scholarly journals Constituents and Antimicrobial Activity of the Essential Oils from Flower, Leaf and Stem of Helichrysum armenium

2012 ◽  
Vol 7 (5) ◽  
pp. 1934578X1200700 ◽  
Author(s):  
Khodam-Ali Oji ◽  
Ali Shafaghat
Keyword(s):  
Essential Oils ◽  
Chemical Constituents ◽  
Antimicrobial Effect ◽  
Bornyl Acetate ◽  
Gram Negative Bacteria ◽  
Caryophyllene Oxide ◽  
Gram Negative ◽  
Leaf Oil ◽  
Moderate Effect ◽  
Main Components

The chemical constituents from the flower, leaf and stem of Helichrysum armenium DC. (Asteraceae) growing in Iran were obtained by hydrodistillation and analyzed by GC and GC/MS. The oil of flower was characterized by higher amount of limonene (21.2%), α-cadinol (18.2%), borneol (11.9%), δ-cadinene (9.0%), bornyl acetate (8.0%) and α-humulene (7.3%). Twenty one constituents representing 96.2% of the chromatographical leaf oil were identified of which limonene (29.2%), α- pinene (14.4%), caryophyllene oxide (6.5%), α-gurjunene (6.3%), bornyl acetate (5.5%) and torreyol (5.2%) were the major components. The main components of the stem oil were limonene (23.6%), α-pinene (13.4%), spathulenol (6.4%), α-gurjunene (6.3%), caryophyllene oxide (5.3%), bornyl acetate (5.2%), β-cubebene (4.8%) and δ-cadinene (4.3%). The composition of the oils is different, although the most abundant components are identical in leaf oil (96.2%). The antimicrobial effect of flower, leaf and stem essential oils from Helichrysum armenium was studied according to the agar diffusion cup method. The essential oils had a moderate effect on the Gram-positive and Gram-negative bacteria and had a substantial fungicidal effect on the fungi under study.

scholarly journals Antimicrobial Activity and Chemical Constituents of the Essential Oils from Flower, Leaf and Stem of Gypsophila bicolor from Iran

2011 ◽  
Vol 6 (2) ◽  
pp. 1934578X1100600
Author(s):  
Ali Shafaghat ◽  
Masoud Shafaghatlonbar
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oils ◽  
Chemical Constituents ◽  
Substantial Effect ◽  
Gram Negative Bacteria ◽  
Gram Negative ◽  
Germacrene D ◽  
Leaf Oil ◽  
Moderate Effect ◽  
Main Components

The volatile constituents from flower, leaf and stem of Gypsophila bicolor growing in Iran were obtained by hydrodistillation and analyzed by GC and GC/MS. The flower oil was characterized by high amounts of germacrene-D (21.2%), p-cymene (20.6%), bicyclogermacrene (17.6%), γ-dodecadienolactone (13.7%) and terpinolene (9.4%). Twenty-four constituents representing 97.4% of the leaf oil were identified of which germacrene-D (23.4%), terpinolene (14.5%), bicyclogermacrene (7.5%), γ-dodecadienolactone (6.8%), p-cymene (6.7%) and cis-β-ocimene (6.3%) were major components. The main components of the stem oil were γ-dodecadienolactone (28.5%), bicyclogermacrene (14.8%), germacrene-D (12.6%), p-cymene (12.5%), terpinolene (11.6%) and trans-β-ocimene (4.2%). The antimicrobial effects of flower, leaf and stem essential oils from Gypsophila bicolor were studied according to the agar diffusion cup method. The essential oils had a moderate effect on the Gram-positive and Gram-negative bacteria, but had a substantial effect on the fungi studied.

Composition and Antibacterial Activity of Essential Oils of Artemisia Fragrans Willd. Leaves and Roots from Iran

2009 ◽  
Vol 4 (2) ◽  
pp. 1934578X0900400 ◽  
Author(s):  
Ali Shafaghat ◽  
Yavar Noormohammadi ◽  
Mohammad Zaifizadeh
Keyword(s):  
Antibacterial Activity ◽  
Essential Oils ◽  
Diffusion Method ◽  
Gram Negative Bacteria ◽  
Gram Negative ◽  
Leaf Oil ◽  
Agar Diffusion Method ◽  
Leaves And Roots ◽  
Main Components ◽  
Total Oil

Hydrodistillation of leaves and roots of Artemisia fragrans Willd. (Asteraceae) yielded 0.9% and 0.1 %(v/w) essential oils, respectively. GC/MS analysis allowed identification of 19 components, which made up 91.1% of the total oil from the leaves, while only 9 compounds (93.8%) were identified in the roots. The main components of the leaf oil were chrysanthenon (23.8%), 1, 8-cineole (23.7%), β-caryophyllene (9.6%), p-cymene (7. 7%), filifolide-A (5.7%) and filifolone (5.7%). In the root oil, the main constituents were camphor (67.0%) and camphene (16.9%). Antibacterial activity was tested against Grampositive and Gram-negative bacteria using the agar diffusion method. Activity was observed against two Gram-positive and one Gram- negative bacteria.

scholarly journals Essential Oils of Alpinia Rafflesiana and Their Antimicrobial Activities

2013 ◽  
Vol 8 (9) ◽  
pp. 1934578X1300800 ◽  
Author(s):  
Shariha Jusoh ◽  
Hasnah Mohd Sirat ◽  
Farediah Ahmad
Keyword(s):  
Essential Oils ◽  
Antimicrobial Activities ◽  
Caryophyllene Oxide ◽  
Capillary Gc ◽  
E Coli ◽  
Leaf Oil ◽  
Main Components ◽  
Fruit Oil ◽  
Antimicrobial Assay

The essential oils from the leaves, pseudostems, rhizomes and fruits of Alpinia rafflesiana were isolated by hydrodistillation. The oils were analysed by capillary GC and GC-MS. The most abundant components in the leaf oil were trans-caryophyllene (32.61%), caryophyllene oxide (8.67%), (2 E,6 Z)-farnesol (4.91%) and α-terpineol (4.25%), while 1,8-cineole (32.25%), myrcene (13.63%), α-terpineol (9.90%) and trans-caryophyllene (9.80%) were the main constituents in the pseudostem oil. The rhizome constituted of tetracosane (42.61%), τ-cadinol (7.46%), α-terpineol (6.71%) were the major components, whereas tetracosane (13.39%), (2 E,6 E)-farnesol (7.31%), α-terpineol (8.51%) and caryophyllene oxide (8.05%) were the main components in the fruit oil. Antimicrobial assay revealed that all the essential oils showed moderate to weak inhibition against the tested microorganisms. The leaf oil was the most active and inhibited both S. aureus and E. coli with MIC values of 7.81 μg/mL and 15.6 μg/mL, respectively.

scholarly journals Composition of the Essential Oils and Antibacterial Activities of Hymenocrater yazdianus, Stachys obtusicrena and Nepeta asterotricha Three Labiatae Herbs Growing Wild in Iran

2012 ◽  
Vol 7 (1) ◽  
pp. 1934578X1200700 ◽  
Author(s):  
Shiva Masoudi ◽  
Abdolhossein Rustaiyan ◽  
Razieh Mohebat ◽  
Mohammad Hossein Mosslemin
Keyword(s):  
Essential Oils ◽  
Antibacterial Activities ◽  
Gram Negative Bacteria ◽  
Inhibitory Zone ◽  
Growth Inhibitory ◽  
Germacrene D ◽  
Leaf Oil ◽  
Main Components ◽  
Total Oil ◽  
Stem Leaf

Water-distilled essential oils from leaves of Hymenocrater yazdianus Rech.f., flowers of Stachys obtusicrena Boiss., and stems and flowers of Nepeta asterotricha Rech.f, which are endemic to Iran, were analyzed by GC and GC/MS. Fifty-five components of the leaf oil of H. yazdianus were characterized, representing 95.1% of the total components detected. The major constituents were identified as 1,8-cineole (17.6%), β-caryophyllene (13.9%), α-pinene (10.6%) and caryophyllene oxide (10.4%). Germacrene-D (37.5%) and α-bisabolol (23.5%) were the main components among the twenty constituents characterized in the flower oil of S. obtusicrena, representing 90.8% of the total components detected. Thirty-five compounds representing 93.0% of the stem oil of N. asterotrica were identified among which terpinen-4-ol (22.8%) and γ-terpinene (14.1%) were the major ones. The flower oil of the species was characterized by higher amounts of terpinen-4-ol (24.8%), 4aα, 7aβ-nepetalactone (18.2%) and 1,8-cineole (11.6%) among the thirty-three components comprising 98.5% of the total oil detected. The antibacterial activity of the stem, leaf and flower oils of Hymenocrater yazdianus, Stachys obtusicrena and Nepeta asterotricha against seven Gram-positive and Gram-negative bacteria were determined using the MIC method. The growth inhibitory zone (mm) was also measured.

scholarly journals Zingiber vuquangensis and Z. castaneum: Two Newly Discovered Species from Vietnam and Their Essential Oil Constituents

2018 ◽  
Vol 13 (6) ◽  
pp. 1934578X1801300 ◽  
Author(s):  
Le T. Huong ◽  
Trinh T. Huong ◽  
Nguyen T. T. Huong ◽  
Dao T. M. Chau ◽  
Ly N. Sam ◽  
...  
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
National Park ◽  
Chemical Constituents ◽  
The Other ◽  
Bornyl Acetate ◽  
First Report ◽  
Antimicrobial Effects ◽  
Leaf Oil ◽  
Fruit Oil

The chemical constituents of essential oils obtained by hydrodistillation from Zingiber vuquangensis Lý N.S., Lê T.H., Trịnh T. H., Nguyễn V.H., Đỗ N.Đ. and Zingiber castaneum Škorničk. & Q.B. Nguyễn collected from Vu Quang National Park, Hà Tĩnh Province, Vietnam were analysed by GC and GC-MS. β-Pinene (24.7% and 26.1%) and β-caryophyllene (12.3% and 13.9%) were the main constituents in the leaf oil and stem oil of Zingiber vuquangensis. On the other hand the root oil contained bornyl acetate (20.9%), zerumbone (14.1%) and α-humulene (9.6%) while β-pinene (19.6%), 1,8-cineole (15.6%), α-pinene (10.3%) and β-caryophyllene (10.4%) were the significant compounds of the fruit oil. The leaf oil Zingiber castaneum was dominated by β-pinene (30.6%), α-pinene (9.5%), β-caryophyllene (9.4%) and bicycloelemene (9.1%). The compounds occurring in higher quantity in the stem oil were β-caryophyllene (14.7%), δ-cadinene (9.8%), bicycloelemene (8.4%) and α-cubebene (7.8%). However, camphene (15.1%), 1,8-cineole (13.6%), linalool (11.3%) and δ-3-carene (8.5%) were the main compounds of the root oil while ( E)-nerolidol (23.2%), ( Z)-9-octadecenamide (17.3%) and β-caryophyllene (10.8%) were the main constituents of the fruit oil. The essential oil did not exhibit noticeable antimicrobial effects. This is the first report on the volatile compositions of Z. vuquangensis and Z. castaneum.

scholarly journals Essential oils of leaves and rhizomes of Kaempferia galanga Linn.

2013 ◽  
pp. 65-76
Author(s):  
Md Nazrul Islam Bhuiyan ◽  
Jaripa Begum ◽  
MN Anwar
Keyword(s):  
Gas Chromatography ◽  
Essential Oils ◽  
Ethyl Ester ◽  
Mass Spectroscopy ◽  
Caryophyllene Oxide ◽  
Kaempferia Galanga ◽  
Propenoic Acid ◽  
Leaf Oil ◽  
Gas Chromatography Mass Spectroscopy ◽  
Main Components

Kaempferia galanga Linn. leaf and rhizome oils, obtained by hydrodistillation, were analyzed by gas chromatography mass spectroscopy (GC-MS). One hundred and eight components were identified in the leaf oil. The major components were linoleoyl chloride (21.42%), caryophyllene oxide (11.75%), cubenol (9.66%) and caryophyllene (5.60%). Eighty one components were identified in rhizome oil with the main components being 2-propenoic acid, 3-(4-methoxyphenyl),-ethyl ester (63.36%), ethyl cinnamate (6.31%), 4-cyclooctene -1-methanol (4.61%), caryophyllene oxide (4.37%) and limonene (3.22%). The compositions of both oils varied qualitatively and quantitatively. DOI: http://dx.doi.org/10.3329/cujbs.v3i1.13407 The Chittagong Univ. J. B. Sci.,Vol. 3(1&2):65-76, 2008

scholarly journals Potential Antimicrobial and Chemical Composition of Essential Oils from Piper caldense Tissues

2017 ◽  
Vol 60 (3) ◽  
Author(s):  
Dayane Silva Rocha ◽  
Janete Magali Da Silva ◽  
Daniela Maria Do Amaral Ferraz Navarro ◽  
Claúdio Augusto Gomes Camara ◽  
Camila Soledade De Lira ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Biological Activity ◽  
Chemical Composition ◽  
Essential Oils ◽  
Chemical Constituents ◽  
Gram Negative Bacteria ◽  
Gram Negative ◽  
Gram Positive Bacteria ◽  
Major Chemical ◽  
Antibacterial Potential

The essential oils from leaves, stems and roots of Piper caldense were analyzed by GC-MS. The antibacterial potential of the oils was evaluated against gram-negative bacteria and gram-positive bacteria. The major chemical constituents that were identified from various parts of this plant were α-cardinal, α-muurolol, tujopsan-2-β-ol and δ-cadiene in the leaves, valencene, pentadecane, elina-3,7-11-dieno α-terpineol in the roots and terpine-4-ol, α-terpineol, α-cadinol 2-β-ol in the stems. Tissue oils showed antibacterial activity against the bacteria tested except for Enterococcus faecalis. This is the first report of the biological activity and chemical composition essential oil of P. caldense.

scholarly journals ESSENTIAL OIL COMPOSITION OF TWO SPECIES OF SCUTELLARIA AERIAL PARTS

2021 ◽  
pp. 139-144
Author(s):  
Abdurashid Musakhonovich Karimov ◽  
Khairulla Mamadievich Bobakulov ◽  
Yulia Vladimirovna Ostroushko ◽  
Erkin Khozhiakbarovich Botirov ◽  
Azimjon Akparalievich Mamadrakhimov ◽  
...  
Keyword(s):  
Essential Oils ◽  
Folk Medicine ◽  
Antimicrobial Properties ◽  
Essential Oil Composition ◽  
Caryophyllene Oxide ◽  
Oil Composition ◽  
Aerial Parts ◽  
Moderate Effect ◽  
Main Components ◽  
First Time

The chemical composition of essential oils obtained by hydrodistillation method from two plants of the genus Scutellaria, grown in Uzbekistan and used in folk medicine were comparatively investigated by GC/MS and FID. Overall individually thirty three constituents were identified in both of aerial parts of S. adenostegia and S. comosa essential oils, representing 94.4 and 97.0% of the total, respectively. The main components were determined as acetophenone (24.2%), eugenol (12.3%), caryophyllene oxide (8.9%), and β-caryophyllene (7.0%) in the oil of S. adenostegia. β-Caryophyllene (12.5%), phytol (11.4%), linalool (11.1%), acetophenone (10.4%), caryophyllene oxide (6.6%),1-hexanol (5.3%), and (E)-2-hexenal (5.1%) were found as major components in the S. comosa oil. The composition of the oils of S. adenostegia and S. comosa was being reported for the first time. The essential oils of S. adenostegia and S. comosa showed significant antimicrobial properties against Bacillus subtilis, moderate effect against Salmonella enterica and Escherichia coli.

scholarly journals Chemical Composition and Antimicrobial Activity of Daucus aureus Essential Oils from Algeria

2013 ◽  
Vol 8 (6) ◽  
pp. 1934578X1300800
Author(s):  
Nawel Meliani ◽  
Mohammed El Amine Dib ◽  
Nassim Djabou ◽  
Jean Costa ◽  
Hocine Allali ◽  
...  
Keyword(s):  
Essential Oils ◽  
Analytical Techniques ◽  
Antimicrobial Effect ◽  
Volatile Components ◽  
Chemical Compositions ◽  
Caryophyllene Oxide ◽  
Tetradecanoic Acid ◽  
Aerial Parts ◽  
Growing Conditions ◽  
Main Components

The volatile components of Algerian Daucus aureus Desf. were investigated using a combination of analytical techniques. Analyses of essential oils obtained by hydrodistillation from the aerial parts and roots of the plant were performed using capillary GC/RI and GC/MS analysis. Seventy-one compounds were identified, constituting 90.2–96.0% of the total essential oils,. The main components from the aerial parts of the plants were germacrene D (11.3–67.2%), followed by caryophyllene oxide (0.9–9.5%), spathulenol (0.6–8.4%), ( Z)-α-santalol (1.4–6.5%), viridiflorol (0.9–5.8%), cadin-4-en-7-ol (1.5–5.6%), and τ-cadinol (1.2–5.2%). The main components of the essential oils obtained from the roots of the plant were ( Z)-α-santalol (14.1%), caryophyllene oxide (10.6%), spathulenol (9.8%), nonadecane (6.8%), and tetradecanoic acid (5.2%). The intraspecies variations of the chemical compositions of the essential oils from the aerial parts of D. aureus from 14 Algerian sample locations were investigated using statistical analysis. Essential oil samples were clustered into two groups according to their chemical compositions. This chemical variability could be attributed to growing conditions and environmental factors. The essential oils exhibited an interesting antimicrobial effect against the microorganisms tested, with MIC values in the range of 0.125–4.6 mg/mL. It is suggested that the essential oils from D. aureus may be a new potential source of natural antimicrobial compounds that could be applied in the pharmaceutical and food industries.

scholarly journals Chemical Compositions and Antimicrobial Activity of the Essential Oils of Hornstedtia havilandii (Zingiberaceae)

2014 ◽  
Vol 9 (1) ◽  
pp. 1934578X1400900 ◽  
Author(s):  
Siti Ernieyanti Hashim ◽  
Hasnah Mohd Sirat ◽  
Khong Heng Yen
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oils ◽  
Chemical Compositions ◽  
Gram Negative Bacteria ◽  
Gram Positive ◽  
Gram Negative ◽  
Gram Positive Bacteria ◽  
Germacrene D ◽  
Weak Activity ◽  
Main Components

The chemical compositions and antimicrobial activity of the fresh rhizome and flower oils of Hornstedtia havilandii were studied. The components present were analyzed using GC and GC-MS. A total of forty-eight constituents were successfully identified from the flower and rhizome oils, representing 93.4% and 89.6%, respectively. The most abundant components of the flower oil were β-pinene, (19.5%), β-elemene, (10.0%), β-cubebene, (6.2%), α-pinene, (5.6%), γ-cadinene, (4.3%) and germacrene D, (3.3%), while α-copaene, (10.2%), β-selinene, (8.4%), β-elemene, (7.0%), γ-cadinene, (6.9%), β-cubebene, (5.3%) and germacrene D, (5.3%) were found as the main components of the rhizome oil. The essential oils were tested for antimicrobial activity against Gram-positive bacteria, Gram-negative bacteria and yeasts. Both oils showed activity against the Gram-positive bacterium, Staphylococcus aureus, with moderate MIC values of 112.5 μg/mL, however, for Gram-negative bacteria, the flower oil showed weak antimicrobial activity with a MIC value of 225 μg/mL. Only very weak activity was shown against the yeasts Candida albicans and C. glabrata, with MIC values of 900–1800 μg/mL.

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