Bioprocesos para a produción de combustibles, químicos e polímeros a partires de materiais lignocelulósicos
- López Abelairas, María
- Thelmo Lu Chau Co-director
- Juan Manuel Lema Rodicio Co-director
Defence university: Universidade de Santiago de Compostela
Fecha de defensa: 16 January 2014
- Alexander Steinbüchel Chair
- Gemma M. Eibes Secretary
- María Teresa Moreira Vilar Committee member
- Maria Manuela Regalo Fonseca Committee member
- Eulogio Castro Galiano Committee member
Type: Thesis
Abstract
In this thesis, a biological process for obtaining value-added products from wheat straw, a plentiful lignocellulosic residue in Spain and Europe, is developed. This task involves the development of a biological pretreatment, based on the use of white-rot fungi to degrade lignin and to reach a lignocellulosic biomass modification similar to that found after applying chemical and physico-chemical pretreatments (Chapters 2 and 3), and an enzymatic hydrolysis step, for the conversion of the polysaccharides of the pretreated straw into their corresponding sugar monomers (Chapter 4). Finally, the conversion of sugar monomers into value-added products is performed by using different pathways: an alcoholic fermentation for bioethanol production (Chapter 5) and a bacterial process in which carbon from sugars is stored inside cells as a degradable biopolymer (polyhydroxybutyrate) beside other high value-added compound (ectoine) (Chapter 6).