1 - 10 of 36 articles
AbstractRhodococcus ruber NCIMB 40126 synthesizes copolyesters (polyhydroxyalkanoates) of 3-hydroxybutyrate (3HB) and 3-hydroxyvalerate (3HV), containing primarily 3HV monomer units, from a variety of single, chemically unrelated substrates. The 3HV content of the polymer is dependent on the...
AbstractConventional electron microscopic preparation and imaging techniques applied to the study of the ultrastructure of poly-β-hydroxybutyrate (PHB) (and related compounds) inclusion bodies provided information on cytological aspects such as shape, dimensions, and location of these inclusion...
AbstractTransmission electron microscopy (TEM), differential scanning calorimetry (DSC), wide-angle X-ray powder diffractometry (WAXD) and Fourier transform infrared spectroscopy (FTIR) were used to investigate the crystallization behavior of PHB granules from Alcaligenes eutrophus isolated by...
AbstractIn landfills, deposited waste material is usually faced with strictly anoxic conditions. This means that the design of new biodegradable polymers must take into consideration that degradation should be possible especially in the absence of molecular oxygen. Poly-β-hydroxybutyrate is...
AbstractDegradation of poly(3-hydroxybutyrate) and copolymers with 3-hydroxyvaleric acid was investigated in natural environments, and the microorganisms involved were isolated and identified. The influence of abiotic and biotic factors on the degradation is discussed.
AbstractThe kinetics and mechanism of the synthesis and degradation of polyhydroxyalkanoates (PHA) in Alcaligenes eutrophus have been studied. PHA polymers were accumulated in the cells in nitrogen-free mineral media containing various carbon substrates, and the accumulated PHA polymers were...
AbstractAzospirillum brasilense is a rhizosphere microorganism which has potential use for promoting plant growth in economically important crops. Its ability to survive the adverse conditions imposed by nutrient starvation and competition in the rhizosphere is of great importance. A. brasilense...
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