http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103360359-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7d6b77040ead08e28c5be8c6ee138c44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1e74277852f1aae0a3ff13f59a65456d |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-32 |
| filingDate | 2012-05-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2015-03-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_355003230cd4dc2ec4c01b581653a81a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6b709ff157e1c1a737792c331596f8fd http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c1cc479a3107e102fb389c5efb0e2a51 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b456df2bc5e0d23bdd486f19fa5eda32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b609fd83e2f9d6bcaed6da4b5fa6bfa8 |
| publicationDate | 2015-03-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-103360359-B |
| titleOfInvention | Method for refining dihydroquercetin from larch |
| abstract | The invention discloses a method for refining dihydroquercetin from larch by using micro-porous resin. The method comprises the following steps: (1) after crushing the raw material larch wood, adding ethanol water solution to extract, collecting extracting solution and concentrating to obtain extract; (2) performing liquid phase adsorption separation on the extract by using micro-porous resin MCI, performing gradient elution by taking the ethanol water solution with volume fraction of 0-30 percent as an eluant, collecting and combining elution components with volume fraction of 20-25 percent, concentrating and drying to obtain a dihydroquercetin rough product; and (3) recrystallizing the dihydroquercetin rough product to obtain refined dihydroquercetin. According to the method, environment-friendly solvents such as water and ethanol are adopted, are pollution-free and can be recycled; the used adsorbent micro-porous resin introduces less impurities and can be reused for times; the obtained product has purity of greater than 99 percent and has no toxic ingredient residues, and the pharmaceutical-grade raw material can be directly obtained. The method has the advantages of simple route, economy, environmental friendliness and high yield and is suitable for industrial production. |
| priorityDate | 2012-03-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 33.