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Hydroxybutyrate , microbial

Y Doi, Y Kanesawa, M Kunioka, T Saito. Biodegradation of microbial copolyesters Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) and poly(3-hydroxybutyrate-co-4-hydroxybutyrate). Macromolecules 23 26-31, 1990. [Pg.557]

Polyesters, such as microbially produced poly[(P)-3-hydroxybutyric acid] [poly(3HB)], other poly[(P)-hydroxyalkanoic acids] [poly(HA)] and related biosynthetic or chemosynthetic polyesters are a class of polymers that have potential applications as thermoplastic elastomers. In contrast to poly(ethylene) and similar polymers with saturated, non-functionalized carbon backbones, poly(HA) can be biodegraded to water, methane, and/or carbon dioxide. This review provides an overview of the microbiology, biochemistry and molecular biology of poly(HA) biodegradation. In particular, the properties of extracellular and intracellular poly(HA) hydrolyzing enzymes [poly(HA) depolymerases] are described. [Pg.289]

Microbial Synthesis of Poly (3-Hydroxybutyrate-ct -4-Hydroxybutyrate) by Cupriavidus sp. USMAA1020 Isolated from Malaysian Environment... [Pg.187]

The de novo synthesis of fatty acids in the mammary gland utilizes mainly acetate and some (3-hydroxybutyrate. These precursors arise from the microbial fermentation of cellulose and related materials in the rumen. Once in the mammary gland, acetate is activated to acetyl-CoA. The mechanism of fatty acid synthesis essentially involves the carboxylation of acetyl-CoA to malonyl-CoA, which is then used in a step-wise chain elongation process. This leads to a series of short-chain and medium-chain length fatty acids, which differ by two CH2 groups (e.g., 4 0, 6 0, 8 0, etc.) (Hawke and Taylor, 1995). These are straight-chain, even-numbered carbon fatty acids. However, if a precursor such as propionate, valerate or isobutyrate, rather than acetate, is used, branched-chain or odd-numbered carbon fatty acids are synthesised (Jenkins, 1993 see Chapter 2). [Pg.4]

Kim, B. S., Lee, S. C.,Lee, S. Y., Chang, H. N, Chang, Y. K., and Woo, S. 1.1994b. Production of poly(3-hydroxybutyric-co-3-hydroxyvaleric acid) by fed-batch culture of Alcaligenes eutrophus with substrate control using on-line glucose analyzer. Enz. Microbial Technol., 16, 556-561. [Pg.554]

A degradation product of microbially synthesized polyhydroxybu-tyrate (PHB), 3-hydroxybutyrate (3HB), can be an alternative to glucose during sustained hypoglycemia. The 3HB derivative 3-hydroxybutyrate methyl ester (HBME) is used by cells as an alternative to glucose. HBME inhibited cell apoptosis under glucose deprivation, rescued activities of mitochondrial respiratory... [Pg.459]

Lactam antibiotics (penicillins and cephalosporins) microbial oxidation (microbes ) n-Butyric acid is oxidized stereoselectively to (R)-(5-hydroxybutyric acid [82]... [Pg.146]

Braunegg, G., Sonnleitner, B., LafFerty, R. M. (1978). A rapid gas chromatographic method for the determination of poly-P-hydroxybutyric acid in microbial biomass. European Journal of Applied Microbiology and Biotechnology, 6(1), 29-37. [Pg.726]

Mergaert, J. Webb, A. Anderson, C. Wouters, A. and Swings, J. Microbial degradation of poly(3-hydroxybutyrate) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) in soils.Environ. Microbiol. 1993, 59(10), 3233-3238. [Pg.38]

Bonartseva, G. A. et al. Aerobic and anaerobic microbial degradation of poly-beta-hydroxybutyrate produced by Azotobacter chroococcum. Appl. Biochem. Biotechnol. [Pg.39]

Althuri, A. Mathew, J. Sindhu, R. Banerjee, R. Pandey, A. Binod, P. Microbial synthesis of poly-3-hydroxybutyrate and its apphcation as targeted drug delivery vehicle. Bioresour Techno 2013, pii 80960-8524(13)00129-6. [Pg.47]

Jem KJ, van der Pol JF, de Vos S (2010) Microbial lactic acid, its polymer poly(lactic acid), and their industrial applications. In Chen G-Q (ed) Plastics from bacteria natural function and applications, vol 14., Microbiology MonographsSpringer, Berlin, pp 323-346 Jendrossek D (2005) Fluorescence microscopical inyestigation of poly(3-hydroxybutyrate) granule formation in bacteria. Biomacromolecules 6 598-603 Jendrossek D (2009) PolyhydroxyaUcanoate granules are complex subcellular organelles (Carbonosomes). J Bacteriol 191 3195-3202... [Pg.112]

Kusaka S, Iwata T, Doi Y (1998) Microbial synthesis and physical properties of ultra-high-molecular-weight poly[(R)-3-hydroxybutyrate]. J Macromol Sci - Pure and Appl Chem... [Pg.115]

Manna A, Paul AK (2000) Degradation of microbial polyester poly(3-hydroxybutyrate) in environmental samples and in culture. Biodegradation 11 323-329... [Pg.118]

Philip S, Keshavarz T, Roy I (2007) Polyhydroxyalkanoates biodegradable polymers with a range of applications. J Chem Technol Biotechnol 82 233-247 Pierce L, Schroth MN (1994) Detection of pseudomonas colonies that accumulate poly-beta-hydroxybutyrate on Nile blue medium. Plant Dis 78 683-685 Pijuan M, Casas C, Baeza JA (2009) Polyhydroxyalkanoate synthesis using different carbon sources by two enhanced biological phosphorus removal microbial communities. Process Biochem 44 97-105... [Pg.121]

Saito M, Inoue Y, Yoshie N (2001) CodystaUization and phase segregation of blends ofjxrly (3-hydroxybutyrate)and poly(3-hydroxybutyrate-co-3-hydroxyvalerate). Polymer 42 5573-5580 Saito Y, Nakamma S, Hiramitsu M, Doi Y (1996) Microbial synthesis and properties of poly(3-hydrloxybutyrate-co-4-hydroxybutyrate). Polym Int 39 169-174 Salimon J, Abdullah R (2008) Physicochemical properties of Malaysian Jatmpha curcas seed oil. Sains Malaysiana 37 379-382... [Pg.123]

Tian J, Sinskey AJ, Stubbe J (2005) Kinetic studies of polyhydroxybutyrate granule formation in Wautersia eutrvpha H16 by transmission electron microscopy. J Bacteriol 187 3814—3824 TokiwaY, CalabiaBP (2004) Degradation of microbial polyesters. Biotechnol Lett 26 1181-1189 Tokiwa Y, Ugwu CU (2007) Biotechnological production of (R)-3-hydroxybutyric add monomer. J Biotechnol 132 264—272... [Pg.126]

Wang YW, Mo W, Yao H, Wu Q, Chen J, Chen GQ (2004) Biodegradation studies of poly(3-hydroxybutyrate-co-3-hydroxyhexanoate). Polym Degrad Stab 85 815-821 Wang YW, Wu Q, Chen GQ (2003) Reduced mouse fibroblast cell growth by increased hydro-philicity of microbial polyhydroxyalkanoates via hyaluronan coating. Biomaterials 24 4621 629... [Pg.128]

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See also in sourсe #XX -- [ Pg.155 , Pg.156 ]



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3-hydroxybutyrate

4- -4-hydroxybutyric

Hydroxybutyrate copolyesters microbial

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