Pretreatment refining leads to constant particle size distribution of lignocellulose biomass in enzymatic hydrolysis

Gu, Hanqi; An, Ruixin; Bao, Jie

doi:10.1016/j.cej.2018.06.145

Cited by 43 publications

(7 citation statements)

References 29 publications

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“…As shown in Table 2, particle sizes of AHP SCF samples were larger than those of untreated-SCF samples. The particle size of AHP SCF samples increased from 0.5 h to 1 h but then decreased slightly as the treatment time increased to 5 h. This agrees with a study done by Gu et al [34], which indicated that reduction in particle size was due to the delignification effect of AHP on corn stover and wheat straw. Additionally, this correlated with its WHC since a positive correlation usually exists between the particle size and the WHC of SCF [35].…”

Section: Resultssupporting

confidence: 91%

Effects of Incorporating Alkaline Hydrogen Peroxide Treated Sugarcane Fibre on The Physical Properties and Glycemic Potency of White Bread

Halim

Taheri

Yassin

et al. 2023

Foods

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The consumption of dietary fibres can affect glycemic power and control diabetes. Sugarcane fibre (SCF) is known as insoluble dietary fibre, the properties of which can be affected by physical, chemical, and enzymatic treatments. In this study, alkaline hydrogen peroxide (AHP) treatments were conducted over time (0.5, 1, 3, and 5 h) at 12.6% (w/v) SCF and the effects on the physicochemical and structural properties of the SCF were evaluated. After making dough and bread with the SCF, with and without AHP treatments, the glycemic responses of the bread samples were evaluated. Shorter durations of AHP treatment (0.5 and 1 h) reduced lignin effectively (37.3 and 40.4%, respectively), whereas AHP treatment at 1 and 3 h duration was more effective in increasing particle sizes (50.9 and 50.1 μm, respectively). The sugar binding capacity, water holding capacity (from 2.98 to 3.86 g water/g SCF), and oil holding capacity (from 2.47 to 3.66 g oil/g SCF) increased in all AHP samples. Results from Fourier-transform infrared spectroscopy (FTIR) confirmed the polymorphism transition of cellulose (cellulose I to cellulose II). The morphology of SCF detected under scanning electron microscopy (SEM) indicated the conversion of the surface to a more porous, rough structure due to the AHP treatment. Adding SCF decreased dough extensibility but increased bread hardness and chewiness. All SCF-incorporated bread samples have reduced glycemic response. Incorporation of 1, 3, and 5 h AHP-treated SCF was effective in reducing the glycemic potency than 0.5 h AHP-treated SCF, but not significantly different from the untreated SCF. Overall, this study aims to valorize biomass as AHP is commonly applied to bagasse to produce value-added chemicals and fuels.

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Section: Resultssupporting

confidence: 91%

Effects of Incorporating Alkaline Hydrogen Peroxide Treated Sugarcane Fibre on The Physical Properties and Glycemic Potency of White Bread

Halim

Taheri

Yassin

et al. 2023

Foods

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“…The particle size of lignocellulosic biomass plays an important role in the efficiency of the hydrolysis process, which affects its reaction rate and mass transfer, as well as the fermentation process. Structural changes of lignocellulosic biomass can be done with cutting, grinding, milling, and extrusion, which enhance the enzyme–cellulose affinity and therefore increases the rate of hydrolysis [ 91 ]. Particle size affects the kinetics diffusion and the pretreatment efficiency, sugar yield, as well as the removal of lignin.…”

Section: Enzymatic Hydrolysismentioning

confidence: 99%

Bioethanol Production by Enzymatic Hydrolysis from Different Lignocellulosic Sources

2021

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As the need for non-renewable sources such as fossil fuels has increased during the last few decades, the search for sustainable and renewable alternative sources has gained growing interest. Enzymatic hydrolysis in bioethanol production presents an important step, where sugars that are fermented are obtained in the final fermentation process. In the process of enzymatic hydrolysis, more and more new effective enzymes are being researched to ensure a more cost-effective process. There are many different enzyme strategies implemented in hydrolysis protocols, where different lignocellulosic biomass, such as wood feedstocks, different agricultural wastes, and marine algae are being used as substrates for an efficient bioethanol production. This review investigates the very recent enzymatic hydrolysis pathways in bioethanol production from lignocellulosic biomass.

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“…Generally, the contact of enzymes with biomass was obviously affected by the particle size and surface area of the substrate. According to previous literature, enzymatic hydrolysis yield was less influenced by some lignocellulosic biomass, like corn stover with particle size fractions from 1420, 690, 340 to 210 μm, while the enzymatic process could shrink biomass particles to constant size of 20–30 μm 18,19 . Therefore, the influence of particle size of Eucalyptus sawdust was tested, under the pretreatment conditions of 50 vol % aqueous ethanol, 160 °C, 60 min, biomass/liquid ratio of 1 g/20 mL, and with or without 20% solid acid, while the pretreatment and enzymatic hydrolysis results were plotted in Fig.…”

Section: Resultsmentioning

confidence: 99%

Combination of ethanol and Fe₃O₄@C‐SO₃H pretreatment of Eucalyptus for glucose release via enzymatic saccharification

Luo

Qian

Zhu

et al. 2020

J of Chemical Tech & Biotech

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BACKGROUND Enzymatic hydrolysis of lignocellulose is regarded as the most efficient route to producing fermentable sugars, one kind of promising future biofuel, while physiochemical pretreatment is the initial but most critical step for the efficient utilization of lignocellulose. RESULTS In this study, a recoverable carbonaceous solid acid catalyst Fe3O4@C‐SO3H was used in combined organosolv pretreatment of Eucalyptus biomass at 140–180 °C with 50 vol% ethanol. The introduction of solid acid in ethanol pretreatment remarkably alleviated the requirement of smaller biomass size, but provided less influence on cellulosic degradation, which benefited the subsequent enzymatic hydrolysis to glucose. After the pretreatment using 50 vol% ethanol and 20% catalyst at 160 °C, 60.3% hemicellulose and 52.6% lignin were removed from Eucalyptus (75–250 μm) within 60 min, which resulted in a cellulose retention ratio of >90% and improved hydrolysis efficiency by nearly 20 and 2 folds, respectively, compared to untreated and ethanol pretreated materials. CONCLUSION This study explored a novel pretreatment technique to improve the efficiency of enzymatic saccharification. It also demonstrated that the hydrolysis yield of cellulose had significantly positive correlation with the removal of lignin and hemicellulose in Eucalyptus, but was less affected by cellulose crystallinity. © 2020 Society of Chemical Industry

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Pretreatment refining leads to constant particle size distribution of lignocellulose biomass in enzymatic hydrolysis

Cited by 43 publications

References 29 publications

Effects of Incorporating Alkaline Hydrogen Peroxide Treated Sugarcane Fibre on The Physical Properties and Glycemic Potency of White Bread

Effects of Incorporating Alkaline Hydrogen Peroxide Treated Sugarcane Fibre on The Physical Properties and Glycemic Potency of White Bread

Bioethanol Production by Enzymatic Hydrolysis from Different Lignocellulosic Sources

Combination of ethanol and Fe₃O₄@C‐SO₃H pretreatment of Eucalyptus for glucose release via enzymatic saccharification

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Pretreatment refining leads to constant particle size distribution of lignocellulose biomass in enzymatic hydrolysis

Cited by 43 publications

References 29 publications

Effects of Incorporating Alkaline Hydrogen Peroxide Treated Sugarcane Fibre on The Physical Properties and Glycemic Potency of White Bread

Effects of Incorporating Alkaline Hydrogen Peroxide Treated Sugarcane Fibre on The Physical Properties and Glycemic Potency of White Bread

Bioethanol Production by Enzymatic Hydrolysis from Different Lignocellulosic Sources

Combination of ethanol and Fe3O4@C‐SO3H pretreatment of Eucalyptus for glucose release via enzymatic saccharification

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Product

Resources

About

Combination of ethanol and Fe₃O₄@C‐SO₃H pretreatment of Eucalyptus for glucose release via enzymatic saccharification