Chemical composition of essential oils

Syzygium boisianum (Gagnep.) Merr. & L.M.Perry, locally named Tram bois, is widely distributed in primary or secondary forests of Vietnam, Thailand, and China. [6] For the first time, the current report provides information on chemical compositions in essential oil of S. boisianum leaves, collected from the northern part of central Vietnam. The obtained oil was also used to assess its antibacterial effects. The biological potential is highlighted by the molecular docking study.

6p dianmotminh02 03-05-2024 4 1   Download

The biological activities of E. ciliata essential oils (Ec EOs) in Vietnam have yet to be thoroughly studied and have received less attention than other species of genus Elsholtzia in the world. In this study, we evaluated the antioxidant, antimicrobial, and anticancer of Ec EOs and examined their chemical compositions. Fresh leaves of E. ciliata were hydro-distilled to yield essential oil of 0.82% dry weight, respectively.

12p dianmotminh02 03-05-2024 2 1   Download

Magnolia citrata Noot. & Chalermglin was collected in the Central Highlands of Vietnam and examined for its essential oils’ chemical compositions and antimicrobial activities. The essential oils were obtained from the leaves, twigs, and stem barks of M. citrata using hydrodistillation, then analyzed using Gas Chromatography-Mass Spectrometry (GC-MS) and evaluated for antimicrobial activities.

10p dianmotminh02 03-05-2024 1 1   Download

The needle and cone essential oils of Pinus fenzeliana Hand-Mazz. (Pinus kwangtungensis Chun & Tsiang) collected in Hang Kia-Pa Co Nature Reserve, Hoa Binh province were obtained by hydrodistillation and analyzed by a combination of GC-FID, GC-MS and NMR (Gas Chromatography/Gas Chromatography-Mass Spectrometry/Nuclear Magnetic Resonance (NMR) analysis).

9p dianmotminh02 03-05-2024 3 2   Download

Rosemary was used popularly in food industry; perfumery, cosmetic and pharmaceutical production. The content and chemical composition of rosemary essential oil were changed by cultivating condition aslo by content and type of fertilizer applied.

7p vialfrednobel 21-12-2023 2 2   Download

Sausage is one of the well-liked foodstuffs in many areas. However, its quality is vulnerable to deteriorate owing to the lipid oxidation and microbial contamination. This research aimed to study the influence of thyme and clove essential oils (EOs) with or without nitrite on the chemical composition, microbial growth, and lipid oxidation rate in sausage during frozen storage-18°C for three months.

10p viisac 23-09-2023 2 1   Download

Piper betle (Piperaceae) is one of the essential thermophilic plants in Asia zone, widely cultivated in India, Sri Lanka, Malaysia, Thailand, Taiwan, and other Southeast Asian countries (Karak S et al., 2018). The present study aimed to determine the chemical composition and anti-acetylcholinesterase, nitric oxide suppressing activities of Piper betle leaves oil collected from Quang Nam-Da Nang.

6p viberkshire 09-08-2023 7 4   Download

Essential oils of Magnolia balansae A. DC. growing wild in Son La (leaf, twig and fruit) and Phu Tho (fruit) provinces of Vietnam were obtained by hydrodistillation and were analyzed using GC/MS-FID. From 30 to 49 compounds were identified accounting for 66.1–80.0% of the oils.

11p vicaptainmarvel 21-04-2023 7 2   Download

In Vietnam, there was a report in 1996 on the chemical composition of the essential oils from the leaves and flowers of two cultivars of A. sinensis. Unfortunately, at that time, the authors were not able to investigate the root oil of these plants (Nguyen Xuan Dung et al., 1996). In the present study, we report on the chemical composition and antimicrobial activity of essential oils obtained from the roots, flowers, fruits, and a mixture of leaves and stems of A. sinensis cultivated in Hung Yen province, Vietnam.

9p vicaptainmarvel 21-04-2023 4 3   Download

The essential oils from the leaves and stems of Atalantia buxifolia in Vietnam were obtained by hydrodistillation and analysed by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS).

9p vineville 08-02-2023 1 1   Download

The study presents synthesizing natural floor cleaner from soapberry, essential oil of cinnamon, coriander, and lemongrass. Different composite ratios are given and surveyed through user opinions to determine the optimal ratio.

10p vineville 08-02-2023 1 1   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 8 1   Download

In this study, we investigated the phenolic profile of L. orientalis. using HPLC, and 5 compounds from BL-1, (juglone, naringenin, rosmarinic acid, vanillic acid, echinacoside) and 4 compounds from BL-2 (juglone, apigenin-7-glucoside, naringenin, vanillic acid) were reported for the first time. A total of six new flavonoids (juglone, naringenin, rosmarinic acid, echinacoside, vanillic acid, and apigenin-7-glucoside) were identified from BL’s by HPLC analysis.

9p lyhuyenthu 31-01-2023 7 2   Download

In the study "Yield and oil composition of peppermint cultivars grown in the Isparta climate of Turkey", Citaro, Tokat CL-8, and Chocolate varieties had high menthol contents and were within the same chemical group. Varieties reacted differently to years and harvesting seasons, including summer and autumn. The menthol content of Citaro and Tokat CL-8 cultivars was higher in the fall harvest compared to the summer harvest.

11p lyhuyenthu 31-01-2023 4 2   Download

The chemical composition, antioxidant properties and antibacterial activities of different extracts (water, ethanol, acetate ethyl and hexane) and essential oil from Platycladus orientalis leaves were analysed in this study. The essential oil was extracted by hydrodistillation, and its chemical composition was determined by gas chromatography coupled to mass spectrometry (GC-MS).

11p lyhuyenthu 31-01-2023 8 2   Download

The objective of the study was to investigate the chemical composition and biological activity of Cinnamomum burmannii essential oil in Cao Bang province. Use the steam distillation method to extract essential oils.

6p viharry 15-12-2022 4 3   Download

The objectives of the study was to investigate the chemical compositionand biological activity of Cinnamomum burmannii essential oil inCaoBangprovince. Use steam distillation method to extract essential oils. The chemical composition of essential oils was determined by Gas chromatography-mass spectrometry.

11p viharry 15-12-2022 11 3   Download

Dengue is a mosquito-borne viral disease that has caused millions of dengue virus infections per year in the world. Mosquito repellent is an effective way to prevent mosquito bites and the spread of mosquito-borne disease. In this study, we extracted essential oil from the bark of Cinnamomum cassia collected in Viet Nam and analyzed its chemical composition.

5p visherylsandber 28-06-2022 13 3   Download

The results indicated that essential oil obtained from catmint and lemon catnip showed significant variability in their content and chemical composition. Percentage of essential oil content of catmint 1st and 2nd cuts during 1st season were 0.107% and 0.253% whereas recorded for the 2nd season 0.117% and 0.247%, respectively.

5p schindler 30-12-2021 4 0   Download

To the best of our knowledge, no study has investigated replacing chemical fertilizers with fish effluents in marjorana production in a combined aquaculture agriculture system. The main objective of this study was to investigate the effect of Nile tilapia (Oreochromis niloticus) fish effluent water on the growth parameters, herbage yield, and essential oil composition of sweet marjoram.

7p schindler 30-12-2021 14 0   Download