Sequential white-rot and brown-rot fungal pretreatment of wheat straw as a promising alternative for complementary mild treatments

Primer Autor
Cristina Diez, Maria
Co-autores
Hermosilla, Edward#Rubilar, Olga#Schalchli, Heidi#da Silva, Ayla Sant'Ana#Ferreira-Leitao, Viridiana
Título
Sequential white-rot and brown-rot fungal pretreatment of wheat straw as a promising alternative for complementary mild treatments
Editorial
PERGAMON-ELSEVIER SCIENCE LTD
Revista
WASTE MANAGEMENT
Lenguaje
en
Resumen
White-rot and brown-rot fungi have complementary mechanisms to selectively degrade lignin and holocellullose, respectively. Thereby, a fungal co-culture of a white-rot and a brown-rot fungal could result in efficient strategy for a mild lignocellulosic biomass pretreatment. In this work, single, sequential and co-inoculation of the selective-lignin degrading white-rot fungus Ganoderma lobatum and the brown-rot fungus Gloeophyllum trabeum were evaluated as biological pretreatments of wheat straw to enhance enzymatic hydrolysis of cellulose. The single cultures of G. lobatum and G. trabeum exhibited preferential degradation of lignin and hemicellulose, respectively. The total crystallinity index decreased in samples pretreated with G. trabeum but not with G. lobatum. The pretreatment with single cultures of G. lobatum or G. trabeum increased glucose yields by 43.6% and 26.1% respectively compared to untreated straw. Although co-inoculation resulted in higher yields of glucose when compared with single cultures, only a slight synergistic effect between fungi was observed. Contrary, the sequential inoculation of G. lobatum incubated for 10 days followed by G. trabeum incubated for 10 days more showed a strong synergic effect on enzymatic hydrolysis. This sequential culture showed the highest glucose yield (191.5 mg g(-1) wheat straw), 2.8-fold higher than untreated wheat straw, and 140-150% higher than the single-cultures of G. lobatum and G. trabeum, respectively. (C) 2018 Elsevier Ltd. All rights reserved.
Tipo de Recurso
Artículo original
Description
This research was supported by CONICYT Doctoral scholarship 21120634, FAPERJ-UFRO FPJ15-0005 projects and CONICYT/FONDAP/15130015.
Esta investigación fue financiada por la beca de Doctorado CONICYT 21120634, los proyectos FAPERJ-UFRO FPJ15-0005 y CONICYT/FONDAP/15130015.
doi
10.1016/j.wasman.2018.07.044
Formato Recurso
pdf
Palabras Claves
Wheat straw# Agricultural waste# Biological pretreatment# White-rot fungus# Brown-rot fungus# Cellulose hydrolysis
Ubicación del archivo
http://dx.doi.org/10.1016/j.wasman.2018.07.044
Categoría OCDE
Engineering, Environmental# Environmental Sciences
Materias
Paja de trigo# Residuos agrícolas# Pretratamiento biológico# Hongo de pudrición blanca# Hongo de pudrición parda# Hidrólisis de celulosa
Disciplinas de la OCDE
Biotecnología agrícola
Agricultura
Microbiología
Id de Web of Science
WOS:000449133500026
Título de la cita (Recomendado-único)
Sequential white-rot and brown-rot fungal pretreatment of wheat straw as a promising alternative for complementary mild treatments
Identificador del recurso (Mandatado-único)
Artículo original
Versión del recurso (Recomendado-único)
version publicada
Editorial
PERGAMON-ELSEVIER SCIENCE LTD
Revista/Libro
WASTE MANAGEMENT
Categoría WOS
Ingeniería Ambiental# Ciencias Ambientales
ISSN
0956-053X
Idioma
en
Referencia del Financiador (Mandatado si es aplicable-repetible)
ANID CONICYT Doctoral 21120634# FAPERJ-UFRO FPJ15-0005#ANID CONICYT FONDAP 15130015
ANID CONICYT Doctoral scholarship 21120634
FAPERJ-UFRO FPJ15-0005
ANID CONICYT FONDAP 15130015
Descripción
This research was supported by CONICYT Doctoral scholarship 21120634, FAPERJ-UFRO FPJ15-0005 projects and CONICYT/FONDAP/15130015.
Formato
pdf
Tipo de ruta
hibrida#verde
Access Rights
metadata
Derechos de acceso
metadata
Página de inicio (Recomendado-único)
51
Página final (Recomendado-único)
56
Colecciones
Colección Publicaciones Científicas
Revisa las metricas alternativas de Almetrics
Revisa las citaciones de Dimensions