OBJECTIVE:To optimize the extraction and purification techniques of total Flavonoids in Mappianthus iodoies.METHODS: The content of total Flavonoids was determined by UV spectrophotometry. Orthogonal experiment was carried out to investigate the effects of concentration of solvent, the ratio material to liquid, time length of extraction, and frequency of extraction on extraction results of total Flavonoids from Mappianthus iodoies. Under this condition, by means of D-101 macroporous resin, the crude Flavonoids extraction was purified. RESULTS: The best extraction conditions were as follows: using 65% (V/V) ethanol as extractor with the ratio of material to liquid at 1:10,and extracting for 2.5 h/time for 3 times. The content of total Flavonoids in the refined product was above 86%. CONCLUSION: This study provided scientific basis for further research, development and utilization of Mappianthus iodoies.

Objective To study the antitumor components from an actinomycete strain(N2010-37)of bottom mud in Zhanjiang Mangrove,South China Sea.Methods The components were isolated and purified by chromatographic techniques and recrystallization,and the structures were identified by spectral methods together with physicochemical analyses.The antitumor effects of these components were tested in vitro by MTT method.Results Three compounds were identified including two anthrones and one novel lactone.They are(3S,4R,7R,8R,9S)-3,8-dihydroxy-4,7,9-trimethyl-2,6-cyclononanediolacetone(1),2-hydroxy-l-methoxy-3-methylanthraquinone(2),and 1,6,8-thihydroxy-3-methyl-anthraquinone(3).Conclusion Compound 1 is a new compound,and compounds 1 and 3 show the favorablecytotoxic activities against human chronic granulocytic leukemia cell line K562 strain by MTT method in vitro.

OBJECTIVETo develop an HPLC method for quantitative determination of three quassinoids in Brucea javanic.

METHODThe determination was carried out on a phenomenex C18 column (4.6 mm x 250 mm, 5 microm) with gradient elution program of methol-water at a flow rate of 1.0 mL x min(-1), and the detection wavelength was 270 nm.

RESULTLinearites of bruceine D, brusatol and bruceine H were good (r = 0.9996, 0.9996, and 0.9998) in ranges of 2.52-12.60, 2.19-10.95, and 2.91-14.55 microg, respectively. The average recoveries of bruceine D, brusatol and bruceine H were 100.01%, 100.95% and 100.43% respectively, and RSD of the above three compounds were 0.31% (n = 6), 1.7% ( n = 6) and 1.7% (n = 6), respectively.

CONCLUSIONThe determination results of three batch samples showed that the method was simple, accurate and could be used in the quantitative determination of three components in the B. javanica.

Brucea ; chemistry ; Chromatography, High Pressure Liquid ; methods ; Drugs, Chinese Herbal ; analysis ; isolation & purification ; standards ; Linear Models ; Organic Chemicals ; analysis ; isolation & purification ; standards ; Quality Control