http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104628739-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c4acd4be31c2a9baf22ff69c36364313 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D493-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D493-20 |
| filingDate | 2013-11-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5b0288e2b2a95aeb8dc7013ceedd1b32 |
| publicationDate | 2015-05-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-104628739-A |
| titleOfInvention | Extraction technology of artemisinin |
| abstract | The invention relates to an extraction technology of artemisinin, and belongs to the technical field of natural plant extraction. The extraction technology comprises the following steps: (1) drying raw materials: putting the raw materials in a drying facility to dry the raw materials; (2) primary preparation of artemisinin: putting the dried raw materials in an extraction tank, adding petroleum ether into the extraction tank, heating, carrying out reflux extraction, discharging the liquid extract from the extraction tank after the reflux extraction, allowing the liquid extract to stand still for a while, collecting the supernate, making the supernate go through a silica gel column, then washing the silica gel column by petroleum ether, collecting the fractions containing artemisinin, transferring the fractions to a condensing tank, condensing the fractions, transferring the condensed liquid to a crystallization tank when the liquid in the condensing tank start to crystallize, carrying out crystallization in the crystallization tank, filtering to obtain the crystals, and drying the crystals so as to obtain crude artemisinin; (3) artemisinin refinement: placing the crude artemisinin in an alcohol-precipitation tank, dissolving the crude artemisinin by ethanol with a concentration of 85-95%, wherein the volume of the ethanol is 60 to 70 times of that of the crude artemisinin, allowing the solution to stand still for a while, collecting the supernate, subjecting the supernate to fine filtration, transferring the filtrate to a condensing tank, condensing the filtrate, allowing the condensed filtrate to stand still so as to carry out crystallization, filtering to obtain the crystals, and finally drying the crystals in vacuum so as to obtain refined artemisinin. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112979673-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-115466647-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-107827904-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106496244-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105779129-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114437869-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-107674084-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-107746407-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113105947-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114231359-A |
| priorityDate | 2013-11-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 41.