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Polyhydroxyalkanoate Synthesis by Burkholderia glumae into a Sustainable Sugarcane Biorefinery Concept.
de Paula, Carolina Bilia Chimello; de Paula-Elias, Fabrício Coutinho; Rodrigues, Marcela Nogueira; Coelho, Luciana Fontes; de Oliveira, Nayra Morgana Lima; de Almeida, Alex Fernando; Contiero, Jonas.
Afiliação
  • de Paula CBC; Institute for Research in Bioenergy, São Paulo State University, Rio Claro, Brazil.
  • de Paula-Elias FC; Graduate Program on Food Science and Technology, Federal University of Tocantins, Palmas, Brazil.
  • Rodrigues MN; Institute of Biosciences, São Paulo State University, Rio Claro, Brazil.
  • Coelho LF; Institute of Biosciences, São Paulo State University, Rio Claro, Brazil.
  • de Oliveira NML; Graduate Program on Food Science and Technology, Federal University of Tocantins, Gurupi, Brazil.
  • de Almeida AF; Graduate Program on Food Science and Technology, Federal University of Tocantins, Gurupi, Brazil.
  • Contiero J; Institute for Research in Bioenergy, São Paulo State University, Rio Claro, Brazil.
Front Bioeng Biotechnol ; 8: 631284, 2020.
Article em En | MEDLINE | ID: mdl-33520976
Polyhydroxyalkanoate (PHA) bioplastic was synthesized by Burkholderia glumae MA13 from carbon sources and industrial byproducts related to sugarcane biorefineries: sucrose, xylose, molasses, vinasse, bagasse hydrolysate, yeast extract, yeast autolysate, and inactivated dry yeast besides different inorganic nitrogen sources. Sugarcane molasses free of pre-treatment was the best carbon source, even compared to pure sucrose, with intracellular polymer accumulation values of 41.1-46.6% cell dry weight. Whereas, xylose and bagasse hydrolysate were poor inducers of microbial growth and polymer synthesis, the addition of 25% (v/v) sugarcane vinasse to the culture media containing molasses was not deleterious and resulted in a statistically similar maximum polymer content of 44.8% and a maximum PHA yield of 0.18 g/g, at 34°C and initial pH of 6.5, which is economic and ecologically interesting to save water required for the industrial processes and especially to offer a fermentative recycling for this final byproduct from bioethanol industry, as an alternative to its inappropriate disposal in water bodies and soil contamination. Ammonium sulfate was better even than tested organic nitrogen sources to trigger the PHA synthesis with polymer content ranging from 29.7 to 44.8%. GC-MS analysis showed a biopolymer constituted mainly of poly(3-hydroxybutyrate) although low fractions of 3-hydroxyvalerate monomer were achieved, which were not higher than 1.5 mol% free of copolymer precursors. B. glumae MA13 has been demonstrated to be adapted to synthesize bioplastics from different sugarcane feedstocks and corroborates to support a biorefinery concept with value-added green chemicals for the sugarcane productive chain with additional ecologic benefits into a sustainable model.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Front Bioeng Biotechnol Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Brasil País de publicação: Suíça
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Front Bioeng Biotechnol Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Brasil País de publicação: Suíça