http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1119414-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f7dc582f2c82524eb1b6dcbd5fe82bf8 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C12C3-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C12C3-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C12C3-08 |
| filingDate | 1964-04-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0a4a3ade952acdd09df1fad9bffd36b4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d267beebdf16d826af622c6e60afae23 |
| publicationDate | 1968-07-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1119414-A |
| titleOfInvention | Isomerised hop extract |
| abstract | An isohumulone containing extract of hops is prepared by contacting the hops with a water immiscible organic solvent to form a solution of a crude extract, separating the solution from the insoluble matter, contacting the solution with aqueous alkali, separating the aqueous phase from the organic phase; heating the aqueous phase to isomerise the humulone content, recovering the isomerized extract from the aqueous phase, contacting the isomerized extract with sufficient acid to bring the pH of the extract to a value of from 2 to 7 and with sufficient of a solvent consisting of 80 to 85% by volume methanol and 15 to 20% water to dissolve a part of the neutralized extract, separating the solution from the undissolved matter and recovering the dissolved portion of the extract. In preferred embodiments, oasted or vine-fresh hops are contacted with benzene, light petroleum, carbon tetrachloride or chloroform at ambient temperature, from 2 to 20% W/V of sodium hydroxide or potassium hydroxide is added whereby the pH of the aqueous phase after contacting with the organic solvent is between 10.7 and 12, isomerisation is achieved by boiling the alkaline solution for at least an hour at atmospheric pressure, carbon dioxide being passed through the alkaline solution to provide an inert atmosphere, the isomerized extract is concentrated to a viscous extract or powder, and then the extract or powder is contacted first with sufficient absolute methanol to dissolve the extract, subsequently the pH is adjusted to a value of from 2 to 7 by the addition of hydrochloric acid and finally water is added to bring the water content to a value of from 15 to 20%. The isomerised extract is finally rendered alkaline (pH between 10 and 12) and dried to a powder. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102510898-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102510898-B |
| priorityDate | 1964-04-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 39.