CEFOBI   05405
CENTRO DE ESTUDIOS FOTOSINTETICOS Y BIOQUIMICOS
Unidad Ejecutora - UE
artículos
Título:
Evaluation of biological pretreatments to increase the efficiency of the saccharification process using Spartina argentinensis as a biomass resource
Autor/es:
LARRÁN, A.; JOZAMI, E.; VICARIO, L.R.; FELDMAN, S.R.; PODESTÁ, F.E.; PERMINGEAT, H.
Revista:
BIORESOURCE TECHNOLOGY
Editorial:
ELSEVIER SCI LTD
Referencias:
Lugar: Amsterdam; Año: 2015 vol. 1994 p. 320 - 325
ISSN:
0960-8524
Resumen:
Second generation bioethanol obtained from native perennial grasses offers a promising alternative for
biofuel production, avoiding land use competition for crops production. Spartina argentinensis is a native
perennial C4 grass with high photosynthetic rates, well adapted to halo-hydromorphic soils, though its
forage quality (palatability and digestibility) for livestock is quite low due to its high lignin content.
Hence, cattle raisers burn these grasslands frequently in order to stimulate the emergence of new leaves
with higher digestibility for cattle feeding. Lignin is the main barrier to overcome in order to efficiently
hydrolyze the cellulose for bioethanol production. In this work, we evaluate different pretreatments
(phosphoric acid, ligninolytic enzymes and fungal supernatants) aimed to remove lignin and improving
cellulose hydrolysis efficiency. Results show that pretreatment with Pycnoporus sanguineus supernatant
improves fermentable carbohydrates availability, compared with a conventional chemical pretreatment,
and that 56.84% of cellulose can be hydrolyzed using this pretreatment.