Cellulase Hydrolysis of Rice Straw and Inactivation of Endoglucanase in Urea Solution

2011 ◽  
Vol 59 (20) ◽  
pp. 10971-10975 ◽  
Author(s):  
Yi-Ming Tao ◽  
Xin-Qi Xu ◽  
Su-Juan Ma ◽  
Ge Liang ◽  
Xiao-Bing Wu ◽  
...  
Keyword(s):  
Rice Straw ◽  
Urea Solution ◽  
Hydrolysis Of ◽  
Cellulase Hydrolysis

scholarly journals Generation of highly amenable cellulose-Iβ via selective delignification of rice straw using a reusable cyclic ether-assisted deep eutectic solvent system

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Chiranjeevi Thulluri ◽  
Ravi Balasubramaniam ◽  
Harshad Ravindra Velankar
Keyword(s):  
Enzymatic Hydrolysis ◽  
Rice Straw ◽  
Deep Eutectic Solvent ◽  
Solvent System ◽  
Cyclic Ether ◽  
Cellulolytic Enzymes ◽  
Ammonium Bromide ◽  
Selective Delignification ◽  
Cellulose Iβ ◽  
Hydrolysis Of

AbstractCellulolytic enzymes can readily access the cellulosic component of lignocellulosic biomass after the removal of lignin during biomass pretreatment. The enzymatic hydrolysis of cellulose is necessary for generating monomeric sugars, which are then fermented into ethanol. In our study, a combination of a deep eutectic (DE) mixture (of 2-aminoethanol and tetra-n-butyl ammonium bromide) and a cyclic ether (tetrahydrofuran) was used for selective delignification of rice straw (RS) under mild conditions (100 °C). Pretreatment with DE-THF solvent system caused ~ 46% delignification whereas cellulose (~ 91%) and hemicellulose (~ 67%) recoveries remained higher. The new solvent system could be reused upto 10 subsequent cycles with the same effectivity. Interestingly, the DE-THF pretreated cellulose showed remarkable enzymatic hydrolysability, despite an increase in its crystallinity to 72.3%. Contrary to conventional pretreatments, we report for the first time that the enzymatic hydrolysis of pretreated cellulose is enhanced by the removal of lignin during DE-THF pretreatment, notwithstanding an increase in its crystallinity. The current study paves way for the development of newer strategies for biomass depolymerization with DES based solvents.

Enzymatic Hydrolysis of Ammonia-Treated Rice Straw

2003 ◽  
Vol 105 (1-3) ◽  
pp. 155-164 ◽  
Author(s):  
Betzabé Sulbarán-De-Ferrer ◽  
Marielena Aristiguieta ◽  
Bruce E. Dale ◽  
Alexis Ferrer ◽  
Graciela Ojeda-De-Rodriguez
Keyword(s):  
Enzymatic Hydrolysis ◽  
Rice Straw ◽  
Hydrolysis Of

Microwave-enhanced sub-critical hydrolysis of rice straw to produce reducing sugar catalyzed by ionic liquid

2017 ◽  
Vol 20 (2) ◽  
pp. 1364-1370 ◽  
Author(s):  
Jinyang Chen ◽  
Chao Zhang ◽  
Mingli Li ◽  
Jingmin Chen ◽  
Yingdi Wang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Rice Straw ◽  
Reducing Sugar ◽  
Hydrolysis Of

Enhanced enzymatic hydrolysis of rice straw by removal of phenolic compounds using a novel laccase from yeast Yarrowia lipolytica

2012 ◽  
Vol 123 ◽  
pp. 636-645 ◽  
Author(s):  
Kyoung-Mi Lee ◽  
Dayanand Kalyani ◽  
Manish Kumar Tiwari ◽  
Tae-Su Kim ◽  
Saurabh Sudha Dhiman ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Enzymatic Hydrolysis ◽  
Rice Straw ◽  
Yarrowia Lipolytica ◽  
Hydrolysis Of ◽  
Yeast Yarrowia Lipolytica

scholarly journals Cellulase Hydrolysis of Wood Pulps

Sen-ito Kogyo ◽  
1971 ◽  
Vol 4 (1) ◽  
pp. 22-27
Author(s):  
YOSHITAKA OGIWARA ◽  
KENICHIRO ARAI
Keyword(s):  
Wood Pulps ◽  
Hydrolysis Of ◽  
Cellulase Hydrolysis

Investigation of Alkaline Hydrogen Peroxide in Aqueous Organic Solvent to Enhance Enzymatic Hydrolysis of Rice Straw

2020 ◽  
Author(s):  
Jaruwan Damaurai ◽  
Thanchanok Preechakun ◽  
Marisa Raita ◽  
Verawat Champreda ◽  
Navadol Laosiripojana
Keyword(s):  
Hydrogen Peroxide ◽  
Enzymatic Hydrolysis ◽  
Organic Solvent ◽  
Rice Straw ◽  
Alkaline Hydrogen Peroxide ◽  
Hydrolysis Of

scholarly journals Enzymatic Hydrolysis of Rice Straw to Fermentable Sugar: Kinetic Study

2014 ◽  
Vol 27 (2) ◽  
pp. 20-24
Author(s):  
Pradip Saha ◽  
MR Khan ◽  
TK Deb ◽  
S Majumdar ◽  
F Alam ◽  
...  
Keyword(s):  
Rice Straw ◽  
Chemical Engineering ◽  
Heterogeneous Reaction ◽  
Glucose Production ◽  
Modern World ◽  
Absolute Deviation ◽  
New Era ◽  
Hydrolysis Of Cellulose ◽  
Promising Source ◽  
Hydrolysis Of

As the gradual up-growing trend of industrialization and urbanization leading steady increment of demand of energy; eco-friendly, bio degradable, cost competitive and promising source of energy with high sustainability is toughly needed for the new era of modern world. Hydrolysis of cellulose by cellulase enzymes is a vital candidate for this option. It is a solid-liquid heterogeneous reaction; strongly affected by the non-reaction resistances caused most notably by the crystalline structure; reaction environment parameters as temperature, pH, characteristics of enzyme, cell & substrate loading and hence must have to be defined for specific enzyme-substrate amalgamation. In this present investigation, glucose was produced from rice straw using cellulytic enzyme pseudomonas sp., isolated from municipal solid waste. Glucose yield was found to increase as the rice straw particle size decreased from 0.5 mm to 45 ?m, while the optimal temperature and pH were found within the range of 30°C and 7.0 respectively. The concentration and rate of glucose production was observed to depend on pretreatment of rice straw, substrate concentration and enzyme loading. A kinetic model rate expression has been developed for such a process based on the Michaelis – Mentens and Line weaver–Burk approach. Comparison between the experimental data and those predicted from the rate model indicate good agreement with a mean absolute deviation of about 0.304916. DOI: http://dx.doi.org/10.3329/jce.v27i2.17778 Journal of Chemical Engineering, IEB Vol. ChE. 27, No. 2, December 2012: 20-24

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