C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
402/5, 260/496.6
C07C 67/56 (2006.01) C07C 69/675 (2006.01) C12N 1/06 (2006.01) C12P 7/62 (2006.01)
Patent
CA 1334430
Hypochlorite digestion of bacterial biomass to re- cover intracellular poly-.beta.-hydroxyalkanoic acid (PHA) has not been used on a large scale since it has been widely reported to severely degrade the polymer. The process of the invention proposes to optimize the initial biomass concentration, the digestion time and pH of the hypochlorite solution to minimize degradation. Consequently, PHA of up to 95% purity with an average molecular weight of 600,000 can be recovered from biomass initially containing PHA having a molecular weight of 1,200,000. By incorporating a pretreatment step with an anionic surfactant solution, PHA of 99% purity with a molecular weight of 1.20 x 106 was obtained from biomass containing 57% PHA by weight with an initial molecular weight of 1.25 x 106.
595881
Berger Eric
Braunegg Gerhart
Chavarie Claude
Ramsay Bruce
Ramsay Juliana
Ecole Polytechnique
Robic
LandOfFree
Separation of poly-.beta.-hydroxyalkanoic acids from... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Separation of poly-.beta.-hydroxyalkanoic acids from..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Separation of poly-.beta.-hydroxyalkanoic acids from... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1229981