Improvement in Enzymatic Hydrolysis of Waste Office Paper with Chemical Pretreatment and Enzyme Loading Reduced

2016 ◽  
Vol 7 (3) ◽  
pp. 507-512 ◽  
Author(s):  
Helloise Gabrielle da Mota ◽  
Ester Ribeiro Gouveia
Keyword(s):  
Enzymatic Hydrolysis ◽  
Chemical Pretreatment ◽  
Enzyme Loading ◽  
Waste Office Paper ◽  
Hydrolysis Of ◽  
Office Paper

Optimization of thermo-chemical pretreatment and enzymatic hydrolysis of kitchen wastes

2014 ◽  
Vol 34 (1) ◽  
pp. 167-173 ◽  
Author(s):  
Aikaterini I. Vavouraki ◽  
Vassiliki Volioti ◽  
Michael E. Kornaros
Keyword(s):  
Enzymatic Hydrolysis ◽  
Chemical Pretreatment ◽  
Hydrolysis Of

scholarly journals Optimization of Sodium Hydroxide Pretreatment and Enzymatic Hydrolysis of Wheat Straw Powder by Cellulases and Xylanases From Aspergillus Niger HQ-1 Using Response Surface Methodology

2021 ◽  
Author(s):  
Hui Zhang ◽  
Junhui Wu
Keyword(s):  
Response Surface Methodology ◽  
Enzymatic Hydrolysis ◽  
Aspergillus Niger ◽  
Sodium Hydroxide ◽  
Wheat Straw ◽  
Response Surface ◽  
Sodium Hydroxide Solution ◽  
Solid Loading ◽  
Enzyme Loading ◽  
Hydrolysis Of

Abstract To maximize fermentable sugars production, response surface methodology (RSM) was adopted to optimize pretreatment and enzymatic hydrolysis of wheat straw powder (WSP) using the crude cellulases preparation containing xylanases from Aspergillus niger HQ-1. Factors of pretreatment including sodium hydroxide concentration, pretreatment time and temperature were found to have significant effects on sugars production. Results indicated that WSP with particle size 0.3 mm should be pretreated using 1.8% (w/v) sodium hydroxide solution with 25.0% (w/v) of solid loading at 94.0°C for 46.0 min and the optimized pretreatment conditions could result in 90.9% of cellulose recovery, 54.6% of hemicellulose recovery and 72.7% of lignin removal, respectively. Furthermore, variables of enzymatic hydrolysis including enzyme loading, biomass loading and reaction time were proved to have significant effects on sugars yields. After hydrolysis at 50°C for 44.8 h with 7.1% (w/v) of biomass loading, 8.1 FPU/g of enzyme loading and 0.2% (w/v) of Tween-80, maximum yields of reducing sugar (632.92 mg/g) and xylose (149.83 mg/g) could be obtained, respectively. In addition, holocellulose and hemicellulose conversion were 81.6% and 80.0%, respectively. To the best of our knowledge, this is the first report about systematic optimization of sodium hydroxide pretreatment and enzymatic hydrolysis of WSP using RSM.

Effects of enzyme loading and β-glucosidase supplementation on enzymatic hydrolysis of switchgrass processed by leading pretreatment technologies

2011 ◽  
Vol 102 (24) ◽  
pp. 11115-11120 ◽  
Author(s):  
Venkata Ramesh Pallapolu ◽  
Y.Y. Lee ◽  
Rebecca J. Garlock ◽  
Venkatesh Balan ◽  
Bruce E. Dale ◽  
...  
Keyword(s):  
Enzymatic Hydrolysis ◽  
Enzyme Loading ◽  
Hydrolysis Of
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