Potential production of bioplastics polyhydroxyalkanoates using residual glycerol

Autores

  • Priscilla Barbosa Sales de Albuquerque Centro de Tecnologias Estratégicas do Nordeste (CETENE)
  • Katarynna Santos de Araújo Centro de Tecnologias Estratégicas do Nordeste (CETENE)
  • Kelvin Augusto Azevedo da Silva Centro de Tecnologias Estratégicas do Nordeste (CETENE)
  • Laureen Michelle Houllou Centro de Tecnologias Estratégicas do Nordeste (CETENE)
  • Gabriel Olivo Locatelli Universidade Federal Rural de Pernambuco (UFRPE)
  • Carolina Barbosa Malafaia Centro de Tecnologias Estratégicas do Nordeste (CETENE)

DOI:

https://doi.org/10.24221/jeap.3.1.2018.1701.055-060

Palavras-chave:

biodegradable polymers, biodiesel, Cupriavidus necator, fermentation.

Resumo

Cupriavidus necator was used for polyhydroxyalkanoate (PHA) production with the aim to compare the substrate consumption between pure glycerol (PG) and the glycerol obtained from biodiesel industry (GB). Shake flask experiments were performed with 20 g/L for both the carbon sources, incubated in a shaking incubator at 35 ºC for up to 72 h. At the end, the residual carbon source was analyzed by HPLC, the biomass recuperation for biopolymer extraction and biopolymer characterized by FTIR. The results demonstrated that 35.75 % of PG was consumed during biomass production, while 45.08 % was the value consumed for GB, which can indicate the higher PHA accumulation in GB-sample, as observed by microscopy analyses. Fourier Transform Infrared (FTIR) spectroscopy was performed to confirm the PHA nature of PG and GB samples, and confirmed the establishment of more hydrogen bonds in the PG one, suggesting the surplus of glycerol in the obtained-biopolymer. Since it is interesting the utilization of GB for obtaining added-value products along with biodiesel, this study reported the efficient production of PHA by C. necator using GB as carbon source and its promising use in the bioplastic industry as an alternative product for petrochemical plastics, foreseeing the improvement of a sustainable industry based on biofuels and biopolymers.

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Referências

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Publicado

2018-01-22

Como Citar

Albuquerque, P. B. S. de, Araújo, K. S. de, Silva, K. A. A. da, Houllou, L. M., Locatelli, G. O., & Malafaia, C. B. (2018). Potential production of bioplastics polyhydroxyalkanoates using residual glycerol. Journal of Environmental Analysis and Progress, 3(1), 055–060. https://doi.org/10.24221/jeap.3.1.2018.1701.055-060

Edição

V. 3, N. 1 (2018): Journal of Environmental Analysis and Progress

Seção

Aplied Technology

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