The chemical composition and antimicrobial activity of the leaf oil ofCupressus lusitanicafrom Monteverde, Costa Rica

The chemical composition of the essential oils obtained by hydrodistillation from air dried leaves, bark and roots of Glossocalyx staudtii Engl. grown in Gabon was analyzed by GC and GC-MS. The essential oil content was 0.84% (w/w), 0.28% (w/w), and 0.74% (w/w), respectively. The leaf oil was characterized by a high content of monoterpene hydrocarbons (64.8%), with β-pinene (30.6%) and α-pinene (22.6%) as the major constituents. The oil obtained from the bark contained 30.5% of oxygenated monoterpenes with cryptone as the main constituent (11.5%) and 28.9% of aliphatic compounds, with 9.3% of 2-tridecanone; in the roots oil, the main component was 2-tridecanone (55.2%). The antimicrobial activity of the oils was studied by means of the agar disc diffusion and broth microdilution methods. The Gram positive bacteria were the most sensitive to the essential oils. A significant anticandidal effect of the bark essential oil was observed.

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Leaf Essential Oil of Manekia naranjoana (Piperaceae) from Costa Rica and its Cytotoxic Activity

Natural Product Communications ◽

10.1177/1934578x1100600135 ◽

2011 ◽

Vol 6 (1) ◽

pp. 1934578X1100600 ◽

Cited By ~ 2

Author(s):

Carlos Chaverri ◽

Cecilia Díaz ◽

José F. Cicció

Keyword(s):

Costa Rica ◽

Chemical Composition ◽

Essential Oil ◽

Tumor Cell ◽

Cytotoxic Activity ◽

Tumor Cell Lines ◽

Capillary Gc ◽

Leaf Oil ◽

Leaf Essential Oil ◽

Low Toxicity

The chemical composition of the leaf oil of Manekia naranjoana (C. DC.) Callejas (Piperaceae) from Costa Rica was analyzed by capillary GC/FID and GC/MS. Fifty-five compounds were identified. Major compounds from the leaf oil were β-pinene (30.6%), α-pinene (18.8%), limonene (13.7%), and β-caryophyllene (6.1%). The oil presented very low toxicity to tumor and non-tumor cell lines, even though it contains components, such as α- and β-pinene, limonene and others, which have been shown to be cytotoxic. This is the first report of the chemical composition of the essential oil obtained from this species.

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Chemical Composition and Antibacterial Activity of the Essential Oils of Blainvillea Rhomboidea (Asteraceae)

Natural Product Communications ◽

10.1177/1934578x0600100510 ◽

2006 ◽

Vol 1 (5) ◽

pp. 1934578X0600100

Author(s):

Andreza Maria L. Pires ◽

Maria Rose Jane R. Albuquerque ◽

Edson P. Nunes ◽

Vânia M. M. Melo ◽

Edilberto R. Silveira ◽

...

Keyword(s):

Antimicrobial Activity ◽

Antibacterial Activity ◽

Chemical Composition ◽

Essential Oil ◽

Essential Oils ◽

Caryophyllene Oxide ◽

Bacterial Strains ◽

Aerial Parts ◽

Leaf Oil

The essential oils of Blainvellea rhomboidea (Asteraceae) were obtained by hydrodistillation and analyzed by GC/MS and GC/FID. Initially, the essential oil from the aerial parts was investigated. From the 18 identified components, 5-indanol (14.5%) followed by p-cymen-8-ol (10.1%), β-caryophyllene (9.6%), caryophyllene oxide (9.6%), limonene (8.6%), terpinolene (7.8%), and spathulenol (7.7%) were the major constituents. The oil was tested against seven bacterial strains and the results showed significant antimicrobial activity. As a consequence, the essential oils from leaves and from flowers were analyzed separately. The major constituents of the leaf oil were terpinolene (21.2%), β-caryophyllene (19.2%), spathulenol (9.1%), caryophyllene oxide (7.4%), and bicyclogermacrene (7.1%), while the oil of the flowers contained terpinolene (28.1%), 5-indanol (16.3%), p-cymen-8-ol (15.3%) and limonene (14.7%) as prevalent compounds. The oils were tested against the same bacterial strains and the flower oil was the more active. These results indicated that the components of the essential oil from flowers seem to be responsible for the activity.

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Chemical Composition and Antimicrobial Activity of the Leaf Oil ofAmomum cannicarpum(Wight) Bentham ex Baker

Journal of Essential Oil Research ◽

10.1080/10412905.2006.9699379 ◽

2006 ◽

Vol 18 (1) ◽

pp. 35-37 ◽

Cited By ~ 5

Author(s):

Joseph Mathew ◽

Baby Sabulal ◽

Varughese George ◽

Mathew Dan ◽

Sugathan Shiburaj

Keyword(s):

Antimicrobial Activity ◽

Chemical Composition ◽

Leaf Oil

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Chemical Composition and Antimicrobial Activity of the Leaf Oil fromSyzygium gardneriThw.

Journal of Essential Oil Research ◽

10.1080/10412905.2008.9699426 ◽

2008 ◽

Vol 20 (1) ◽

pp. 72-74 ◽

Cited By ~ 9

Author(s):

Gopan Raj ◽

Varughese George ◽

Nediyaparambil S. Pradeep ◽

Mathur G. Sethuraman

Keyword(s):

Antimicrobial Activity ◽

Chemical Composition ◽

Leaf Oil

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Composition and Antimicrobial Activity of the Leaf and Twig Oils of Litsea acutivena from Taiwan

Natural Product Communications ◽

10.1177/1934578x1100601145 ◽

2011 ◽

Vol 6 (11) ◽

pp. 1934578X1100601

Author(s):

Chen-Lung Ho ◽

Pei-Chun Liao ◽

Eugene I-Chen Wang ◽

Yu-Chang Su

Keyword(s):

Antimicrobial Activity ◽

Chemical Composition ◽

Essential Oils ◽

Wood Decay ◽

Active Compounds ◽

Leaf Oil ◽

Main Components ◽

Type Apparatus

The chemical composition, and antimicrobial and anti-wood-decay fungal activities of the essential oils isolated from the leaves and twigs of Litsea acutivena of Taiwan were investigated. The essential oils from the fresh leaves and twigs were isolated using hydrodistillation in a Clevenger-type apparatus, and characterized by GC–FID and GC–MS. Ninety-five and fifty-two compounds were identified in the leaf and twig oils, respectively. The main components of the leaf oil were γ-patchoulene (11.0%), δ-cadinene (6.3%), trans-muurola-3,5-diene (5.9%), and β-selinene (5.3%), whereas the main components of the twig oil were τ-cadinol (13.1%), β-selinene (9.6%), trans-β-ocimene (6.2%) and α-cadinol (7.7%). Bioactivity studies demonstrated that twig oil had excellent antimicrobial and anti-wood-decay fungal activities, superior to those of the leaf oil. For the antimicrobial and anti-wood-decay fungal activities of the twig oil, the active compounds were determined to be τ-cadinol and α-cadinol.

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Chemical composition of the leaf oil of Peperomia hernandiifolia (Piperaceae) from Costa Rica

Lankesteriana ◽

10.15517/lank.v5i1.21161 ◽

2015 ◽

Vol 5 (1) ◽

Author(s):

José Cicció

Keyword(s):

Costa Rica ◽

Chemical Composition ◽

Leaf Oil

Se estudió la composición del aceite esencial de las hojas de Peperomia hernandiifolia (Piperaceae) de Costa Rica, mediante la técnica de cromatografía de gases capilar y espectrometría de masas (GC/MS). Se identificaron ocho compuestos que representan cerca de 99% del aceite obtenido. El aceite está constituido casi exclusivamente por derivados de ácidos grasos. El decanal (85.0%) es el constituyente mayoritario, seguido por el ácido decanoico (12.6%).

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Chemical Composition and Cytotoxic Activity of the Leaf Essential Oil of Ocotea tonduzii from Monteverde, Costa Rica

Natural Product Communications ◽

10.1177/1934578x0700200716 ◽

2007 ◽

Vol 2 (7) ◽

pp. 1934578X0700200 ◽

Cited By ~ 9

Author(s):

Anita Bansal ◽

Debra M. Moriarity ◽

Sayaka Takaku ◽

William N. Setzer

Keyword(s):

Costa Rica ◽

Chemical Composition ◽

Essential Oil ◽

Cytotoxic Activities ◽

Germacrene D ◽

Leaf Oil ◽

Leaf Essential Oil ◽

Oil Components ◽

Mcf 7

The leaf essential oil of Ocotea tonduzii from Monteverde, Costa Rica has been obtained by hydrodistillation and analyzed by GC-MS. The principal constituents of O. tonduzii leaf oil were the monoterpenes α-pinene (41.4%) and pinene (25.1%) and the sesquiterpenes α-humulene (6.9%), β-caryophyllene (5.8%), and germacrene D (3.8%). O. tonduzii leaf oil was notably cytotoxic on MCF-7, MDA-MB-231, MDA-MB-468, and UACC-257 cells in vitro. The major essential oil components showed cytotoxic activities comparable to doxorubicin ( LC50, 20–70 μg/mL).

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Chemical Composition of the Leaf Essential Oil of Casimiroa Edulis La Llave & Lex. (Rutaceae) from Monteverde, Costa Rica

Natural Product Communications ◽

10.1177/1934578x0900400322 ◽

2009 ◽

Vol 4 (3) ◽

pp. 1934578X0900400 ◽

Cited By ~ 2

Author(s):

Sarah L. Miller ◽

William A. Haber ◽

William N. Setzer

Keyword(s):

Costa Rica ◽

Chemical Composition ◽

Essential Oil ◽

Traditional Use ◽

Sesquiterpene Hydrocarbons ◽

Germacrene D ◽

Casimiroa Edulis ◽

Leaf Oil ◽

Leaf Essential Oil

The leaf essential oil of Casimiroa edulis (Rutaceae), collected from Monteverde, Costa Rica, has been obtained by hydrodistillation and analyzed by GC-MS. The leaf oil was dominated by sesquiterpene hydrocarbons, predominately germacrene D (16-22%) and ( E)-caryophyllene (16-17%), consistent with the traditional use of this plant as a sedative, sleep inducer and hypotensive.

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