Essential oils
-
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 2 2 Download
-
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
-
Tài liệu "Chiết xuất thực vật trong dinh dưỡng động vật: Các khái niệm tự nhiên để tối ưu hóa sức khỏe đường ruột và năng suất chăn nuôi" phần 1 trình bày các nội dung chính sau: Tinh dầu thiết yếu (essential oils) - sinh hóa học, sự sản xuất và sự ứng dụng Á, Mathé; Chất bổ sung chiết xuất thực vật đối với gà và heo con: Cơ chế và ứng dụng W. Windisch, E. Rohrer, K. Schedle; Ảnh hưởng của chất chiết thực vật trên hệ miễn dịch của gia súc, gia cầm T. J. Applegate;... Mời các bạn cùng tham khảo để nắm nội dung chi tiết.
128p vicharlie 23-03-2023 13 4 Download
-
Thermostable and highly water-soluble polymers are essential for polymer flooding — one of the most effective methods used in the enhanced oil recovery (EOR) in hightemperature (HT) offshore reservoirs. In this research, the copolymerization reaction of acrylamide (AM) and N-vinylpyrrolidone (NVP) monomers were performed via a freeradical mechanism induced by gamma-rays (γ-rays) irradiation.
79p viabigailjohnson 10-06-2022 11 3 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 24 2 Download
-
Researching objectives: Describing some biological characteristics and distribution of Zingiber and Hedychium species from north-central Vietnam; determining the essential oil chemical composition; antimicrobial and antimosquito larvae activities of essential oils of some Zingiber and Hedychium species from north-central Vietnam.
27p beloveinhouse01 15-08-2021 22 5 Download
-
By reviewing worldwide literature, this paper aimed to systematically collate available information about the species Cunninghamia lanceolata. Based on the findings of the review, including the species’ floral characteristics; updated distribution; historical knowledge and heritage; growth and factors influencing its forests; soil nutrition and microbes; carbon storage; wood; and chemicals and essential oils, we have identified issues for consideration regarding the use of this species for big timber production in Vietnam.
11p chauchaungayxua12 09-07-2021 7 1 Download
-
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 15 3 Download
-
Objectives: Assess the diversity of essential oil-bearing plants and the chemical composition of essential oils extracted from some oil-bearing species in Vu Quang National Park, Ha Tinh province
28p prisonbreak123 21-05-2021 23 2 Download
-
Researching objectives: Evaluating the diversity and using values of essential oil plants at Ben En National Park, Thanh Hoa province; determining the content and composition of essential oils of some plant species; determinating the anti-mosquito and anti-microbial activities of essential oils of Zingiber zerumbet (L.) Smith.
27p capheviahe27 23-02-2021 29 3 Download
-
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 capheviahe26 25-01-2021 31 3 Download
-
To identify species, biological traits, chemical composition, and bioactive activities of essential oil and to develop propagation technical process using tissue culture techniques from shoot bud cutting to contribute to the conservation and development of genetic sources of native ginger plants in Bac Kan.
27p trinhthamhodang7 31-08-2020 42 1 Download
-
The present study was conducted to evaluate the shelf- life of paneer wrapped with oregano essential oil treated starch and carboxymethyl cellulose (CMC) based edible packaging film. The edible film was prepared by adding starch (5g), carboxymethyl cellulose (15 % W/W starch) in distilled water (100mL) and glycerol (40ml/100g starch). Physicochemical, microbiological and sensory properties at (4±1°C) till spoilage was evaluated for paneer samples.
9p nguaconbaynhay7 15-08-2020 19 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.
8p lucastanguyen 01-06-2020 38 4 Download
-
Natural precious products such as aroma compounds, essential oils, and bio-activated materials are usually extracted from about 30,000 botanical species. These extracts are often high competitive market due to their small content (less than 1 %) in plants and high purification cost. Thus, development of a modeling for the optimization of the crude oil extraction is highly paid attention. In this work, a modeling of Vietnam lemongrass oil extraction using steam distillation is developed and the optimization of the process parameters is performed using response surface methodology (RSM).
6p abcxyz123_02 03-03-2020 30 1 Download
-
Salicylaldehyde has many applications as an intermediate in chemical industries. Genus Filipendula is a potential source of salicycldehyde. Essential oils are prescribed for a variety of health problems by traditional systems of medicine, all over the world. In present study, leaf essential oil composition of Filipendula vestita (Wall. Ex G. Don) Maxim. (Family: Rosaceae) from Uttrakhand, India was analyzed using gas chromatography (GC-FID) and gas chromatography-mass spectrometry (GC-MS) methods.
5p abcxyz123_02 03-03-2020 19 1 Download
-
Bài viết trình bày hàm lượng tinh dầu trong lá của loài na (Annona Squamosa L.) và bình bát (Annona Reticlata L.) ở Việt Nam bằng phương pháp sắc ký khí phổi phổ liên hợp. Mởi các bạn cùng tham khảo bài viết để nắm chi tiết nội dung nghiên cứu.
5p ketaucho 24-10-2019 16 1 Download
-
Researching objectives: Evaluating the diversity and using values of essential oil plants at Ben En National Park, Thanh Hoa province. Determining the content and composition of essential oils of some plant species. Determinating the anti-mosquito and anti-microbial activities of essential oils of Zingiber zerumbet (L.) Smith.
27p xacxuoc4321 08-07-2019 34 3 Download
-
4-Amino-3-(2-methoxy-4-propylphenoxymethylen)-(1H)-1,2,4-triazole-5-thione was prepared from eugenol in Ocimum Sanetum L. essential oil. A series of 7 imines were synthesized from these key compounds by condensing it with different aromatic aldehydes. The structures of these imines were confirmed by EI MS, IR and NMR spectroscopy, in many cases 2D NMR spectra are also used.
5p uocvong04 24-09-2015 30 3 Download
-
Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Suppression of neutrophil accumulation in mice by cutaneous application of geranium essential oil...
11p thulanh27 13-12-2011 51 2 Download