http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109896945-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ad5fc0fd4ef3008dfd82b1053191f36e |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-54 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C46-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C50-34 |
| filingDate | 2017-12-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_68cb6bba36c7a9bfb89ef37892732245 |
| publicationDate | 2019-06-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109896945-A |
| titleOfInvention | A method of extracting rheum emodin from polygonum cuspidate |
| abstract | The present invention relates to a kind of extracting method of effective component of chinese medicine, in particular to a kind of method that rheum emodin is extracted from polygonum cuspidate, comprising the following steps: (1) polygonum cuspidate is cleaned, dry under the conditions of 100 ~ 120 DEG C to constant weight, be crushed to 80 ~ 100 mesh；(2) ethyl alcohol of 3 ~ 5 times of volumes is added by volume, is ultrasonically treated 20 ~ 30 minutes；(3) propyl alcohol, supercritical CO is added in the mixed liquor after taking ultrasound 2 Extraction；(4) extracting solution is concentrated, the enzyme that 0.01 ~ 0.03 times of amount is added is digested；(5) the product liquid after enzymatic hydrolysis is filtered, is recrystallized and be freeze-dried with ethyl alcohol, obtains finished product.The present invention is ultrasonically treated raw material polygonum cuspidate, raw material can be made to be efficiently separated, substantially increase the utilization rate of raw material；Using propyl alcohol and ethyl alcohol as modifying agent supercritical CO 2 Resveratrol is extracted, and is digested with enzyme, the yield and purity of rheum emodin extraction are improved. |
| priorityDate | 2017-12-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 73.