RT info:eu-repo/semantics/article
T1 A biorefinery based on brewer`s spent grains: Arabinoxylans recovery by microwave assisted pretreatment integrated with butanol production
A1 López Linares, Juan Carlos
A1 Lucas Yagüe, Susana
A1 García Cubero, María Teresa
A1 Jiménez Sevilla, Juan José
A1 Coca Sanz, Mónica
K1 Brewing industry waste
K1 Residuos de la industria cervecera
K1 Biorefinery
K1 Biorrefinería
K1 23 Química
K1 33 Ciencias Tecnológicas
AB This study proposes an integrated biorefinery of brewer's spent grain (BSG) based on the application of a microwave pretreatment to obtain bioproducts, such as arabinoxylans (AX) and an advanced biofuel, such as biobutanol. A prehydrolysate with 17 g/L AX was obtained at 172 °C and 0.38 M NaOH, which were subsequently precipitated using an organosolvent process, recovering 133 kg AX/t BSG. The subsequent enzymatic hydrolysis with endo-xylanases significantly increased the concentration ofoligomers with 2-6 units of xylose. The presence of oligosaccharides with a degree of polymerization (DP) from 3 to 27 was confirmed by MALDI-TOF MS. On the other hand, the pretreated solid residue obtained in the microwave assisted alkaline pretreatment was enzymatically hydrolyzed with cellulases and fermented by Clostridium beijerinckii, producing 9.9 g/L butanol (28 kg butanol/t BSG and 37 kg ABE/t BSG). Thus, the potential for the efficient use of BSG in an integrated biorefinery was demonstrated.
PB Elsevier
SN 0926-6690
YR 2020
FD 2020
LK https://uvadoc.uva.es/handle/10324/47063
UL https://uvadoc.uva.es/handle/10324/47063
LA eng
NO Industrial Crops and Products, 2020, vol. 158, p. 113044
NO Producción Científica
DS UVaDOC
RD 11-jul-2024