Sugarcane bagasse as a source of carbon for enzyme production by filamentous fungi1

Abstract

-(Sugarcane bagasse as a source of carbon for enzyme production by fi lamentous fungi). The aim of the present work was to assess the enzymatic activity of six strains of fi lamentous fungi grown in liquid media containing 1% sugarcane bagasse as the sole carbon source. All fungal strains were able to use this agro-industrial residue, producing various types of enzymes, such as cellulases, xylanases, amylases, pectinases, and laccases. However, Aspergillus japonicus Saito was the most effi cient producer, showing the highest enzymatic activity for laccase (395.73 U L -1 ), endo-β-1,4-xylanase (3.55 U mL -1 ) and β-xylosidase (9.74 U mL -1 ) at seven, fourteen and twenty-one days in culture, respectively. Furthermore, the endo-β-1,4-xylanases and β-xylosidases of A. japonicus showed maximum activity at 50°C, and pH 5.5 and pH 3.5-4.5, respectively. Thus, these results indicate that A. japonicus has a great biotechnological potential for the production of these enzymes using sugarcane bagasse as the sole source of carbon.

Ultrasonically-Assisted Dissolution of Sugarcane Bagasse during Dilute Acid Pretreatment: Experiments and Kinetic Modeling

“…Bagasse may be stored for long periods and is usually used to produce heat and electricity through combustion [7]. It may be used as a substrate for microbial production of products such as enzymes, organic acids, amino acids, protein rich animal feed, and as a source of carbon for the growth of filamentous fungi [8]. Filamentous fungi are useful producers of enzymes due to the high production level of enzymes and the ease of cultivation [8].…”

“…It may be used as a substrate for microbial production of products such as enzymes, organic acids, amino acids, protein rich animal feed, and as a source of carbon for the growth of filamentous fungi [8]. Filamentous fungi are useful producers of enzymes due to the high production level of enzymes and the ease of cultivation [8]. This type of fungi produces high levels of polysaccharide-degrading enzymes and are used to produce lignin modifying enzymes and industrial enzymes (e.g., amylases and cellulase) [8].…”

“…Filamentous fungi are useful producers of enzymes due to the high production level of enzymes and the ease of cultivation [8]. This type of fungi produces high levels of polysaccharide-degrading enzymes and are used to produce lignin modifying enzymes and industrial enzymes (e.g., amylases and cellulase) [8]. These enzymes may be utilized in industrial processes to eliminate the use of extreme pH and high temperatures, while providing increased product purity [8].…”

“…This type of fungi produces high levels of polysaccharide-degrading enzymes and are used to produce lignin modifying enzymes and industrial enzymes (e.g., amylases and cellulase) [8]. These enzymes may be utilized in industrial processes to eliminate the use of extreme pH and high temperatures, while providing increased product purity [8]. These enzymes also have a variety of biotechnological applications such as the production of food for animals and in the production of textiles, paper, and detergents [8].…”

“…These enzymes may be utilized in industrial processes to eliminate the use of extreme pH and high temperatures, while providing increased product purity [8]. These enzymes also have a variety of biotechnological applications such as the production of food for animals and in the production of textiles, paper, and detergents [8].…”