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Poly(3-hydroxybutyrate) (PHB) biosynthesis from soybean oil by Cupriavidus necator was studied using a bench scale bioreactor. The highest cell concentration (83 g l−1) was achieved using soybean oil at 40 g l−1 and a pulse of the same concentration. The PHB content was 81% (w/w), PHB productivity was 2.5 g l−1 h−1, and the calculated Yp/s value was 0.85 g(More)
BACKGROUND In nature, termites can be considered as a model biological system for biofuel research based on their remarkable efficiency for lignocellulosic biomass conversion. Redox enzymes are of interest in second-generation ethanol production because they promote synergic enzymatic activity with classical hydrolases for lignocellulose saccharification(More)
This article gives an overview of high-cell-density cultures for polyhydroxyalkanoate (PHA) production and their modes of operation for increasing productivity. High cell densities are very important in PHA production mainly because this polymer is an intracellular product accumulated in various microorganisms, so a high cellular content is needed for the(More)
The Brazilian Bioethanol Science and Technology Laboratory (CTBE) one of the laboratories of the Brazilian Center of Research in Energy and Materials (CNPEM) has as one of its main goals contribute to the development of the process of obtaining second generation ethanol (GII) mainly from lignin cellulosic fractions of cane sugar. To achieve this goal leads(More)
Rhodotorula glutinis CCT 2182, Rhodosporidium toruloides CCT 0783, Rhodotorula minuta CCT 1751 and Lipomyces starkeyi DSM 70296 were evaluated for the conversion of sugars from Brazilian molasses into single-cell oil (SCO) feedstock for biodiesel. Pulsed fed-batch fermentations were performed in 1.65 l working volume bioreactors. The maximum specific growth(More)
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