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, in Vitro Anti-inflammatory, Antioxidant and Antimicrobial Activities of Essential Oils from Leaf and Twig Parts of Cupressus Cashmeriana

2015 ◽  
Vol 10 (8) ◽  
pp. 1934578X1501000 ◽  
Author(s):  
Yu-Chang Su ◽  
Kuan-Ping Hsu ◽  
Kuo-Feng Hua ◽  
Chen-Lung Ho
Keyword(s):  
Nitric Oxide ◽  
Essential Oils ◽  
Antimicrobial Activities ◽  
Raw 264.7 ◽  
Nitric Oxide Production ◽  
Leaf Oil ◽  
Anti Inflammatory ◽  
Antioxidant And Antimicrobial Activities ◽  
Type Apparatus

The chemical composition and in vitro anti-inflammatory, antioxidant and antimicrobial activities of the essential oils isolated from the leaf and twig of Cupressus cashmeriana have been investigated. The essential oils were isolated using hydrodistillation in a Clevenger-type apparatus, and characterized by GC–FID and GC–MS, respectively. The leaf oil mainly consisted of α-pinene (21.8%), epizonarene (8.0%), sabinene (7.9%), limonene (7.6%), γ-terpinene (7.0%), and allo-aromadendrene (7.0%); the twig oil was mostly carvacrol methyl ether (35.4%), manool (16.1%), carvacrol (14.2%), and (2 Z,6 E)-farnesol (6.9%). Twig oil, but not leaf oil, was able to reduce nitric oxide production by lipopolysaccharide-activated murine macrophages RAW 264.7 without reducing the cell viability. In addition, twig oil showed better antioxidant and antimicrobial activities than leaf oil. The major ingredient of the twig oil that was responsible for the anti-inflammatory, antioxidant and antimicrobial activities was carvacrol.

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 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 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, in vitro Cytotoxicity, and Anti-mildew Activities of the Leaf Essential Oil of Machilus thunbergii from Taiwan

2015 ◽  
Vol 10 (11) ◽  
pp. 1934578X1501001
Author(s):  
Yu-Chang Su ◽  
Kuan-Ping Hsu ◽  
Shu-Ching Li ◽  
Chen-Lung Ho
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
In Vitro Cytotoxicity ◽  
Active Source ◽  
Leaf Oil ◽  
Machilus Thunbergii ◽  
Leaf Essential Oil ◽  
Main Components ◽  
Type Apparatus

This study investigated the chemical composition, in-vitro cytotoxicity, and anti-mildew fungal activities of the essential oil isolated from the leaf of Machilus thunbergii from Taiwan. The essential oil was isolated using hydrodistillation in a Clevenger-type apparatus, and characterized by GC–FID and GC–MS. Eighty-three compounds were identified, representing 99.8% of the oil. The main components identified were n-decanal (26.6%), β-caryophyllene (15.8%), α-humulene (10.8%), and β-eudesmol (10.5%). The oil exhibited cytotoxic activity against human oral, liver, lung, colon, melanoma, and leukemic cancer cells. The active source compounds were β-caryophyllene, α-humulene, and β-eudesmol. The anti-mildew activity of the leaf oil was also evaluated. Results showed that the leaf oil had excellent anti-mildew activity. For the anti-mildew activity of the leaf oil, the active source compound was determined to be β-eudesmol.

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, in-vitro Anticancer, and Antimicrobial Activities of the Leaf Essential Oil of Machilus mushaensis from Taiwan

2013 ◽  
Vol 8 (2) ◽  
pp. 1934578X1300800
Author(s):  
Yu-Chang Su ◽  
Chen-Lung Ho
Keyword(s):  
Essential Oil ◽  
Antimicrobial Activities ◽  
Disc Diffusion ◽  
Gram Positive Bacteria ◽  
Moderate Growth ◽  
Leaf Essential Oil ◽  
Inhibition Zones ◽  
Main Components ◽  
Broth Dilution

This study investigated the chemical composition, in-vitro anticancer, and antimicrobial activities of the essential oil isolated from the leaf of Machilus mushaensis from Taiwan. The essential oil was isolated using hydrodistillation in a Clevenger-type apparatus, and characterized by GC-FID and GC-MS. Forty compounds were identified, representing 100% of the oil. The main components identified were n-decanal (61.0%), and α-cadinol (20.8%). The oil exhibited cytotoxic activity against human oral, liver, lung, colon, melanoma, and leukemic cancer cells. The antimicrobial activity of the oil was tested by the disc diffusion and micro-broth dilution methods against ten microbial species. The oil exhibited moderate growth suppression against Gram-positive bacteria and yeast with inhibition zones of 25-29 mm to MIC values of 375-500 μg/mL, respectively. α-Cadinol was found to show promising anticancer and antimicrobial activities.

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