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OBJECTIVE To optimize the extraction technology of volatile components from Wuyao decoction. METHODS On the basis of single factor investigation ，the extraction technology of volatile components from Wuyao decoction was optimized and validated by Box-Behnken design-response surface technology using the contents of bomyl acetate ，cyperotundone，α-cyperone， ligustilide and dehydrocostuslactone ， extraction rate of volatile oil as indexes ， with extraction time ， soaking time and liquid-material ratio as factors. On this basis ，the extraction state of the decoction was quantified. RESULTS The optimal extraction technology was as followed ：the ratio of liquid -material was 13∶1（mL/g），soaking time was 0.5 h，and the extraction time was 6 h in the boiling state. The comprehensive scores of the three validation experiments were 0.948 7，0.948 4 and 0.948 6 respectively （RSD＝0.02％，n＝3），and the deviation from the predicted value （0.947 9）was no more than 1％. The boiling state of the decoction in 180 ℃ oil bath was taken as the sudden boiling state. CONCLUSIONS The optimized extraction technology is stable and feasible.
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Glycosides are the active ingredients (AIs) of many Chinese herbs and have become hot spots along with the findings of their new functions,such as anti-inflammatory,antivirus,enhanced immunity and anti-cancer.It has been found that glycosides exert their effects by converting to aglycons or other AIs in vivo.Therefore,the transformation of glycosides to the corresponding AIs in vitro becomes very important to enhance their bioavailabilities.The microbial transformation has an unparalleled advantage in the transformation of Chinese herbs in vitro for its reaction specificity,less by-products,mild reaction conditions and environmental protection.This paper summarized and prospected researches of glycosides' microbial transformation.
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Esophageal gastric variceal bleeding(EGVB)is a serious complication of cirrhotic portal hypertension with high mortality rate. Prevention of EGVB is an important mean to improve the survival of patients. Non-selective beta-blockers(NSBBs)is one of the first-line drugs for primary and secondary prevention of EGVB,however,only about 1 / 3 of cirrhotic patients respond to this treatment when evaluated by hepatic venous pressure gradient( HVPG). This may be related to the genetic polymorphisms of NSBBs’receptors and the metabolic enzymes. This article reviewed the progress in study on therapeutic efficacy of NSBBs and its influencing factors for preventing EGVB in cirrhotic patients.
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<p><b>OBJECTIVE</b>To investigate the chemical constituents of Corydalis yanhusuo.</p><p><b>METHOD</b>The compounds were isolated and purified by column chromatography over macroporous absorption resin, silica gel, and Sephadex LH-20. Their structures were elucidated on the basis of physicochemical properties and spectral data.</p><p><b>RESULT</b>22 compounds were isolated and identified as corydaline (1), tetrahydropalmatine (2), protopine (3), tetrahydrocorysamine (4), tetrahydrocoptisine (5) , tetrahydroberberine (6), tetrahydrocolumbamine (7), noroxyhydrastine (8), dehydrocorydaline (9), glaucine (10), columbamine (11), 8-oxocoptisine (12), 13-methyl-columbamine (13), coptisine (14), palmatine (15), herberine (16), oxoglaucine (17), 13-methyl-palmatrubine (18), dehydrocorybulbine (19), stepharanine (20), adenosine (21), and N5 -acetylornithine (22).</p><p><b>CONCLUSION</b>Compounds 13, 20, 21, and 22 were isolated from this plant for the first time.</p>