http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102212024-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d03b1f4dfcfe5f58f965280fdd3d863e |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C403-24 |
| filingDate | 2011-04-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2013-12-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0f41336324dc06394aa80c41d542967e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1aefaf934f9250ae038af011f9959623 |
| publicationDate | 2013-12-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102212024-B |
| titleOfInvention | Method for synthesizing astaxanthin by using natural lutein |
| abstract | The invention discloses a new method for synthesizing astaxanthin by using natural lutein. The method comprises the following steps of: adding lutein powder into an ethanol solution or a methanol solution to obtain a solution, of which the lutein concentration is 50 to 120g/L, and then adding N-hydroxysuccimide or N-bromosuccinimide for reaction, wherein the mass ratio of the lutein powder to the N-hydroxysuccimide or the N-bromosuccinimide is (30-50): 1; reducing the temperature of the reaction solution to 45-58 DEG C, reducing the pressure to 100-140psi, continuously keeping the reaction for 50 to 70 minutes, stopping the reaction when the reaction solution is reddish brown, and reclaiming the organic solvent under reduced pressure; and dissolving the reduced pressure reclaimed substances by using diethyl ether, regulating the pH to 0.5-1.5, closing the reaction kettle, raising the temperature to 95-120 DEG C, reacting, stopping reaction till the reaction solution is reddish brown, reclaiming the organic solvent under reduced pressure, and washing to obtain the astaxanthin monomer. The astaxanthin content of a levorotatory structure reaches 80 percent, the property of the astaxanthin is very close to that of algae source astaxanthin, and the synthesized astaxanthin has strong biological activity. |
| priorityDate | 2011-04-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 47.