High glucose recovery from direct enzymatic hydrolysis of bisulfite-pretreatment on non-detoxified furfural residues

Abstract Calcium peroxide (CaO2) pretreatment was employed to remove lignin and subsequently facilitate enzymatic digestibility of wheat straw. An optimal condition was obtained at 130°C for 10 min with 0.35 g CaO2/g dried material of wheat straw and a 1:8 solid-liquid ratio. Under this condition, 57.8% of initial lignin, 7.2% of initial glucan, and 30.6% of initial xylan were removed from CaO2 pretreatment, respectively, meanwhile, a glucose recovery of 90.6 % and a xylose recovery of 65.9 % were obtained from the subsequent enzymatic hydrolysis of treated wheat straw, respectively. CaO2 pretreatment was proved to be a very effective method in delignification and improving enzymatic digestibility. Compared to raw material, the complex structure of lignocellulose was drastically disrupted with a wide emergence of scaly bulges and fully exposed microfibers, which still retained in the solid.

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Effect of delignification on hemicellulose extraction from switchgrass, poplar, and pine and its effect on enzymatic convertibility of cellulose-rich residues

BioResources ◽

10.15376/biores.13.3.4946-4963 ◽

2018 ◽

Vol 13 (3) ◽

pp. 4946-4963 ◽

Cited By ~ 5

Author(s):

Wenhui Geng ◽

Richard A. Venditti ◽

Joel J. Pawlak ◽

Hou-min Chang

Keyword(s):

High Glucose ◽

Sodium Hydroxide Solution ◽

Enzyme Hydrolysis ◽

Sodium Chlorite ◽

Biomass Feedstocks ◽

Different Types ◽

Carbohydrate Polymer ◽

Extraction Processes ◽

Glucose Recovery ◽

Hydrolysis Of

Hemicellulose is an abundant and underutilized carbohydrate polymer in plants. The objective of this study was to understand the effect of delignification on hemicellulose extraction efficiency with different types of lignocellulosic biomass. In the case of pine, with a prior sodium chlorite or peracetic acid delignification, more than 50% of the original hemicellulose in the biomass could be extracted using a 10% sodium hydroxide solution; without delignification, only 3.4% of hemicellulose could be extracted from pine. In contrast, without prior delignification, acceptable hemicellulose extraction efficiencies (55.5% and 50.7%, respectively) were achieved from switchgrass and poplar. In addition, the effect of hemicellulose extraction processes on the enzymatic convertibility of the cellulose-rich residues after extraction was determined. The cellulose-rich residues from switchgrass after hemicellulose alkali extraction showed high glucose recovery with enzyme hydrolysis with or without prior delignification. For pine and poplar, high glucose recovery with enzyme hydrolysis of the cellulose-rich residues only occurred if the sample had a delignification step prior to hemicellulose extraction. This information on commercially available biomass feedstocks is useful for those considering isolating hemicellulose within a biorefinery concept.

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Improvement of the enzymatic hydrolysis of furfural residues by pretreatment with combined green liquor and hydrogen peroxide

Bioresource Technology ◽

10.1016/j.biortech.2013.08.013 ◽

2013 ◽

Vol 147 ◽

pp. 29-36 ◽

Cited By ~ 34

Author(s):

Hai-Long Yu ◽

Yong Tang ◽

Yang Xing ◽

Li-Wei Zhu ◽

Jian-Xin Jiang

Keyword(s):

Hydrogen Peroxide ◽

Enzymatic Hydrolysis ◽

Green Liquor ◽

Furfural Residues ◽

Hydrolysis Of

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Improvement of Enzymatic Hydrolysis of Whole Slurry from Bisulfite-Pretreated Furfural Residues with Low Enzyme Loading

Journal of Biobased Materials and Bioenergy ◽

10.1166/jbmb.2015.1553 ◽

2015 ◽

Vol 9 (5) ◽

pp. 509-514 ◽

Cited By ~ 2

Author(s):

Tianran Zheng ◽

Yang Xing ◽

Yongmiao Wang ◽

Lingxi Bu ◽

Jianxin Jiang ◽

...

Keyword(s):

Enzymatic Hydrolysis ◽

Enzyme Loading ◽

Furfural Residues ◽

Whole Slurry ◽

Hydrolysis Of

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Effects of Gleditsia saponin on high-solids enzymatic hydrolysis of furfural residues

Industrial Crops and Products ◽

10.1016/j.indcrop.2014.09.055 ◽

2015 ◽

Vol 64 ◽

pp. 209-214 ◽

Cited By ~ 17

Author(s):

Yang Xing ◽

Li Ji ◽

Zhi-ping Liu ◽

Wei-ming Zhang ◽

Jian-xin Jiang

Keyword(s):

Enzymatic Hydrolysis ◽

High Solids ◽

Furfural Residues ◽

Hydrolysis Of

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Improvement of the enzymatic hydrolysis of furfural residues by pretreatment with combined green liquor and ethanol organosolv

Bioresource Technology ◽

10.1016/j.biortech.2014.05.111 ◽

2014 ◽

Vol 167 ◽

pp. 46-52 ◽

Cited By ~ 26

Author(s):

Hailong Yu ◽

Yang Xing ◽

Fuhou Lei ◽

Zhiping Liu ◽

Zuguang Liu ◽

...

Keyword(s):

Enzymatic Hydrolysis ◽

Green Liquor ◽

Furfural Residues ◽

Hydrolysis Of

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Enzymatic Hydrolysis of Furfural Residues Using Crude Trichoderma cellulases

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.236-238.452 ◽

2011 ◽

Vol 236-238 ◽

pp. 452-455

Author(s):

Hui Qin Liu ◽

Yue Feng ◽

Jian Xin Jiang ◽

Li Wei Zhu

Keyword(s):

Enzymatic Hydrolysis ◽

Cellulolytic Enzyme ◽

Cellulose Content ◽

Glucose Yield ◽

Adsorption And Desorption ◽

Cellulase Adsorption ◽

Furfural Residues ◽

Trichoderma Koningii ◽

Trichoderma Pseudokoningii ◽

Hydrolysis Of

The aim of this study was to compare the hydrolytic potential of the cellulase produced byTrichoderma pseudokoningiiand byTrichoderma koningiiin the enzymatic hydrolysis of furfural residues with different cellulose content. The results showed that the glucose yield was improved by increasing the cellulose of the substrates. The maximum glucose yield of 83.7% was obtained when the substrates with cellulose content of 94.92%, which was hydrolyzed by the enzymes produced byTrichoderma pseudokoningii.The cellulolytic enzyme fromTrichoderma pseudokoningiiwas found to have a high hydrolysis capability to the furfural residues and it possessed more efficient adsorption and desorption on the substrates. There was the nonproductive cellulase adsorption onto lignin in the enzymatic hydrolysis of the furfural residues by the cellulase preparations fromT.strains.

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