4.7 Article

Improving corn stover enzymatic saccharification via ferric chloride catalyzed dimethyl sulfoxide pretreatment and various additives

Journal

INDUSTRIAL CROPS AND PRODUCTS
Volume 140, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.indcrop.2019.111663

Keywords

Corn stover; FeCl3-catalyzed DMSO pretreatment; Enzymatic hydrolysis; Additives

Funding

  1. Scientific Research Start-up Funds of Nanjing Forestry University [163105043]

Ask authors/readers for more resources

A FeCl3-catalyzed dimethyl sulfoxide (DMSO) pretreatment was developed and used for enhancing corn stover enzymatic hydrolysis in this work. The results showed that the proposed pretreatment could not only selectively extract up to (similar to)100% of hemicellulose, but also remove a certain amount of lignin ((similar to)36.4%), which finally resulted the pretreated corn stover became loose and easy for subsequent cellulase hydrolysis. Besides, the influence of various additives including Polyethylene glycol (PEG 600), Bovine serum albumin (BSA), and Tween 80 on pretreated solid enzymatic saccharification were also investigated and the result indicated that all tested additives presented positive effect to enhance the glucose yields. However, this improvement of glucose yield via extra additives was decreased as the enzyme loading increase or hydrolysis time extending. Furthermore, the addition of the above additives enable a reduction of enzyme loading by 50% or shortening of hydrolysis time to 12 h. The maximum glucose yield of this work was 90.2% (based on initial glucan in corn stover) and achieved when the pretreatment was performed at 120 degrees C for 45 min with 0.05 mol.L-1 FeCl3 and the enzymatic hydrolysis was performed at 50 degrees C for 72 h with 5% solid loading. It can be concluded that FeCl3-catalyzed DMSO pretreatment is an effective approach to remove hemicelluloses and lignin and disrupt the cell wall stricture, leading to the improvement of corn stover enzymatic hydrolysis.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available