Production of xylose and glucose from rapeseed straw in subcritical water – Use of Doehlert design for optimizing the reaction conditions

Pińkowska, Hanna; Wolak, Paweł; Oliveros, Esther

doi:10.1016/j.biombioe.2013.09.005

Cited by 21 publications

(11 citation statements)

References 35 publications

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“…The extraction was performed at pressures corresponding to or slightly exceeding the vapour pressure at a given temperature in all experimental runs. At the end of the programmed holding time, the vessel was cooled to approximately 60 °C within 5–10 min and, after the system was expanded, the vessel was emptied and rinsed with water, to reach the final volume of the water-soluble product fraction of 250 mL [28].…”

Section: Methodsmentioning

confidence: 99%

Pectin and Neutral Monosaccharides Production during the Simultaneous Hydrothermal Extraction of Waste Biomass from Refining of Sugar—Optimization with the Use of Doehlert Design

et al. 2019

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We propose a one-stage hydrothermal extraction of sugar beet pulp leading to effective co-production of pectin and neutral monosaccharides with a relatively high yield and satisfactory purity without the presence of an acidic catalyst. The optimal experimental design methodology was used for modelling and optimizing the yield of pectin and neutral monosaccharides. In good agreement with experimental results (R2 = 0.955), the model predicts an optimal yield of pectin (approx. 121.1 g kg−1 ± 0.47 g kg−1) at a temperature and time of about 118.1 °C and 21.5 min, respectively. The highest yield of the sum of neutral monosaccharides (approx. 82.6 g kg−1 ± 0.72 g kg−1) was obtained at about 116.2 °C and 26.4 min (R2 = 0.976). The obtained results are suitable for industrial upscaling and may provide an incentive to implement a new, environmentally friendly, simple, and effective method for treating waste product from the sugar refining industry, which has proved onerous until now.

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Section: Methodsmentioning

confidence: 99%

Pectin and Neutral Monosaccharides Production during the Simultaneous Hydrothermal Extraction of Waste Biomass from Refining of Sugar—Optimization with the Use of Doehlert Design

et al. 2019

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“…Tables 3 and 4 show the results of experimental studies of subcritical and supercritical hydrolysis of model compounds (cellulose, hemicellulose, and starch) and agricultural and agricultural residues, respectively. Several studies of the depolymerization of cellulose in subcritical and supercritical water have been performed at temperatures above 200°C and pressures above its saturated pressure, and particularly in near-critical water, with the objective of providing a suitable reaction environment for the breakdown of its glycosidic bonds, which are highly resistant to chemical attack [15], [16], [81][82][83][84][85][86][87][88][89][90][91][92][93][94][95]. Hydrolysis of cellulose results in oligomers with various degrees of polymerization, including insoluble oligomers (DP < 200) and soluble oligomers (DP < 6).…”

Section: Hydrothermal Treatment Of Lignocellulosic Biomassesmentioning

confidence: 99%

Obtaining Oligo- and Monosaccharides from Agroindustrial and Agricultural Residues Using Hydrothermal Treatments

Cárdenas‐Toro¹,

Alcázar-Alay²,

Forster‐Carneiro³

et al. 2014

fph

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Agricultural and agroindustrial residues are major sources of cellulose, hemicellulose, and starch that can be converted into bioactive compounds, such as oligosaccharides and monosaccharides, using various chemical and biological methods. These bioactive compounds can be used as raw materials by food, cosmetic and pharmaceutical industries, as well as in the production of intermediate products and the development of biomaterials by chemical industries. In Brazil, the major industrial residues, which are corn residues, soybean residues, sugarcane bagasse, palm and coconut fibers, and grape and tomato seeds, among others, are produced at a rate of approximately of 600 million tons per year. Thus, the utilization of these residues using sustainable technology is of great interest. Hydrothermal treatment is a green technology that includes autohydrolysis as well as subcritical and supercritical hydrolysis, in which water is used at high pressures and temperatures to recover polysaccharides from complex vegetal matrices. The hydrolytic mechanisms can be improved by changing the ionic product or the polarity and electrical conductivity of water in subcritical and supercritical states. These properties promote the selective dissolution of the starch, hemicellulose and cellulose in the residues. The conversion of starch and hemicellulose into oligosaccharides and monosaccharides is preferentially performed at temperatures of less than 200°C. In contrast, the conversion of cellulose into oligosaccharides is promoted at temperatures greater than 200°C, with the highest amount oligosaccharide formation occurring at close to the critical point. In this article, the main biomass components, the properties of water under subcritical and supercritical conditions, and the latest studies of polysaccharide conversion in biomasses using hydrothermal treatments are reviewed.

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“…Compared with other biomass derived feedstock, glucose has advantageously less reduction process than other biomass feedstock [6]. It can be produced from cellulose and hemicellulose by acid hydrolysis in hydrothermal ways [33]. The glucose taking APR process follows the equations below.…”

Section: Glucosementioning

confidence: 99%

Renewable Hydrogen Produced from Different Renewable Feedstock by Aqueous-Phase Reforming Process

Wei¹,

Lei²,

Liu³

et al. 2014

JSBS

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Aqueous phase reforming (APR) of biomass derived feedstock producing hydrogen was reviewed. The APR process was discussed based on different feedstock categories such as sugars, polyols and ethanol. The mechanism of APR was analyzed referring to different structures of feedstock. The reaction pathways of APR were investigated. The usage of catalysts should be judged by feedstock on the requirement including C-C bond cleavage, water-gas shift (WGS) reaction, and catalyst maintenance. The prospects were concluded based on the recent works from bimetallic catalysts and high efficient supports. Examples of significant challenges of reducing catalyst cost and increasing catalyst stability have been discussed. The modification and utilization of alkane selectivity of APR processes for liquid fuel production was also investigated.

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Production of xylose and glucose from rapeseed straw in subcritical water – Use of Doehlert design for optimizing the reaction conditions

Cited by 21 publications

References 35 publications

Pectin and Neutral Monosaccharides Production during the Simultaneous Hydrothermal Extraction of Waste Biomass from Refining of Sugar—Optimization with the Use of Doehlert Design

Pectin and Neutral Monosaccharides Production during the Simultaneous Hydrothermal Extraction of Waste Biomass from Refining of Sugar—Optimization with the Use of Doehlert Design

Obtaining Oligo- and Monosaccharides from Agroindustrial and Agricultural Residues Using Hydrothermal Treatments

Renewable Hydrogen Produced from Different Renewable Feedstock by Aqueous-Phase Reforming Process

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