http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-94002793-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_be62407994385193dfe89eed6b12afd1 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K36-15 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-32 |
| filingDate | 1994-02-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1b9735fb23256b40b4f9b26ee6915607 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ffb4983a7523d1858640080492e89422 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9ce7859f0f68b4d88ff0b707aaca1d2f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e5142269e371cccbeb09161df2853fe7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_af2438264e640d463bcbfdb93d5c1113 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d0e017651c6c9a36ccf0f1a31b579f43 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5d152074a9bd8e515a33775bf6ce03f1 |
| publicationDate | 1996-07-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-94002793-A |
| titleOfInvention | Method for extraction of dihydroquercitrol |
| abstract | The invention relates to medicine and relates to a method for the isolation of dihydroquercetin (DHQ) from larch wood. The aim of the invention is to simplify the process of separation of DHQ and increase the yield of the target product while maintaining a high degree of purity. This is achieved by the fact that water-washed crushed larch wood is extracted at normal temperature with a mixture of water and acetone 1: 4 parts by weight Acetone is distilled off from the extract, and the DKW precipitate that has precipitated from the aqueous portion of the extract is separated by centrifugation and recrystallized from hot water. The use of this method for the isolation of DHQ from larch wood eliminates the use of a polyamide sorbent from the technological process and, therefore, the stage of sorption, desorption and regeneration of the sorbent, selectively extracts DHQ with an aqueous-acetone mixture without heating chopped wood from pre-washed water, which leads to an increase in the yield of the target product when maintaining the degree of purity of the product. |
| priorityDate | 1994-02-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 26.