http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105647232-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B61-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B61-00 |
| filingDate | 2016-03-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-03-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-03-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-105647232-B |
| titleOfInvention | Preparation method of Monascus yellow pigment |
| abstract | The invention provides a preparation method of a monascus yellow pigment, comprising the following steps: sulfonating: performing a sulfonation reaction by taking an ethanol-soluble monascus red pigment as a raw material, dilute sulphuric acid as a sulfonating agent and sulfamic acid as an assistant; collecting sediment: collecting the obtained sediment, washing by using dilute alkali or water, and collecting the washed sediment; alkaline hydrolysis: adding an alkaline hydrolysis agent in the washed sediment for alkaline hydrolysis, thus obtaining monascus yellow conversion liquid; desalting: adjusting pH of the obtained monascus yellow conversion liquid, and desalting by using an electric drive film method, thus obtaining monascus yellow low-salt liquid; dying: concentrating and drying the obtained monascus yellow low-salt liquid, thus obtaining the monascus yellow pigment. The preparation method belongs to the technical field of pigments; by adding the small amount of sulfamic acid as the assistant, quick sulfonation of the dilute sulphuric acid on the ethanol-soluble monascus red pigment can be realized, reaction conditions are mild, by products are few, operation safety is good, and the prepared monascus yellow pigment is high in color value, good in stability and high in mass yield. |
| priorityDate | 2016-03-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 41.