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Study on chemical constituents
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In addition, their inhibitory activity on NO production and cytotoxic effects against human embryonic kidney cells (HEK-293A) and human hepatocellular carcinoma (HepG2) were evaluated. This is the first study of the phytochemical investigation of P. ginseng sprouts cultivated in Vietnam and ginseng sprouts also contained the same main active ginsenosides as in the 4–6-year old roots.
7p
dianmotminh02
03-05-2024
4
1
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Phytochemical study on the leaves of Fissistigma balansae led to the isolation of one new sesquiterpene glycoside, (3S,6E)-3-O-β-D-glucopyranosyl-8-hydroxy-3,7,11-trimethyldodeca-1,6,10-triene, and six known compounds, aromandendrane-4β,10α-diol, phloridzosid, astragalin, isoquercitrin, and rutin, acanthoside B. Their chemical structures were identified by HR-ESI-MS and NMR (1D and 2D) spectra. This is the first report of these compounds from F. balansae.
5p
dianmotminh02
03-05-2024
5
1
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Ixeris dentata (Thunb. ex Thunb.) Nakai (family Asteraceae) a plant widely distributed in Viet Nam, is a perennial herb that grows to a height of 0.5 m. It has been used as a medicinal herb medicine since ancient times for the treatment of calculi, dyspepsia, indigestion, pneumonia, hepatitis, contusion, and tumors in Northeast Asia.
8p
viannee
02-08-2023
8
3
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Alchornea is a genus of plants in the family Euphorbiaceae. It is widely distributed in tropical and subtropical regions of Africa, South Asia, Australia, and Latin America. Many species of the genus Alchornea have been used in traditional medicine in some countries around the world. Therefore, there have been many studies focusing on the chemical composition and biological activities of some species of the genus Alchornea.
7p
vidudley
20-02-2023
5
3
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The total methanol extract of whole plants of Anoectochilus roxbughii (Orchidaceae) from Kontum, Vietnam is evaluated to have antibacterial and antioxidant properties. The results indicate that at concentration of 200µg/ml, the extract shows weak activities.
3p
vijaguar
16-11-2022
6
1
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Peel of vegetables and fruits are of the most important part that helps in protecting the body from diseases, getting rid of the free radicals, as they contain vitamins and minerals which are antioxidant, in addition to phenols. Previous studies have proved the existence of vitamin C, E, and B6 in banana peels, especially vitamin C that can act as an antioxidant.
7p
schindler
30-12-2021
9
0
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Numerous studies of lingzhi, mainly in Vietnam, China, Korea, Japan and United States, have shown its effectiveness in treatment of a very wide range of diseases and symptoms. Lingzhi is the only known source of a group of triterpenes (those similar to steroid hormones), polysaccharides, cumarin, alkaloids... But the study on chemical constituents of lingzhi still has a shortage. In this paper we reported our last investigation on the chemical composition of Ganoderma lucidum, cultivated in Hanoi city.
7p
thienlangso
15-12-2021
13
0
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Ethnobotanical and ethnomedicinal studies have become increasingly recognised as a valuable source of information on the use and possible pharmacological activity of many plant species. There is no study presenting traditional herbal remedies used for kidney diseases in Turkey. The purpose of the paper is to compile herbal remedies used in kidney diseases in Turkey with detailed usage information and chemical constituents.
61p
tudichquannguyet
29-11-2021
8
1
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Ultra-heat-treated (UHT) cow milk is mostly consumed in Turkey. Heating milk can cause some chemical and biochemical changes that affect different components of milk. However, studies on the constituents of UHT milk are scare. In the present study, nitrate and thiocyanate contents of commercial UHT whole cow milk were determined simultaneously by sample stacking-capillary electrophoresis. The best separation of nitrate and thiocyanate ions was performed by reducing the electroosmotic flow at pH 4.0 using 30 mM formic acid and 30 mM sodium sulfate containing separation electrolyte.
7p
tudichquannguyet
29-11-2021
9
1
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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.
10p
tudichquannguyet
29-11-2021
13
1
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The objectives of the thesis: Isolation and determination of chemical structures of the isolated compounds from the leaves of Excoecaria agallocha L. and Excoecaria cochinchinensis Lour.; studied the cytotoxic, anti-inflammatory, and antimicrobial activities of the isolated compounds to find the bioactive compounds.
27p
closefriend09
16-11-2021
24
3
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Study on main chemical constituents of two Gymnema species including Gymnema sylvestre and Gymnema latifolium growing in Vietnam and evaluate the inhibitory effect of α-glucosidase and α-amylase enzymes of isolated compounds.
27p
closefriend09
16-11-2021
18
4
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A chemical study on the propolis of the stingless bee Lisotrigona cacciae collected from Hoa Binh province led to the isolation of four compounds including cycloartenol (1), cochinchinone A (2), α-mangostin (3), and isomangiferolic acid (4). Mangifera indica (Xoài) and Cratoxylum cochinchinense (Thành Ngạnh Nam) were suggested to be the resin sources of the propolis.
4p
nguaconbaynhay12
13-06-2021
10
1
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The objectives of the thesis: The objectives of this study are to investigate the main chemical compositions of Euphorbia hirta L. to search for chemical constituents in relation to biological activities, contributing to further studies to create products for application in the aquarculture industry in particular and for life in general.
31p
extraenglish
24-05-2021
27
3
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Demonstrating the main chemical constituents of Anodendron paniculatum (Roxb.) A.DC. Structural determination of isolated compounds; evaluation of the cytotoxic activities of isolated compounds against human cancer cell lines.
25p
nguathienthan12
23-05-2021
12
3
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The aim of the thesis: Study on chemical constituents of two Knema species including Knema pachycarpa and Knema saxatilis growing in Vietnam. Evaluate cytotoxic and cetylcholinesterase enzyme inhibitory activitiesof isolates to find out bioactive compounds.
25p
extraenglish
24-05-2021
17
3
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Phytochemical data of Sterculia foetida Linn. are scarce. The leaves of Sterculia foetida Linn. collected in Binh Thuan Province were chemically investigated using multiple chromatographic methods. Three compounds, hesperidin (1), kaempferol (2) and ursolic acid (3) were isolated and elucidated. Their chemical structures were elucidated by comparing their spectroscopic data with those in previous studies. These compounds were found for the first time from the leaves of Sterculia foetida Linn. Compounds 1 was obtained for the first time in Sterculia genus.
6p
angicungduoc11
18-04-2021
19
2
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In this study, four flavonoids, including tiliroside, quercetin-3-O-(6''-O-(E)-p-coumaryl-β-D-glucopyranoside, isoquercetin, and quercetin were isolated from the calyx of H. sabdariffa collected in Bac Giang province, Viet Nam. In addition, the methanol extract of the H. sabdariffa calyx showed the ability to scavenge DPPH free radicals with SC50 values ranging from 103.61-119.16 µg/ml, in comparison with that of the positive control, ascorbic acid (SC50 = 10.75 µg/ml).
7p
nguaconbaynhay11
01-04-2021
18
2
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The objectives of this study are to investigate the main chemical compositions of Euphorbia hirta L. to search for chemical constituents in relation to biological activities, contributing to further studies to create products for application in the aquarculture industry in particular and for life in general.
31p
capheviahe27
23-02-2021
25
3
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The objectives of the thesis: Study on chemical constituents of two species Markhamia stipulata var. canaense V.S. Dang and Stereospermum binhchaunesis V.S. Dang; evaluation of biological activities of isolated compounds to find potential compounds.
27p
capheviahe27
23-02-2021
11
2
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