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- W2045273313 abstract "The aim of this research was to evaluate the production and properties of polyhydroxyalcanoates (PHAs) obtained from crude glycerin (CG), a byproduct of the biodiesel industry, by Cupriavidus necator IPT 026. Experiments were carried out in shake flasks to determine the optimum CG (X1) and nitrogen (X2) concentrations to maximize biomass accumulation and biopolymer production. The highest PHA and biomass production (2.81 g L−1 and 4.34 g L−1, respectively) occurred at 15 g L−1 of CG and 10 g L−1 of nitrogen with approximately 65% (w/v) cell accumulation (cell dry weight). Experiment 7 yielded the PHA with the optimum properties (15 g L−1 of CG and 3 g L−1 of nitrogen), which showed a melting temperature of 184.3 °C, crystallinity of 52.23%, thermal degradation occurring between 306.8 °C and 334.1 °C with a peak at 327.4 °C, and its molecular weight was 780 kDa. All experiments PHA production showed FTIR spectra similar to those reported in the literature. The monomeric profile of the produced PHAs showed a composition similar to that of the PHA standard, showing evidence of 3-hydroxybutyrate (3HB) monomer in the analyzed samples. Bacteria can use CG as an inexpensive substrate to produce value-added biodegradable products, such as PHA." @default.
- W2045273313 created "2016-06-24" @default.
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- W2045273313 date "2014-01-01" @default.
- W2045273313 modified "2023-09-26" @default.
- W2045273313 title "The influence of crude glycerin and nitrogen concentrations on the production of PHA by Cupriavidus necator using a response surface methodology and its characterizations" @default.
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- W2045273313 doi "https://doi.org/10.1016/j.indcrop.2013.11.008" @default.
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