http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108918739-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N30-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N30-74 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N30-74 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N30-06 |
| filingDate | 2018-08-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-08-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-08-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108918739-B |
| titleOfInvention | A kind of pretreatment method and high performance liquid chromatography method for determination of shikonin in O/W type shikon skin care milk |
| abstract | The invention belongs to the technical field of analytical chemistry and discloses a pretreatment method and a high performance liquid chromatography method for determining shikonin in O/W type shikon skin care milk. Pre-treatment method: First, mix O/W type comfrey skin care milk with oil, demulsification and extraction, and take the oil layer; mix the oil layer with the alkaline aqueous solution, let it stand, and take the alkaline water layer; add acid to adjust the pH of the solution to 4 ~6, adding an organic solvent, standing, taking off the lower organic layer, removing the organic solvent of the organic layer, and obtaining solid shikonin. In the present invention, the solid shikonin is prepared into a solution, and the high-performance liquid chromatography is used to detect the content of shikonin in the shikonin skin care milk. The pretreatment method of the invention is simple and fast, the emulsion is completely demulsified, the purity of shikonin is high, and the detection accuracy and detection sensitivity of liquid chromatography are improved. At the same time, the method of the invention is closer to the real value, the detection effect is more accurate, the recovery rate is high, and the repeatability is good. |
| priorityDate | 2018-08-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 94.