No abstract available.
Biochemistry* ; Korea*

Investigation of Pseuderanthemum palatiferum (Nees) Radik showed that fresh leaves were rich with mineral elements, especially calcium (875.5 mg%) kalium (587.5 mg%) and iron (38.75 mg%). Amino acids also occurred in large amounts, such as isoleucine (148.34 mg%), alanine (106.44 mg%), valine (99.73 mg%), leucine (84.15 mg%). The leaves extract was non-toxic to fish
Plants ; Botany ; Biochemistry

Melaleuca alternifolia Cheel was acclimatized from Australia to grow in Vietnam. Samples were collected from various provinces, and the analysis of M. alternifolia Cheel was performed by means of gas chromatography-mass spectrometry to afford four different chemotypes with terpinene-4-ol (34.08-40.44%), terpinelene (39.47-60.34%), 1,8-cineole (71.23-77.54%) and terpinolene (34.89-38.30%) plus 1,8-cineole (30.84-35.26%) respectively as main components of the essential oil
Melaleuca ; chemistry ; Biochemistry

The quantitative determination was performed on atomic absorption spectrophotometer. Herbal remedy Codonopsis pilolusa (Franch.) Nannf., yeast extract and SMC preparations (liquid and powdered) were proved to contain calcium, magnesium, iron, zinc, manganese and copper. Selenium was also found in yeast extract and SMC preparations. The quantative results were given
Codonopsis ; chemistry ; Biochemistry ; Minerals

Reverse phase high performance liquid chromatography method for separation and quantitative determination of major saponins in Panax notoginseng (Burk) F.H. Chen. and its pharmaceutical preparations was described. The quantitative results of saponins (gingsenosides Rg1, Re, Rd, Rb1 and notoginsenoside R1) were given
chemistry ; Biochemistry ; Flants ; Saponins

Wedelia calen-dulacea Less. (Asteraceae) is well known for its antibacterial, demulcent and antifebrile properties, it is a traditional medicine which wild growing in many areas in Viet Nam. The researchers firstly study its chemical composition. Results of the chemical analysis show that: The plant contains flavonoid, alcaloids, coumarin, triterpenoid saponins, tanin, sugars, fat, sterols and carotenoid. The content of total flavonoids is about 1% (on dry basis), at least 11 spots on chromatogram. The content of total saponins is about 12% (on dry basis). The analysis with 3 different solvent systems revealed at least 15 spots on chromatogram. Some of the spots can be shown with both flavonoid and coumarin reagents, these are tentatively called coumestan components.
Asteraceae ; Medicine, Traditional ; Biochemistry

Ethanol extract of the mixture of Ligusticum wallichii and Angelica acutiloba exerts significant anticoagulant effect on human blood in in vitro experiments. At concentration of 1:25 in the serum, the extract prolongs the prothrombin, thromboplastin and thrombin times, thus inhibits all the three steps of the coagulation process, i.e, the exogenous, the endogenous precoagulation steps and the formation of fibrins. Finally, at concentration of 1:50 in the serum, the mixture significantly reduces theplatelet aggregation blocking the clotting process.
Anticoagulants ; Blood ; Biochemistry

Cortex Mori radicis (CMR) is a traditional medicine using in the treatment of cough due to heat phlegm. The material consists of Cortex Mori radicis harvesting from the mulberry of four, five, seven and ten years in Hai Duong, Lao Cai, Lam Dong province and bought in Lan Ong street (Ha Noi) and pure honey. CMR is processed by mixing with honey and roasted. CMR with before and after processing also consist of uniform chemical components: flavonoids, tanin, total nitrogen reduced sugars, amino acids and organic acids of the remedy. The contents of flavonoid and tanin in raw CMR and processing CMR does not alter significantly.
Medicine, Traditional ; Chemistry ; Biochemistry

The Panax vietnamensis (K5 panax, Ngoc Linh panax) known as its scientific name is Panax vietnamensis Ha et Grushv., belonging to Araliaceae. K5 panax is the 3rd genus of panax L. branch and the 20th in the world. The mojoir components of Panax vietnamensis are determined the majonosid R2, 17 fat acide with 0.53% contents.
Panax ; Medicine, Traditional ; Biochemistry

Materials and methods: Fruits and leaves of Litsea cubeba (Lour.) Pers. were collected in August 2001. The essential oil analysis was carried out by combination of capillary gas chromatography and mas spectrometry. Results: 16 constituents were identified in the fruit oil, and 27 in the leaf oil. The major components of the fruit oil were geranial (46.83%) and neral (38.77%). The monoterpenic hydrocarbon compounds occurred in a very low amount, except l-limonene (2.14%). The other oxygenated compounds as well as the sesquiterpenic compounds were only about 1%. The major constituents of the leaf oil were cis-ocimene (42.84%) and cineole (10.54%). In addition, there were: linalool (2.07%), terpinene-4-ol (3.65%) and alpha-terpineol (3.65%). The monoterpenic hydrocarbon compounds were found at the level of 74.56%.
Chemistry ; Biochemistry ; Plants