Enzymatic hydrolysis of pretreated soybean straw

An in vitro digestion study, a lamb growth trial and a lamb digestion trial were conducted to evaluate the effect of different NaOH and Ca(OH)2 treatments on the energy availability of wheat straw. In vitro dry matter disappearance (IVDMD) of wheat straw was increased 29% by chemical treatment with 1% NaOH plus 3% Ca(OH)2 and by as much as 86% by a 4% NaOH plus 1% Ca(OH)2 treatment. A significant amount of hemicellulose was solubilized by chemical treatment with NaOH and Ca(OH)2, but little cellulose was solubilized. Rate and extent of both hemicellulose and cellulose digestion of treated wheat straw were increased significantly in comparison to corresponding measures for untreated wheat straw. Lambs fed chemically-treated wheat straw gained significantly faster and more efficiently and consumed more dry matter per day than those fed untreated wheat straw diets. Chemical treatment of wheat straw significantly increased dry matter, organic matter cellulose and hemicellulose digestibilities in the lamb digestion trial. Organic matter digestibility was increased from 51.3% for untreated wheat straw to 65.3% for 4% NaOH-treated wheat straw.

Hemicellulose

Digestion

10.2527/jas1980.512263x

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Citations (43)

Hydrothermal CO2-assisted Pretreatment of Wheat Straw for Hemicellulose Degradation Followed with Enzymatic Hydrolysis for Glucose Production

Waste and Biomass Valorization (2020)

Ruizhen Wang Jinfang Yue Jianchun Jiang Jing Li Jiaping Zhao

Hemicellulose

Enzymatic Hydrolysis

Lignocellulosic Biomass

10.1007/s12649-020-01103-4

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Citations (22)

Enzymatic Production of Sugars from Hemicellulose

Enzyme Engineering (1978)

Gbekeloluwa Oguntimein J. R. Frederick Alfred R. Fratzke Mary M. Frederick P. J. Reilly

For many years there has been an intense research effort to unlock the secrets of the enzymatic hydrolysis of cellulose. More recently the breakdown of lignin by enzymes has drawn interest. Comparatively neglected has been the enzymatic hydrolysis of the third major component of cellulosic materials, hemicellulose. Yet no breakdown of native cellulose is likely to be economically feasible without incorporating a means to hydrolyze the hemicelluloses that may comprise up to 30% of the total dry weight.

Hemicellulose

Cellulosic ethanol

Enzymatic Hydrolysis

10.1007/978-1-4684-6985-1_52

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Citations (4)

Modelling the reactions of cellulose, hemicellulose and lignin submitted to hydrothermal treatment

Industrial Crops and Products (2018)

Antonio M. Borrero‐López Éric Masson A. Celzard Vanessa Fierro

Hemicellulose

Hydroxymethylfurfural

Lignocellulosic Biomass

Hydrothermal Carbonization

10.1016/j.indcrop.2018.08.045

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Citations (79)

Pseudo-Lignin Content Decreased with Hemicellulose and Lignin Removal, Improving Cellulose Accessibility, and Enzymatic Digestibility

BioEnergy Research (2020)

Alison Andrei Schmatz Ana María Salazar-Bryam Jonas Contiero Celso Sant’Anna Michel Brienzo

Hemicellulose

10.1007/s12155-020-10187-8

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Citations (36)

Effects of Hemicellulose and Lignin on Enzymatic Hydrolysis of Cellulose from Dairy Manure

Humana Press eBooks (2009)

Wei Liao Zhiyou Wen Sharon Hurley Yan Liu Chuanbin Liu

This study focused on the effect of hemicellulose and lignin on enzymatic hydrolysis of dairy manure and hydrolysis process optimization to improve sugar yield. It was found that hemicellulose and lignin in dairy manure, similar to their role in other lignocellulosic material, were major resistive factors to enzymatic hydrolysis and that the removal of either of them, or for best performance, both of them, improved the enzymatic hydrolysis of manure cellulose. This result combined with scanning electron microscope (SEM) pictures further proved that the accessibility of cellulose to cellulase was the most important feature to the hydrolysis. Quantitatively, fed-batch enzymatic hydrolysis of fiber without lignin and hemicellulose had a high glucose yield of 52% with respect to the glucose concentration of 17 g/L at a total enzyme loading of 1300 FPU/L and reaction time of 160 h, which was better than corresponding batch enzymatic hydrolysis.

Hemicellulose

Enzymatic Hydrolysis

10.1007/978-1-59259-991-2_86

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Citations (1)

Synergistic improvement to dimensional stability of Populus cathay ana via hemicellulose removal/alkali lignin impregnation

Holzforschung (2023)

Meng Yang Runhua Zhang Erni Ma

Abstract Poor dimensional stability restricts the commercial utilization of fast-growing wood. In this study, fast-growing poplar ( Populus cathayana ) was treated by removing hemicellulose with hydrothermal treatment and impregnating alkali lignin via full-cell process, synergistically, for enhanced dimensional stability. After modification, hydroxyl groups were reduced in hemicellulose removed wood (DHC), alkali lignin was observed to fill in the cell lumens of vessels and wood fibers in the impregnated wood (AL) and in the wood modified by hemicellulose removal with alkali lignin impregnation (DHCAL). Compared with untreated wood, the volumetric swelling ratio of DHC and AL decreased by 11 % and 21 % under relative humidity (RH) of 89 %, respectively. The volumetric swelling ratio of DHCAL decreased by over 50 %, indicating a positive synergistic effect. The combination of hemicellulose removal and alkali lignin impregnation treatment improved the dimensional stability of wood significantly by reconstructing wood chemical components with various levels of hygroscopicity. This work could meaningfully contribute to the efficient utilization of fast-growing wood and promote the added value of industrial alkali lignin.

Hemicellulose

10.1515/hf-2022-0147

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Citations (1)