| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5eb3d0025d129c0bea916ef07aea8e14 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61K2236-33 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61K36-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61P9-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07G99-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61P9-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D11-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K36-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K36-00 |
| filingDate |
1989-02-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3ba1e9f7513e0c382973b587f3125ce0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b3b34e7814ecce3aa2edcbeaa7f76357
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5d839fe021798a87da82d722074d55b3 |
| publicationDate |
1989-08-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0330567-A1 |
| titleOfInvention |
Process for the preparation of an extract from Ginkgo biloba leaves |
| abstract |
The present invention relates to a new process for obtaining an extract of Ginkgo biloba leaves.n n n The method according to the invention is characterized in that the following successive operations are carried out: - grinding of the leaves of Ginkgo biloba; - extraction of the ground material of leaves of Ginkgo biloba using an aqueous ketone solvent; - concentration extraction juices to precipitate biflavonoids and hydrophobic substances; - filtration of the aqueous concentrate; - basification of the filtrate to precipitate the proanthocyanidins; - elimination by filtration of the insoluble fraction containing the proanthocyanidins; - acidification of the filtrate; - liquid-liquid extraction of the filtrate with a C₄-C₆ ketone in the presence of ammonium sulfate, and recovery of the extract by drying the ketone phase. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6086883-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-19756848-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-3940091-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-3940094-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-3940092-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/ES-2036951-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-19756848-C2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1089748-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9932129-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1089748-A1 |
| priorityDate |
1988-02-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |