No abstract available.
Biochemistry* ; Korea*

The remedy “dang sam” has been used commonly in the traditional oriental medicine to reinforce “khi” (vital energy). Two species of “dang sam” were found in Sapa city (Lao Cai province): a wild one and an acclimatized one. In the current study, the botanical characteristics of the wild “dang sam” were described, and the plant was identified as Codonopsis javanica (Blume) Hook f. The acclimatized “dang sam” also exhibited the characteristics of the Codonopsis genus, and has been planned to be the object of a further study in the future.
Plants ; Medicine, Traditional ; Biochemistry

Both ethanol extracts of the bark and leaves of Schefflera elliptica (Blume) Harms (Araliaceae) showed antistress effect on mice at the oral doses of 158 and 167 mg/kg body weight, respectively. The bark proved to be more effective than the leaves, and their efficacity increased with the doses. Both extracts possessed in vitro antioxidant activity at the concentrations of 50-100 mcg/ml, the bark also being more effective than the leaves. The total saponin extract of the bark exhibited antioxidant effects at the levels of 5-25 mcg/ml. So, saponins might be the chemical constituents determining the antioxidant activity.
Plants ; Biochemistry ; Araliaceae ; Therapeutics

The authors have examined the biochemistry activity of the hospital during the past 4-5 years. The numbers of the tests have been raising from 52,000 to 140,000/year. The different kinds of tests have been raising from 55 to 90. The quality of the tests is poor; now 90% of them give high precise results.
Biochemistry ; Diagnostic Tests, Routine

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