Abengoa Bioenergia Nuevas Tecnologias, S.a.

María De Los Angeles Bermúdez Alcántara

Antonio Javier Moreno Pérez

Consolación Álvarez Núñez

Noelia Valbuena Crespo

Sandra Gavaldá Martín

Dolores Pérez Gómez

Laura Sánchez Zamorano

Bruno Díez García

Laura Viñas De La Cruz

Ana Isabel Platero Gómez

Javier Rocha Martín

Laura Ledesma García

Francisco Reyes Sosa

Lucía Martín Pérez

Juan Luis Ramos Martín

The invention refers to methods and compositions for stabilizing and increasing the activity of enzymatic mixtures comprising GH61 (PMO or polysaccharide monooxigenase) polypeptides used for the degradation of cellulosic material during the saccharification step of biofuel production processes. This improvement is achieved by the addition of a nickel cation to said enzymatic mixtures before and/or during the saccharification step. Thus, the invention provides compositions comprising PMOs, cellulolytic enzymes and a nickel cation, as well as methods for preparing said compositions and methods for producing fermentable sugars and bioproducts, preferably bioethanol, from cellulosic biomass in which said compositions are used.

Cellulolytic compositions comprising monooxygenase polysaccharide enzymes with improved activity

Growing community of inventors

Seville, Spain

María De Los Angeles Bermúdez Alcántara