http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106045984-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_fc0a5ac6a9ff4cdd958075fedb4a59e2 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D407-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D407-04 |
| filingDate | 2016-06-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_eeec399d20666e1e2f3f387026e55547 |
| publicationDate | 2016-10-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-106045984-A |
| titleOfInvention | Method for separating and purifying puerarin by combination of double-aqueous phase extraction-ultrasonic wave |
| abstract | The invention provides a method for separating and purifying puerarin by combination of double-aqueous phase extraction-ultrasonic wave. The method comprises the specific operation steps: extracting kudzu vine root powder with 50%-70% alcohol water solution under refluxing for 12-24 hours to obtain crude liquid; carrying out polyethylene glycol-inorganic salt double-aqueous phase extraction and putting the liquid into ultrasonic wave to be subjected ultrasonic treatment for 20-40 minutes; then standing for 10-20 minutes; taking an upper phase and dialyzing in a dialysis membrane with the molecular mass cut-off of 5000 for 20-26 hours; and freeze-drying to obtain puerarin powder. The method takes the 50%-70% alcohol water solution as an extracting solution, so that high yield and high purity can be obtained and solid and liquid phases can be rapidly separated; a double-aqueous phase extraction-ultrasonic wave combined method is used for purifying the crude liquid and the selectivity on the puerarin is high; a phase separation speed of the system is rapid and rapid phase separation can be realized without the help of equipment including a centrifuge and the like; and the purity of the puerarin in the prepared puerarin powder is up to 97.5% and the total yield is up to 86.6%. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109053706-A |
| priorityDate | 2016-06-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 37.