Patent ID: 9249258
Filing Date: 2016-02-02
CPC Classification: C08G,C08J,C12P,Y10T

Claim Text:
1. A method for producing poly-3-hydroxyalkanoic acid agglomerates, the method comprising culturing a microorganism having an ability to intracellularly produce poly-3-hydroxyalkanoic acid; purifying poly-3-hydroxyalkanoic acid in the absence of any organic solvent by degradation and/or removal of impurities to obtain an aqueous poly-3-hydroxyalkanoic acid suspension having an amount of organic nitrogen of not greater than 6,000 ppm per weight of the poly-3-hydroxyalkanoic acid, allowing poly-3-hydroxyalkanoic acid to be aggregated by adjusting the pH of the aqueous poly-3-hydroxyalkanoic acid suspension to fall within an acidic region after purifying poly-3-hydroxyalkanoic acid by degradation and/or removal of impurities to obtain poly-3-hydroxyalkanoic acid agglomerates.