Zhi-jing Ma

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OBJECTIVE To investigate the effects of processing adjuvants-different types of processing vinegar on effective constituents in rhizoma of Corydalis yanhusuo, and evaluate the quality of different types of vinegar in China. METHOD The HPLC method was adopted to determine the extraction solubility of dl-tetrahydropalmation and total alkaloids in rhizoma of(More)
OBJECTIVE To establish a quantitative method for determination of synephrine and N-methyltyramine in Citri Reticulatae. METHOD Samples were extracted with 30% methanol. ODS column was used with methanol-water-sodium dodecyl sulfate (55:45:0.1) as mobile phase. Detection wavelength was 285 nm. RESULT Synephrine and N-methyltyramine in sample solution(More)
OBJECTIVE To investigate the chemical constituents of Fraxinus paxiana. METHOD The chemical constituents were isolated and purified by chromatographic techniques and the structures of the compounds were identified with or by spectroscopic methods. RESULT Fifteen compounds were obtained from the methanol extract of F. paxiana and their structures were(More)
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