1%), α-terpineol (16.0%), n-dodecanal (14.2%), and n-decanal (10.4%). Sesquiterpene hydrocarbons (28.1%) and non-terpenoids (25.0%) were the predominant groups of compounds. The leaf oil exhibited excellent antimicrobial and anti-wood-decay fungal activities.

scholarly journals Composition and Antimicrobial Activity of the Leaf Essential oil of Litsea kostermansii from Taiwan

2009 ◽  
Vol 4 (8) ◽  
pp. 1934578X0900400 ◽  
Author(s):  
Chen-Lung Ho ◽  
Eugene I-Chen Wang ◽  
Kuang-Ping Hsu ◽  
Pei-Yeh Lee ◽  
Yu-Chang Su
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil ◽  
Antimicrobial Activities ◽  
Sesquiterpene Hydrocarbons ◽  
Leaf Oil ◽  
Leaf Essential Oil ◽  
Main Components

The hydrodistillated leaf essential oil of Litsea kostermansii was analyzed to determine its composition and yield. Seventy-three compounds were identified, the main components being β-eudesmol (22.5%), γ-eudesmol (18.6%), δ-selinene (8.5%), α-eudesmol (6.0%), and γ-muurolene (4.7%). Oxygenated sesquiterpenes (66.2%) and sesquiterpene hydrocarbons (32.8%) were the predominant groups of compounds. The leaf oil exhibited excellent antimicrobial activities.

scholarly journals Composition and Antifungal Activities of the Leaf Essential Oil of Neolitsea parvigemma from Taiwan

2011 ◽  
Vol 6 (9) ◽  
pp. 1934578X1100600
Author(s):  
Chen-Lung Ho ◽  
Pei-Chun Liao ◽  
Eugene I-Chen Wang ◽  
Yu-Chang Su
Keyword(s):  
Essential Oil ◽  
Trichoderma Viride ◽  
Wood Decay ◽  
Aspergillus Clavatus ◽  
Decay Fungi ◽  
Wood Decay Fungi ◽  
Sesquiterpene Hydrocarbons ◽  
Leaf Oil ◽  
Leaf Essential Oil ◽  
Main Components

The hydrodistillated leaf essential oil of Neolitsea parvigemma was analyzed to determine its composition and yield. Sixty-two compounds were identified, the main components being β-caryophyllene (14.2%), β-eudesmol (12.9%), α-cadinol (10.2%) and τ-cadinol (8.8%). Oxygenated sesquiterpenes (48.9%) and sesquiterpene hydrocarbons (48.8%) were the predominant groups of compounds. The antifungal indexes of the leaf oil against the 7 fungi, Aspergillus clavatus, A. niger, Chaetomium globosum, Cladosporium cladosporioides, Myrothecium verrucaria, Penicillium citrinum and Trichoderma viride, were 100.0, 72.3, 100.0, 100.0, 100.0, 75.8 and 88.6% at a 1 mg/mL concentration, respectively. The oil also exhibited anti-wood-decay-fungi activity against Trametes versicolor, Phaneochaete chrysosporium, Phaeolus schweintizii, and Lenzites sulphureu with MIC values of 50, 50, 25 and 25 μg/mL, respectively. For the antifungal and anti-wood-decay fungal activities of the oil, the active source compounds were determined to be α-cadinol, β-eudesmol and τ-cadinol.

scholarly journals Composition and Antimicrobial and Anti-wood-decay Fungal Activities of the Leaf Essential Oils of Machilus pseudolongifolia from Taiwan

2010 ◽  
Vol 5 (7) ◽  
pp. 1934578X1000500
Author(s):  
Chen-Lung Ho ◽  
Pei-Chun Liao ◽  
Kuang-Ping Hsu ◽  
Eugene I-Chen Wang ◽  
Wei-Chih Dong ◽  
...  
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Wood Decay ◽  
Sesquiterpene Hydrocarbons ◽  
Leaf Oil ◽  
Leaf Essential Oil ◽  
Main Components

The hydrodistillated leaf essential oil of Machilus pseudolongifolia was analyzed to determine its composition and yield. Seventy compounds were identified, the main components being β-eudesmol (26.8%), α-cadinol (20.8%), viridiflorene (8.9%), α-caryophyllene (5.3%), globulol (4.6%) and β-caryophyllene (4.2%). Oxygenated sesquiterpenes (60.1%) and sesquiterpene hydrocarbons (31.4%) were the predominant groups of compounds. The leaf oil exhibited excellent antimicrobial and anti-wood-decay fungal activities.

scholarly journals Composition, in vitro Anti-inflammatory, Antioxidant and Antimicrobial Activities of the Leaf Essential Oil of Machilus konishii from Taiwan

2016 ◽  
Vol 11 (9) ◽  
pp. 1934578X1601100
Author(s):  
Yu-Chang Su ◽  
Kuan-Ping Hsu ◽  
Chen-Lung Ho
Keyword(s):  
Essential Oil ◽  
Antimicrobial Activities ◽  
Raw 264.7 ◽  
Nitric Oxide Production ◽  
Leaf Oil ◽  
Leaf Essential Oil ◽  
Anti Inflammatory ◽  
Main Components ◽  
Antioxidant And Antimicrobial Activities

The chemical composition and in vitro anti-inflammatory, antioxidant and antimicrobial activities of the leaf essential oil of Machilus konishii has been investigated. The essential oil was isolated using hydrodistillation in a Clevenger-type apparatus, and characterized by GC–FID and GC–MS. Sixty-six compounds were identified, representing 100% of the oil. The main components identified were α-pinene (33.9%), β-pinene (13.9%), and thymol (12.0%). The leaf oil was able to reduce nitric oxide production by lipopolysaccharide-activated murine macrophages RAW 264.7 without reducing the cell viability. In addition, the leaf oil showed strong antioxidant and antimicrobial activities. The major ingredient of the oil that was responsible for the anti-inflammatory, antioxidant and antimicrobial activities was thymol.

scholarly journals Composition and Antimicrobial Activity of the Leaf Essential Oil of Litsea Nakaii from Taiwan

2009 ◽  
Vol 4 (6) ◽  
pp. 1934578X0900400
Author(s):  
Chen-Lung Ho ◽  
Eugene I-Chen Wang ◽  
Pei-Yeh Lee ◽  
Yu-Chang Su
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil ◽  
Antimicrobial Activities ◽  
Leaf Oil ◽  
Leaf Essential Oil ◽  
Main Components

The leaf essential oil of Litsea nakaii was isolated by hydrodistillation and analyzed to determine its composition and yield. Fifty-five compounds were identified, the main components being α-humulene (15.5%), δ-cadinene (9.2%), ( E)-β-ocimene (8.1%), and δ-selinene (7.1%). The leaf oil exhibited excellent antimicrobial activities.

scholarly journals Composition and Antifungal Activities of the Leaf Essential oil of Litsea Coreana from Taiwan

2010 ◽  
Vol 5 (10) ◽  
pp. 1934578X1000501 ◽  
Author(s):  
Chen-Lung Ho ◽  
Kuang-Ping Hsu ◽  
Yen-Hsueh Tseng ◽  
Pei-Chun Liao ◽  
Eugene I-Chen Wang ◽  
...  
Keyword(s):  
Essential Oil ◽  
Wood Decay ◽  
Antifungal Activities ◽  
Leaf Oil ◽  
Leaf Essential Oil ◽  
Main Components

The hydrodistilled leaf essential oil of Litsea coreana was analyzed by GC/FID and GC/MS. Fifty-two compounds were identified, the main components being n-decanal (27.5%), 2 E,6 E-farnesol (25.8%), β-eudesmol (10.3%), ethyl n-dodecanoate (8.0%) and τ-cadinol (6.6%). Oxygenated sesquiterpenes (56.8%) and non-terpenoids (37.0%) were the predominant groups of compounds. The leaf oil exhibited excellent antifungal and anti-wood-decay fungal activities.

Composition, Antioxidant and Antimicrobial Activities of the Leaf Essential Oil of Machilus Japonica from Taiwan

2012 ◽  
Vol 7 (1) ◽  
pp. 1934578X1200700
Author(s):  
Chen-Lung Ho ◽  
Yu-Chang Su
Keyword(s):  
Essential Oil ◽  
Radical Scavenging ◽  
Antimicrobial Activities ◽  
Disc Diffusion ◽  
Gram Positive Bacteria ◽  
Leaf Essential Oil ◽  
Inhibition Zones ◽  
Main Components ◽  
Broth Dilution ◽  
Antioxidant And Antimicrobial Activities

The chemical composition, and antioxidant and antimicrobial activities of the essential oil isolated from the leaf of Machilus japonica from Taiwan have been investigated. The essential oil from the fresh leaves was isolated using hydrodistillation in a Clevenger-type apparatus, and characterized by GC-FID and GC-MS. A total of 97 compounds were identified, representing 100% of the oil. The main components identified were α-phellandrene (14.5%), α-pinene (12.8%), thymol (12.6%), β-pinene (8.3%), α-terpineol (6.5%) and carvacrol (6.0%). The antioxidant activity of the oil was tested by the DPPH (2,2-diphenyl-1-picrylhydrazyl) free radical scavenging capability test. The results showed that the IC50 was 51.8 μg/mL. 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 48~54 mm and MIC values of 16.12~32.25 μg/mL, respectively. For the antioxidant and antimicrobial activities of the oil, the active source compounds were determined to be thymol and carvacrol.

scholarly journals Composition and in vitro Anticancer Activities of the Leaf Essential Oil of Neolitsea variabillima from Taiwan

2013 ◽  
Vol 8 (4) ◽  
pp. 1934578X1300800 ◽  
Author(s):  
Yu-Chang Su ◽  
Kuan-Ping Hsu ◽  
Eugene I-Chen Wang ◽  
Chen-Lung Ho
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Cytotoxic Activity ◽  
Cancer Cells ◽  
Anticancer Activities ◽  
Leaf Oil ◽  
Leaf Essential Oil ◽  
Main Components ◽  
Type Apparatus

This study investigated the chemical composition and in vitro anticancer activities of the essential oil isolated from the leaf of Neolitsea variabillima. The essential oil was isolated using hydrodistillation in a Clevenger-type apparatus, and characterized by GC-FID and GC-MS. Sixty-seven compounds were identified, representing 100% of the oil. The main components identified were trans-β-ocimene (13.4%), α-cadinol (10.5%), terpinen-4-ol (9.3%), τ-cadinol (9.2%), β-caryophyllene (8.8%), and sabinene (6.7%). The anticancer activities of oil were evaluated. The results showed that the oil exhibited cytotoxic activity against human oral, liver, lung, colon, melanoma, and leukemic cancer cells. The presence of β-caryophyllene, τ-cadinol, and α-cadinol significantly contributed to the anticancer activities of N. variabillima leaf oil.

scholarly journals Composition and Anti-Wood-Decay Fungal Activities of the Leaf Essential oil of Machilus philippinensis from Taiwan

2010 ◽  
Vol 5 (2) ◽  
pp. 1934578X1000500
Author(s):  
Chen-Lung Ho ◽  
Kuang-Ping Hsu ◽  
Eugene I-Chen Wang ◽  
Chai-Yi Lin ◽  
Yu-Chang Su
Keyword(s):  
Essential Oil ◽  
Wood Decay ◽  
Monoterpene Hydrocarbons ◽  
Leaf Oil ◽  
Leaf Essential Oil

The hydrodistilled leaf essential oil of Machilus philippinensis was analyzed to determine its composition and yield. Seventy compounds were identified, the main ones being β-caryophyllene (13.6%), α-pinene (12.0%), α-cadinol (7.4%), cis-ocimene (7.0%), spathulenol (5.6%), (E)-nerolidol (5.3%), tau-cadinol (4.8%) and β-pinene (4.5%). Monoterpene hydrocarbons (36.1%) and oxygenated sesquiterpenes (33.0%) were the predominant groups of compounds. The leaf oil exhibited excellent anti-wood-decay fungal activities.

Anticancer Activity and Chemical Composition of Leaf Essential Oil from Solidago canadensis L. in China

2011 ◽  
Vol 347-353 ◽  
pp. 1584-1589 ◽  
Author(s):  
De Qiang Li ◽  
Sheng Hao Pan ◽  
Xi Wu Zhu ◽  
Lin Tan ◽  
Yue Fen Cao
Keyword(s):  
Essential Oil ◽  
Leaf Tissue ◽  
Bornyl Acetate ◽  
Cytotoxic Activities ◽  
Solidago Canadensis ◽  
Germacrene D ◽  
Leaf Oil ◽  
Leaf Essential Oil ◽  
Effect Level ◽  
Main Components

The essential oil was obtained at yield of 0.30% by hydrodistillation from fresh leaf tissue of Solidago canadensis L. collected from Zhejiang Province, China. GC and GC/MS analysis identified 46 components, representing 94.6% of the leaf oil. The main components were (-)germacrene D (28.4%), bornyl acetate (9.2%), D-Limonene (5.0%). The essential oil was tested for cytotoxic activities against three tumor cell lines. The inhibitory concentrations of the essential oil at 50% effect level (IC50) were 68.1 μg/ml for SMMC-7721, 71.4 μg/ml for SGC-7901, and 156.9 μg/ml for Hala, respectively.

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