Method for simultaneously extracting polysaccharide and flavone from stems and leaves of radix tetrastigme
A technology of clover, stems and leaves, applied in the field of simultaneous extraction of polysaccharides and flavonoids, which can solve the problems of waste, waste of polysaccharides or flavonoids, low extraction rate, etc., and achieve high yield, simplified production process, and great economic value.
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[0057]Example 1
[0058]The invention provides a method for simultaneously extracting polysaccharides and flavonoids from the stems and leaves of Trifolium pratense, comprising:
[0059]S1. Drying and crushing the stems and leaves of Trifolium repens to obtain dry powder of Trifolium repens;
[0060]Among them, the drying temperature is 40°C; crushed through a 60-mesh sieve;
[0061]S2. Mix the dry powder of the stems and leaves of Trifolium repens with the acidic ethanol solution in a mass ratio of 1:5 to obtain a mixed solution;
[0062] Wherein, the acidic ethanol solution is a mixed solution of concentrated hydrochloric acid and ethanol, and the amount of concentrated hydrochloric acid accounts for 10% of the volume of ethanol;
[0063]S3. Treat the mixed solution in a 70°C water bath for 30 minutes, and centrifuge to obtain the first supernatant and the first residue;
[0064]S4. Add deionized water 10 times the weight of the residue to the first residue, microwave extraction for 5 minutes, and cen...
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[0069]Example 2
[0070]The invention provides a method for simultaneously extracting polysaccharides and flavonoids from the stems and leaves of Trifolium pratense, comprising:
[0071]S1. Drying and crushing the stems and leaves of Trifolium repens to obtain dry powder of Trifolium repens;
[0072]Among them, the drying temperature is 40°C; crushed through a 60-mesh sieve;
[0073]S2. Mix the dry powder of Trifolium repens stems and leaves with the acidic ethanol solution in a mass ratio of 1:10 to obtain a mixed solution;
[0074]Wherein, the acidic ethanol solution is a mixed solution of concentrated hydrochloric acid and ethanol, and the amount of concentrated hydrochloric acid accounts for 10% of the volume of ethanol;
[0075]S3. Treat the mixed solution in a water bath at 75°C for 40 minutes, and centrifuge to obtain the first supernatant and the first residue;
[0076]S4. Add deionized water 12 times the weight of the residue to the first residue, microwave extraction for 7 minutes, and centrif...
Example Embodiment
[0081]Example 3
[0082]The invention provides a method for simultaneously extracting polysaccharides and flavonoids from the stems and leaves of Trifolium pratense, comprising:
[0083]S1. Drying and crushing the stems and leaves of Trifolium repens to obtain dry powder of Trifolium repens;
[0084]Among them, the drying temperature is 40°C; crushed through a 60-mesh sieve;
[0085]S2. Mix the dry powder of Trifolium repens stems and leaves with the acidic ethanol solution in a mass ratio of 1:10 to obtain a mixed solution;
[0086]Wherein, the acidic ethanol solution is a mixed solution of concentrated hydrochloric acid and ethanol, and the amount of concentrated hydrochloric acid accounts for 10% of the volume of ethanol;
[0087]S3. Treat the mixed solution in a water bath at 75°C for 50 minutes, and centrifuge to obtain the first supernatant and the first residue;
[0088]S4. Add deionized water 12 times the weight of the residue to the first residue, microwave extraction for 7 minutes, and centrif...
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