http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102093456-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ac31afbea1cbbb03498644721ffb4a62 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07J53-00 |
| filingDate | 2011-02-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2013-11-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f511f189c8120d6dd83453bf269e1c8c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e2f06609c2bb5ea09cbd6f99ffd685c4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f8461873ddaa5434d63b3856d64fd06b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a2960fe1f04ef54b30c9035eee0e7962 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c06a078e29d2d7616ddae2dd07c2b9ea http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_45da609f7f8effbad3da30869c2edc70 |
| publicationDate | 2013-11-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102093456-B |
| titleOfInvention | Method for extracting astragaloside IV from astragalus |
| abstract | The invention relates to a method for extracting astragaloside IV from astragalus and belongs to the technical field of medicines. From an economic prospective, the convention method greatly increases production cost and period, which is unfavorable for the competition of enterprises on market. The method provided by the invention comprises the following steps: a, soaking an astragalus medicinal material in alcohol, heating, extracting and concentrating the extract to a certain volume; b, adding alcohol into the concentrate; c, adding petroleum ether, normal hexane or ethyl acetate into the solution obtained by the step b for extraction, and collecting a bottom phase; d, concentrating the lower phase till the lower phase contains no ethanol, adding alkaline solution and dehydrating for 0.5 to 10 hours at 30 to 100 DEG C; and e, adding n-butyl alcohol and one or several of ethyl acetate, normal hexane or petroleum ether for mixed extraction, collecting an upper phase, washing the upper phase, evaporating the upper phase to dryness, and crystallizing to obtain astragaloside IV. The purity of the astragaloside IV prepared by the method can reach 90 to 99 percent. |
| priorityDate | 2011-02-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 44.