The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 17, 2018
Filed:
Jun. 02, 2015
Vysoka Skola Chemicko-tech-nologicka V Praze, Prague, CZ;
Nafigate Corporation, A. S., Prague, CZ;
Jiri Trejbal, Kralupy nad Vltavou, CZ;
Martin Zapletal, Vsetin, CZ;
VYSOKA SKOLA CHEMICKO-TECH-NOLOGICKA V PRAZE, Prague, CZ;
NAFIGATE CORPORATION, A.S., Prague, CZ;
Abstract
A method of isolation of polyhydroxyalkanoates from biomass pre-cleans the biomass in a first extraction process by extracting components of the biomass other than polyhydroxyalkanoates. In a second extraction process, polyhydroxyalkanoates are extracted from a solid phase of the biomass obtained in the first extraction process by adding an extraction agent to pre-cleaned biomass based on chlorinated hydrocarbon, carrying out the extraction for 5 to 90 minutes at a temperature in the range of 20 to 120° C., separating the extract containing the polyhydroxyalkanoates from the extraction solution, and feeding the extract to a circulation loop filled with water having a temperature from 20 to 120° C. or a mixture of water and from up to 20% by weight of the extraction agent based on chlorinated hydrocarbon used for the extraction of polyhydroxyalkanoates, wherein the extraction agent is removed from this extract and polyhydroxyalkanoates precipitate.