http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112645939-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ec3df5f930038e54fbef5d554fd00bc6 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D407-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D407-04 |
| filingDate | 2020-12-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_870dbb759f07fb31c4d78b8beceb7449 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_22ab55c79a090bb24b0eff2244fcbc06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ead098a8bf7217ee80187a808ae4c061 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_05d2f50090f623c91d57d4285b234f3f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b809beb427ee88dbb74e019e851ab38e |
| publicationDate | 2021-04-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112645939-A |
| titleOfInvention | Method for purifying puerarin by anion resin method |
| abstract | The invention provides a method for preparing puerarin by an anion resin method, which comprises the following specific steps: collecting pulverized radix Puerariae 5kg at 50 deg.C, adding 70% methanol solution 2L, and ultrasonic extracting at room temperature for 20 min; filtering with conventional filter paper for 1 time, repeating for two to three times, mixing filtrates, concentrating under reduced pressure to dryness, dissolving the dried substance with water, and diluting to a constant volume of 600mL to obtain puerarin extractive solution; adjusting pH of puerarin extractive solution to 6.0 with hydrochloric acid or sodium hydroxide solution, mixing with IRA-900 anion exchange resin at 40 deg.C for 12 hr, and filtering with three layers of gauze for 1 time to obtain anion exchange resin; desorbing the exchanged IRA-900 anion exchange resin with 70% methanol at 30 deg.C and pH of 7 for 7 hr, collecting puerarin desorption solution, and detecting its purity by high performance liquid chromatography. |
| priorityDate | 2020-12-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 29.