Dilute-acid pretreatment of barley straw for biological hydrogen production using Caldicellulosiruptor saccharolyticus

2012 ◽  
Vol 37 (16) ◽  
pp. 11727-11734 ◽  
Author(s):  
I.A. Panagiotopoulos ◽  
R.R. Bakker ◽  
T. de Vrije ◽  
P.A.M. Claassen ◽  
E.G. Koukios
Keyword(s):  
Hydrogen Production ◽  
Dilute Acid Pretreatment ◽  
Barley Straw ◽  
Dilute Acid ◽  
Acid Pretreatment ◽  
Caldicellulosiruptor Saccharolyticus ◽  
Biological Hydrogen Production

Dilute acid pretreatment of barley straw and its saccharification and fermentation

2010 ◽  
Vol 150 ◽  
pp. 141-141 ◽  
Author(s):  
Sung Bong Kim ◽  
Ja Hyun Lee ◽  
Sang Jun Lee ◽  
Eun Ji Jang ◽  
Kyeong Keun Oh ◽  
...  
Keyword(s):  
Dilute Acid Pretreatment ◽  
Barley Straw ◽  
Dilute Acid ◽  
Acid Pretreatment

Dilute acid pretreatment of barley straw and its saccharification and fermentation

2011 ◽  
Vol 16 (4) ◽  
pp. 725-732 ◽  
Author(s):  
Sung Bong Kim ◽  
Ja Hyun Lee ◽  
Kyeong Keun Oh ◽  
Sang Jun Lee ◽  
Jin Young Lee ◽  
...  
Keyword(s):  
Dilute Acid Pretreatment ◽  
Barley Straw ◽  
Dilute Acid ◽  
Acid Pretreatment

Effect of dilute acid pretreatment on the conversion of barley straw with grains to fermentable sugars

2013 ◽  
Vol 146 ◽  
pp. 444-450 ◽  
Author(s):  
Ming Yang ◽  
Suvi Kuittinen ◽  
Junhua Zhang ◽  
Markku Keinänen ◽  
Ari Pappinen
Keyword(s):  
Dilute Acid Pretreatment ◽  
Barley Straw ◽  
Fermentable Sugars ◽  
Dilute Acid ◽  
Acid Pretreatment

scholarly journals Understanding the effects of different residual lignin fractions in acid-pretreated bamboo residues on its enzymatic digestibility

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Wenqian Lin ◽  
Jinlai Yang ◽  
Yayue Zheng ◽  
Caoxing Huang ◽  
Qiang Yong
Keyword(s):  
Enzymatic Hydrolysis ◽  
Negative Impact ◽  
Dilute Acid Pretreatment ◽  
Residual Lignin ◽  
Dilute Acid ◽  
Enzymatic Digestibility ◽  
Acid Pretreatment ◽  
Organic Reagents ◽  
Milled Wood Lignin ◽  
Affinity Constants

Abstract Background During the dilute acid pretreatment process, the resulting pseudo-lignin and lignin droplets deposited on the surface of lignocellulose and inhibit the enzymatic digestibility of cellulose in lignocellulose. However, how these lignins interact with cellulase enzymes and then affect enzymatic hydrolysis is still unknown. In this work, different fractions of surface lignin (SL) obtained from dilute acid-pretreated bamboo residues (DAP-BR) were extracted by various organic reagents and the residual lignin in extracted DAP-BR was obtained by the milled wood lignin (MWL) method. All of the lignin fractions obtained from DAP-BR were used to investigate the mechanism for interaction between lignin and cellulase using surface plasmon resonance (SPR) technology to understand how they affect enzymatic hydrolysis Results The results showed that removing surface lignin significantly decreased the yield for enzymatic hydrolysis DAP-BR from 36.5% to 18.6%. The addition of MWL samples to Avicel inhibited its enzymatic hydrolysis, while different SL samples showed slight increases in enzymatic digestibility. Due to the higher molecular weight and hydrophobicity of MWL samples versus SL samples, a stronger affinity for MWL (KD = 6.8–24.7 nM) was found versus that of SL (KD = 39.4–52.6 nM) by SPR analysis. The affinity constants of all tested lignins exhibited good correlations (r > 0.6) with the effects on enzymatic digestibility of extracted DAP-BR and Avicel. Conclusions This work revealed that the surface lignin on DAP-BR is necessary for maintaining enzyme digestibility levels, and its removal has a negative impact on substrate digestibility.

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