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Wysłany: Wto 4:02, 15 Mar 2011
Temat postu: ugg boots italia rgo qde bdq teh
Effective components of Chinese medicine extraction and separation of Magnolia
500ml water flow extraction and ultrasonic extraction of 4 methods are crude extracts ,
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, using silica gel TLC, ethyl acetate by acetone and a one of a water ethanol ( 2:1:0.5:0.5 ) launched by modified iodine Color of potassium bismuth , as shown in Figure 4 to 7 . The results showed that the ultrasonic extraction of acidic hot to mention better than 50 % alcohol extract and cold soak method. Table 1, several different effects of alkaloids extracted from Magnolia Comparison Note : The number of that color depth + level + the more acidic that the darker the Magnolia through the cation exchange resin extract the product of concentrated extract, but the emulsion is Serious. Alumina used in this study direct adsorption, the principle is the use of alkaloid adsorption capacity of alumina to weaker acid and neutral pH composition ,
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, which can remove the sample solution in a large number of acidic and neutral impurities, simplifies the testing process . In general,
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, the separation of alkaloids should not be used silica gel, in this experiment , the use of silica gel adsorption of polar alkaloids and strong features, in Tianjin Pharmaceutical TianjinPharmacy2009 Vol.21 No. 4 before the initial phase of silica gel column Washed out a lot of impurities and fat-soluble alkaloids,
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, and then remove the acidic water directly to the silica gel extracted by hot water-soluble formulation of raw Figure 4 Acid chromatograms of the samples acidic cold soak method in Figure 5 the chromatogram of the samples found in the experiment Magnolia Contains fat-soluble and water-soluble alkaloids of two parts , and the two parts of the pharmacological activity of alkaloid screening , some of the alkaloids found in Magnolia has some inhibiting airway contraction,
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, its role and mechanism of strength yet to be Further study.
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