Polyhydroxybutyrate Hydroxyvalerate
Mostrando 1-5 de 5 artigos, teses e dissertações.
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1. Agro-industrial residues and starch for growth and co-production of polyhydroxyalkanoate copolymer and α-amylase by Bacillus sp. CFR-67
Polyhydroxyalkanoates (PHA) and α-amylase (α-1,4 glucan-4-glucanohydrolase, E.C. 3.2.1.1) were co-produced by Bacillus sp. CFR-67 using unhydrolysed corn starch as a substrate. Bacterial growth and polymer production were enhanced with the supplementation of hydrolysates of wheat bran (WBH) or rice bran (RBH) individually or in combination (5-20 g L-1, bas
Braz. J. Microbiol.. Publicado em: 2012-09
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2. Characterization of poly-hydroxybutyrate-hydroxyvalerate (PHB-HV)/corn starch blend films / CaracterizaÃÃo de filmes de blenda de polihidroxibutirato-hidroxivalerato (PHB-HV)/amido de milho
Blendas de polihidroxibutirato-hidroxivalerato (PHB-HV) com amido de milho em diferentes concentraÃÃes foram preparadas pelo processo âcastingâ com clorofÃrmio. As propriedades mecÃnica, tÃrmica, morfolÃgica e fÃsico-quÃmica das blendas foram investigadas usando as anÃlises de textura, calorimetria diferencial de varredura, espectroscopia no infra
Publicado em: 2007
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3. Efeitos da radiaÃÃo Gama no polÃmero biodegradÃvel Poli(HIDROXIBUTIRATO) e no copolÃmero Poli(Hidroxibutirato-co-Hidroxivalerato)
Poly(hydroxybutyrate), PHB, is a biodegradable commercial polyester manufactured in Brazil and biosynthesized by Alcaligenes eutrophus bacteria from sugar cane biosynthesis. The great number of petrochemical plastics has brought about attention to biodegradable polymers. PHB is a thermoplastic with good properties and an excellent option as commodity. On the
Publicado em: 2006
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4. Biochemical and molecular characterization of the polyhydroxybutyrate depolymerase of Comamonas acidovorans YM1609, isolated from freshwater.
Comamonas acidovorans YM1609 secreted a polyhydroxybutyrate (PHB) depolymerase into the culture supernatant when it was cultivated on poly(3-hydroxybutyrate) [P(3HB)] or poly(3-hydroxybutyrate-co-3-hydroxyvalerate) [P(3HB-co-3HV)] as the sole carbon source. The PHB depolymerase was purified from culture supernatant of C. acidovorans by two chromatographic me
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5. Occurrence, metabolism, metabolic role, and industrial uses of bacterial polyhydroxyalkanoates.
Polyhydroxyalkanoates (PHAs), of which polyhydroxybutyrate (PHB) is the most abundant, are bacterial carbon and energy reserve materials of widespread occurrence. They are composed of 3-hydroxyacid monomer units and exist as a small number of cytoplasmic granules per cell. The properties of the C4 homopolymer PHB as a biodegradable thermoplastic first attrac