Effect of biological pretreatment with Trametes hirsuta yj9 on enzymatic hydrolysis of corn stover

Biological Pretreatment with White Rot Fungi and Their Co-Culture to Overcome Lignocellulosic Recalcitrance for Improved Enzymatic Digestion

“…Interestingly, the results presented in this study apparently show, in most cases, that more lignin removal resulted in more sugar release. This indicates that sugar yield was inversely proportional to lignin content, which is in good agreement to previous studies (Sun et al 2011;Wan et al 2010).…”

Comparison and evaluation of concurrent saccharification and anaerobic digestion of Napier grass after pretreatment by three microbial consortia

“…Unlike hemicellulose and lignin, the weight of cellulose decreased by less than 20%, which favored for the next saccharification step. This result agreed with that lignin and hemicellulose were degraded faster than cellulose (Sun et al, 2011). Cellulose, hemicellulose and lignin were depolymerized at the initial stage of degradation, the measured loss values only represented the final point of Napier grass degradation process and could not reflect the entire process.…”

“…In general, the results showed that the highest sugar yields under different enzyme loads were achieved from Napier grass residues after 3, 7 or 13 days of the pretreatment, which was a significant improvement in comparison with 18 days that was required in the work of Yu et al (2009), 21 days by fungal pretreatment combined with mild alkali treatment (Salvachúa et al, 2011) and 42 days of biological pretreatment (Sun et al, 2011). The shortened pretreatment time and associated cost reduction would make the three consortia possible for industrial applications.…”

Production of a lignocellulolytic enzyme system for simultaneous bio-delignification and saccharification of corn stover employing co-culture of fungi

“…Although the biological pretreatment has the merit of low cost, safe, less energy-consuming and more environmental friendly, it also has the drawback of long incubation time needed, normally several weeks to months, for reaching cellulose recovery yields similar to those obtained with current physic-chemical pretreatments (Khuong et al, 2014). In addition, the consumption of holocellulose (cellulose and hemicellulose) as carbon resource by microorganism for its growth and metabolic activities, lead to dry mass loss and finally result in the low bioconversion rate (Sun et al, 2011). Taniguchi et al (2005) found that 33% of cellulose in wheat straw was converted to glucose after a 60-d pretreatment with Pleurotus ostreatus.…”

“…To overcome the disadvantages of the microbial pretreatments, the novel lignocellulolytic enzyme system treatment might be an efficient strategy (Sun et al, 2011). At present, the laccase system has been studied most extensively for its superior performance in degrading the lignin of pulped fibers from the paper and pulping industry, as well as in laboratory studies of degradation of synthesized or purified lignin or soluble phenolic monomers (Chen et al, 2012).…”