The qualitative and quantitative analyses of Atalantia roxburghiana Hook. f. essential oil, using gas chromatography – mass spectrum method, were described. The essential oil content calculated on air dried leaves and fruits was 0.09%. The main constituents among 30 compounds identified in the oil were: para-cymene (13.37%), gamma-terpinene (40.63%), limonene (4.58%), and beta-pinene (4.59%).
Chemistry ; Plants ; Plants, Medicinal ; oils

The stems and roots of Schefflera sp3 contained numerous fibers with cubic calcium oxalate crystals, lignified medullary rays. The leaves were covered with protective multicellular hairs in the shape of ramified candles. Saponin triterpenes, phytosterols, reduced sugars, tannin, coumarins, organic acids and uronic compounds were found in the leaves, stems and roots. Of the unsaturated fatty acids, oleic and linoleic acids were found in high amount in these 3 parts of the plant, but linolenic acids only in the leaves. The composition of oligoelements were similar in the 3 parts, except Cr only in the leaves, Ga only in the roots, whereas Ni, Mo, Sn and Pb only in the stems.
Botany ; chemistry ; Plants, Medicinal

The yam of “Cay Ray” (Vietnamese) - Alocasia odora Roxb., family of Araceae, after 2 years of cultivation is harvested, moving the outer cover, cutting in thin slice, drying at 400C. Chemical and physico-chemical analysis showed some protid, glucid and lipid components derivatives including alcaloids (in the form of base and salt), phytosterol, free organic acides, reduced sugar, steroid, saponine
Plants, Medicinal ; Araceae ; Chemistry

Lasia spinosa L. (Araceae) has been used in the Vietnamese traditional and folk medicine for treating sore throat, cough, nephritis, rheumatism, liver diseases (hepatitis, ascitic cirrhosis), sequels of malaria and skin diseases. In this primary study on chemical constituents of Lasia spinosa L., leaf powder and root powder of Lasia spinosa L. were leached with n-hexan, CHCl3 and MeOH solvents, three times for each solvent. 5 compounds including p-hydroxy benzaldehyde, acid p-hydroxybenzoic, acid 3-hydroxy-4-methoxy benzoic, 2-(4’- methoxyphenyl)-ethanol, adenine were isolated by spectroscopic methods
Plants, medicinal ; Chemistry

Crateva advansonnii DC.-Capparaceae is a medicinal plant which has been used as an antidote for snakebite in Tay Ninh province and in Cambodia. The chemical study on the bark of this plant led to the isolation as a triperpen with structure was unambigously determined as epi-lupeol by UV, IR and NMR spectral data
Chemistry ; Capparaceae ; Plants, Medicinal

The formula of the skin cream containing the extracts of Centella asiatica (L.) Urb. and Curcuma longa L. - the two medicinal plants available in Vietnam – was established by means of experimental design and computer – aided optimization. At first, the formulae were designed by varying the amounts of their ingredients such as Polawax, cetostearyl alcohol, Tween 80 and Span. Then, the Oil-in-Water emulsion – type creams were manufactured by using the PUC VIKOSATOR emulsor. Next, the resulted products were evaluated for their physics – chemical parameters including the melting point, the extrudability and the number of the Oil particles. After that, the multiple – objective optimization was performed by the CAD/Chem artificial intelligence software, which is the unification of neural networks, fuzzy logic and genetic algorithms. At the end, the optimized formula was strictly evaluated by both hypothetical tests and experimental trials. In drug quality control, the investigation of skin cream was proven to meet its ointment requirements.
Cookery ; Chemistry ; Pharmaceutical ; Plants, Medicinal

'Don la do' used in Vietnam was identified as being Excoecaria cochinchinensis Lour. Euphorbiaceae. The Don la do extract is a traditional medicine for treatment of pustule, eruption, allergy. The chemical analysis confirmed the Don la do extract contains flavonoid, saponin, coumarin, tanin, anthraglycosid, but without containing alcaloids, fatty acid, organic acids, heart glycosid. Total flavonoid content is 1.5%. Have extracted and isolated a substance F1, by preparative thin layer chromatography
chemistry ; Plants, Medicinal ; Medicine, Traditional

This traditional remedy composes of popular medicinal plants collected commonly in Vietnam for treating asthma.The qualifying and quantifying analysis showed that main components of the remedy even in its modified formula were common compounds, as alcaloids, flavonoids, saponins, glucosides.,i.e..including all chemical compositions of each separated plants
Chemistry ; Medicine, Traditional ; Plants, Medicinal

Due to the special biological characteristics, Gastrodia elata suffers from high resource consumption and low utilization rate in modern agricultural production, which significantly block the green and healthy development of this industry. Based on the theory and technology in ecological cultivation of Chinese medicinal materials, this study analyzed the challenges in ecological cultivation of G. elata, such as waste of fungus material, a few cultivation modes available, continuous cropping obstacles, frequent occurrence of diseases, and poor stability of ecological structure. According to the production practice, the following suggestions were proposed for ecological cultivation of G. elata: following the principle of environmental protection and no pollution, selecting suitable habitats to yield high-quality medicinal materials, committing to green control of diseases and pests, upgrading industrial structure to maximize the benefits, establishing a sound mechanism for protecting the genetic diversity of wild G. elata, carrying out simulative habitat cultivation to improve medicinal material quality, adopting science-based planning of fungus resources to relieve forestry pressure, enhancing the recycling and utilization of fungus materials, and applying diversified cultivation modes to improve the stability of ecological structure. The result is expected to provide a reference for the quality development of G. elata industry.
Agriculture ; Gastrodia/chemistry* ; Plants, Medicinal/chemistry*

Podophyllotoxin (PTOX) is an extremely important plant-derived natural product, of which derivatives, like etoposide and teniposide, have been widely applied in therapies for cancers and venereal wart. A durable, intense plant extraction of podophyllotoxin posed a severe pressure on wild resources; researchers consequently sought to explore new sources, like cultivation, plant cell or organ culture, and chemical synthesis. Understanding biosynthesis of PTOX is one of the basic necessary steps for standard cultivation of medicinal plants and metabolite engineering. An important progress has been made in this field during the last two decades, particularly in the last ten years. Although a number of reviews concerning the related topic have existed, we specifically deal with biosynthesis of podophyllotoxin with an emphasis on the literatures of the past decade, highlighting characterization of genes encoding synthetic enzymes and down-stream metabolism of PTOX. The present review focuses on several key biosynthesis processes, important metabolites, function of related enzymes, and characterization of cDNA encoding the enzymes. Finally, the author proposed a hypothetical biosynthetic scheme of podophyllotoxin and perspectives.
Plants, Medicinal ; metabolism ; Podophyllotoxin ; biosynthesis ; chemistry ; metabolism