Hydrolysis of sweet blue lupin hull using subcritical water technology

Ciftci, Deniz; Saldaña, Marleny D.A.

doi:10.1016/j.biortech.2015.06.146

Cited by 48 publications

(9 citation statements)

References 29 publications

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“…CrI value increased from 39.75 to 52.79 %. Ciftci and Saldana [37] reported that the crystalline index of sweet blue lupin increased from 11.5% to 58.6% after SCW pretreatment. Mohan et al [39] also reported the crystalline index of the sample increased from 50.55% to 65.83% after pretreatment.…”

Section: Tg Analysismentioning

confidence: 99%

“…Ciftci and Saldana [37] reported that the degradation of lignocellulosic biomass was divided into 4 different temperature ranges: <220 °C, 220-315 °C, 315-400 °C, and >400 °C for moisture, hemicelluloses, cellulose, and lignin decomposition, respectively. Figure 4 shows weight losses at 220-315 °C for the untreated sample and treated sample (80 bar, 150 °C and 40 min) were 22.69% and 14.4%, respectively.…”

Section: Tg Analysismentioning

confidence: 99%

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Enhancing Enzymatic Digestibility of Coconut Husk using Nitrogen-assisted Subcritical Water for Sugar Production

Muharja

Fadhilah

Nurtono

et al. 2019

Bull. Chem. React. Eng. Catal.

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Coconut husk (CCH) as an abundant agricultural waste in Indonesia has the potential to be utilized for sugar production, which is the intermediate product of biofuel. In this study, subcritical water (SCW) assisted by nitrogen (N2) was developed to enhance the enzymatic hydrolysis of CCH. SCW process was optimized by varying the operation condition: the pressure of 60-100 bar, the temperature of 150-190 °C, and the time of 20-60 min. The SCW-treated solid was subsequently hydrolyzed by utilizing a mixture of commercial cellulase and xylanase enzymes. The result shows that the optimum total sugar yield was obtained under the mild condition of SCW treatment, resulting in the sugar of 15.67 % and 10.31 % gained after SCW and enzymatic hydrolysis process, respectively. SEM and FTIR analysis of SCW-treated solid exhibited the deformation of lignin and solubilization of cellulose and hemicellulose, while XRD and TGA revealed an increase of the amount of crystalline part in the solid residue. The use of N2 in SCW treatment combined with enzymatic hydrolysis in this study suggested that the method can be considered economically for biofuel production from CCH waste in commercial scale. Copyright © 2020 BCREC Group. All rights reserved

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Section: Tg Analysismentioning

confidence: 99%

Section: Tg Analysismentioning

confidence: 99%

Enhancing Enzymatic Digestibility of Coconut Husk using Nitrogen-assisted Subcritical Water for Sugar Production

Muharja

Fadhilah

Nurtono

et al. 2019

Bull. Chem. React. Eng. Catal.

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“…The resulting product can thus be a nanofibre. Pressure processing has been shown to be an effective method for removing most non-cellulosic materials, producing a treated fibre composed predominantly of cellulose and residual lignin [13,[72][73][74][75][76][77][78]. Another promising method of processing lignocellulosic material are chemical or biological methods [79][80][81][82][83].…”

Section: Biomassmentioning

confidence: 99%

Availability and Applicability of Wood and Crop Residues for the Production of Wood Composites

Procházka

Hönig

Bouček

et al. 2021

Forests

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Due to high levels of volatility in both the agricultural and the forestry commodity markets, specifically, of timber and agricultural crops, it is important to identify the risks associated with the stability of supplies necessary for the production of composite materials in the Czech Republic. This study aims to accurately estimate the availability of selected raw materials that contain lignocellulose over the next 20 years. In addition, their suitability for the production of composite materials is assessed based on their physical properties. Furthermore, in the event of scarcity involving timber in the European Union, recycled wood and post-harvest residues could replace conventional raw materials in wood-based composites such as particleboards and chipboards. The viable potential of Czech forests is predicted to be between 740 and 750 million cubic meters of timber. For agricultural crops, it is estimated at 0.9 million hectares of wheat and 0.5 million hectares of canola under the current EU biofuel policy and at 0.4 million hectares if this policy is removed. According to moisture and fibre analyses carried out in our study, the most suitable candidate for wood-based composites production is soft wood.

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“…The surface of coconut husk before SCW pretreatment is marked by some boundary edges and does not show the presence of any pores, trenches, or surface cracks, while cracks and trenches can be seen on the surface of the SCW-treated solid. These images of microscopic structures difference demonstrate that the SCW pretreatment could efficiently disintegrate the lignocellulose cell wall, resulting in exposure of internal structure [20]. These crystal structural changes have been managed to expose cellulose to enzyme access and increase the digestibility of enzymatic hydrolysis [22].…”

Section: Characteristic Of Solid Residuementioning

confidence: 99%

Optimization of Subcritical Water Assisted by Nitrogen Prior to Enzymatic Hydrolysis for Reducing Sugar Production

et al. 2020

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The objective of this study is to optimize the three significant parameters of the subcritical water (SCW) process for sugarproduction from coconut husk by using response surface methodology (RSM). In this study, the effect of temperature, reaction time and solvent-feed (S/F) ratio was evaluated and discussed comprehensively. The results showed that the S/F ratio had the most significant effect on sugar yield. The optimal sugar yield was obtained at the highest S/F ratio of 23.4, the shortest time of 4.8 min, and the highest temperature of 183.6 oC of the SCW process. The characterization resultsconfirmed that the lignocellulose structure was changed remarkably then contribute to the efficient processes of enzymatichydrolysis. The parameters evaluation using RSM in this study suggests that SCW hydrolysis could be subjected to commercial purposes.

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Hydrolysis of sweet blue lupin hull using subcritical water technology

Cited by 48 publications

References 29 publications

Enhancing Enzymatic Digestibility of Coconut Husk using Nitrogen-assisted Subcritical Water for Sugar Production

Enhancing Enzymatic Digestibility of Coconut Husk using Nitrogen-assisted Subcritical Water for Sugar Production

Availability and Applicability of Wood and Crop Residues for the Production of Wood Composites

Optimization of Subcritical Water Assisted by Nitrogen Prior to Enzymatic Hydrolysis for Reducing Sugar Production

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