Constituents of essential oil

Litsea baviensis Lecomte, which belongs to the family Lauraceae. The plant was found in China, Thailand and Vietnam (Ban, 2003; Wu et al., 2008). In Vietnam, this species has been recorded in Lao Cai, Son La, Ha Noi, Ninh Binh, Thanh Hoa, Nghe An, Khanh Hoa provinces (Vietnamese as Bời lời Ba Vì). Notably, in the present study, this plant also was added distribution area in Vietnam (Dak Nong province).

10p dianmotminh02 03-05-2024 4 1   Download

The essential oils were also tested for their antioxidant, anti-imflammatory, antimicrobial and cytotoxic activities. The HD essential oil sample showed inhibitory activity against 6/8 tested microorganisms, i.e., Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli, Bacillus subtillis, Candida albicans, and Saccharomyces cerevisiae. The MHD and EHD exhibited the inhibitory activity against three strains E. coli, A. niger and F. oxysporum. The UHD inhibited E. coli and F. oxysporum.

9p dianmotminh02 03-05-2024 8 1   Download

Zanthoxylum avicennae (Lam.) DC. is a medicinal and aromatic plant, belong to the Zanthoxylum genus. The plant is found in some Asian contries, including Viet Nam. The various parts of this plant has been used to medicine and contain essential oils. In this study, the essential oil of Z. avicennae was isolated.

11p vidudley 20-02-2023 8 2   Download

The genus Taxus (yews) is the largest genus of the family Taxaceae. It comprises about 24 species with 55 varieties distributed mainly in Asia, Europe, North Africa, and North America. In addition to the taxane diterpenoids and the cancer drug taxol, its species contain many essential oils with actual or potential biological activity. This review covers the chemical constituents as well as biological activities of these oils that have been studied in fourteen countries over 46 years (1975–2021).

26p lyhuyenthu 31-01-2023 9 2   Download

The essential oils from the needles and branch of the Abies delaveyi subsp. fansipanensis was collected in Hoang Lien Natural Park, Lao Cai province and was obtained by steam distilation and the yields of essential oils were 0.27% and 0.08% from air-dry material. By the using GC/MS analysis, there are 44 and 52 constituents from needles and branch were identified and accounting 97.75% and 96.86% essential oil.

6p meyerowitz 25-12-2021 18 2   Download

Bacterial infections in medical devices and drug resistance of bacteria can cause chaos in the world due to loss of lives in addition to the cost of device revisions, quarantine, disinfection of infected areas, and patient treatment. Antibacterial coatings of essential oils on medical devices can prevent bacterial attachment and reduce costs. Linalool is an antibacterial constituent of essential oils.

12p tudichquannguyet 29-11-2021 11 2   Download

Laggera tomentosa Sch. Bip. ex Oliv. et Hiern (Asteraceae), an endemic Ethiopian medicinal plant, is traditionally used to treat various ailments. Previously, the chemical constituents of the essential oil (EO) of its leaves and inflorescence were documented. However, no data about the chemical compositions of other parts of the EOs of the plant have been reported to date. Moreover, there are no previous biological activity reports on any parts of the EOs of this plant.

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The volatile components of essential oil (EO), SPME, and SPME of solvent extracts (n-hexane, methanol, and water) obtained from fresh Serapias orientalis subsp. orientalis(Soo) were analyzed by GC-FID/MS. EO of Soo gave 11 compounds in the percentage of 99.97%; capronaldehyde (37.01%), 2-(E)-hexenal (23.19%), and n-nonanal (19.05%) were found to be major constituents. SPME GC-FID/MS analyses of fresh plant and solvent extracts of Soo revealed 7, 12, 7, and 4 compounds within the range of 99.7% to 99.9%. Limonene (76.5%, 41.7%, and 61.

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The essential oils (EOs) constituents have trade importance due to their bioactivities. In this research, the essential oil of the roots of Chrysopogon zizanioides (L.) Roberty cultivated in Giresun was obtained by hydrodistillation. Then, the chemical composition and biological activities of Chrysopogon zizanioides root essential oil (CEO) were studied. Thirty compounds were identified by gas chromatography-mass spectrometry (GC-MS) and the major compounds were determined as isobutyl-angelate (11.15%), α-muurolene (10.56%), α-cedrene (8.42%), α-patchoulene (8.

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: This paper includes the result of the first study of the chemical composition, antioxidant, antiinflammatory, and antidiabetic activities of the essential oils of Glebionis coronaria (L.) Cass. ex Spach and Glebionis segetum (L.) Fourr. from Turkey. In the current study, nine and twenty-eight constituents were determined in the essential oils of aerial parts of G. coronaria (GCE) (92.1%) and G. segetum (GSE) (90.0%), respectively. The main components were capillin (65.9%) in GCE, capillene (53.4%) in GSE. The essential oil compositions were evaluated and compared with previous researches.

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The research objectives of the thesis: Isolate and determine the chemical structure of compounds from C. candicans and C. macrophylla species collected in Vietnam. Assessment of toxic activity on some cancer cell lines: liver (Hep-G2), lung (Lu-1) and breast (MCF-7) of isolated clean compounds. Researching the chemical composition of C. candicans and C. macrophylla essential oils

29p extraenglish 24-05-2021 13 3   Download

The essential oil from the leaves of Callicarpa arborea Roxb. growing wild in Viet Nam, was obtained by hydrodistillation and analyzed by gas chromatography – mass spectrometry. The major constituents of leaves of C. arborea were β-selinene (23.9 %), arturmerone (17.5 %) and α-copaene (8.9 %), with lesser concentrations of caryophyllene oxide (4.9 %) and ar-turmerol (3.9 %). The chemical composition of this essential oil sample is being reported for the first time.

8p nguaconbaynhay11 01-04-2021 15 2   Download

Essential oil or also known as ethreal oil is a concentrated, hydrophobic liquid that contains hundreds of aromatic compounds, organic constituents, including hormones, vitamins and other natural elements. Jasmine essential oil has a sweet and floral aroma that aids the body as anti-depressant and aphrodisiac properties. India is one of the centres of origin of jasmine. The genus Jasminum is reported to comprise of 500 species (Bailey, 1958).

8p trinhthamhodang1218 26-02-2021 9 1   Download

Twenty-seven constituents were identified by using GC/MS, representing 99.57% of the rhizome oil of Distichochlamys benenica. The major constituents of the essential oil are 1,8-cineole (54.39%), β-pinene (7.50%), (E)-citral (7.26%), and (Z)-citral (6.79%). The rhizome essential oil has antiacetylcholinesterase activity with an IC50 value of 136.63  2.70 g/mL.

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The essential oil extracted from the dried flower buds of cloves is used for acne, warts, scars and parasites. Research has shown that clove oil is an effective mosquito repellent (Trongtokit et al., 2005). Culinary spices and herbs contain a wide variety of active phytochemicals including flavonoids, terpenes, polyphenols, curcumins, coumarins (Fabio et al., 2003). The aim of this research is to determine the phytochemical constituents and antimicrobial effect of Syzygium aromaticum oil and crude extract.

11p nguaconbaynhay8 13-10-2020 23 2   Download

Coriander is an annual seed spice crop, which belongs to family Apiaceae. It is native of Mediterranean region. The aromatic characters of plants are due to presence of linalool compound in essential oil of seeds. The green leaves of coriander are used in salads and are a good source of vitamin A and vitamin C. Major active constituents of coriander essential oils and fatty oil. The essential oil content of the weight of ripe and a dried fruit of coriander varies between 0.03 and 2.6% and the content of fatty oil varies between 9.9 and 27.7%.

7p angicungduoc6 20-07-2020 9 1   Download

In this study, the antimicrobial activity and phytochemical constituents of neem leaves and lemon grass oil extracts were evaluated. Oil extracts of neem leaves and lemon grass were obtained by solvent extraction method using hexane and ethanol.

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In order to develop new larvicidal agents derived from phytochemicals, the larvicidal activity of fifty molecules that are constituent of essential oils was evaluated against Culex quinquefasciatus Say.

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This research work was executed to determine chemical composition, anti-oxidant and anti-microbial potential of the essential oils extracted from the leaves and stem of Daphne mucronata Royle. From leaves and stem oils fifty-one different constituents were identified through GC/MS examination.

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Research paper on chemical composition of essential oil of leaves and willow tree Bailloni was obtained in Phong Nha - Ke Bang National Park in March 2007 to assess the content of essential oils according to fresh materials; Main constituents of essential oil of leaves and branches of the Bailoni willow species.

4p ketaucho 24-10-2019 22 1   Download