Evaluation of Fusarium oxysporum as an enzyme factory for the hydrolysis of brewer's spent grain with improved biodegradability for ethanol production

2008 ◽  
Vol 28 (2) ◽  
pp. 213-224 ◽  
Author(s):  
Charilaos Xiros ◽  
Evangelos Topakas ◽  
Petros Katapodis ◽  
Paul Christakopoulos
2019 ◽  
Vol 53 ◽  
pp. 1-8 ◽  
Author(s):  
Tânia Pinheiro ◽  
Eduardo Coelho ◽  
Aloia Romaní ◽  
Lucília Domingues

2012 ◽  
Vol 116 ◽  
pp. 155-160 ◽  
Author(s):  
Piritta Niemi ◽  
Craig B. Faulds ◽  
Juhani Sibakov ◽  
Ulla Holopainen ◽  
Kaisa Poutanen ◽  
...  

2009 ◽  
Vol 100 (23) ◽  
pp. 5917-5921 ◽  
Author(s):  
Charilaos Xiros ◽  
Maria Moukouli ◽  
Evangelos Topakas ◽  
Paul Christakopoulos

2021 ◽  
Vol 55 (1-2) ◽  
pp. 101-112
Author(s):  
CARLA LOBO GOMES ◽  
ELIZABETH GONÇALVES ◽  
CARLOS ALBERTO GALEANO SUAREZ ◽  
DASCIANA DE SOUSA RODRIGUES ◽  
INTI CAVALCANTI MONTANO

Brazil, being one of the main beer producers, generates brewer’s spent grain as a main by-product of this industry, which is mainly composed of cellulose, hemicelluloses, lignin and extractives. The alkaline pretreatment of brewer’s spent grain received from two breweries is studied in this work, namely breweries Imperial (B1) and Colombina (B2). Factorial design (22) was realized with three experiments at the central point: contact time (30, 60, 90 min) and NaOH concentration (4%, 6%, 8%). It was found that the presence of extractives causes interference in the characterization of the material. The delignification process allowed obtaining materials with lower lignin percentages when higher NaOH concentrations were used, reaching percentages of lignin loss with values between 85-95%, in both materials, but for these conditions, the losses of cellulose were considerable – of 35-43%. Enzymatic hydrolysis of the pretreated materials achieved conversions greater than 70%, emphasizing that the greatest conversions were obtained with material B1, where almost the whole cellulose was hydrolyzed.


Sign in / Sign up

Export Citation Format

Share Document