Production of xylo-oligosaccharides from wheat straw using microwave assisted deep eutectic solvent pretreatment

İşçi, Aslı; Thieme, Nils; Lamp, Anne; Zverlov, Vladimir V.; Kaltschmitt, Martin

doi:10.1016/j.indcrop.2021.113393

Cited by 39 publications

(18 citation statements)

References 50 publications

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“…The abundance and characteristics of wheat straw have allowed its exploitation as a source of cellulose, lignin, bioethanol, bio-insulation, prebiotics, etc. [ 27 , 28 , 29 , 30 , 31 ], highlighting its potential as a source of biopolymers to be valorized in the production of lignocellulosic-based materials through biorefinery processes [ 32 , 33 , 34 ].…”

Section: Introductionmentioning

confidence: 99%

Cellulose Nanofiber-Based Aerogels from Wheat Straw: Influence of Surface Load and Lignin Content on Their Properties and Dye Removal Capacity

et al. 2022

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Water pollution is one of the most serious problems worldwide. Nanocellulose-based aerogels usually show excellent adsorption capacities due to their high aspect ratio, specific surface area and surface charge, making them ideal for water purification. In this work, (ligno)cellulose nanofibers (LCNFs/CNFs) from wheat straw residues were obtained using two types of pre-treatments: mechanical (Mec) and TEMPO-mediated oxidization (TO), to obtain different consistency (0.2, 0.4, 0.6 and 0.8) bioaerogels, and their adsorption capacities as dye removers were further studied. The materials were characterized in terms of density, porosity and mechanical properties. An inversely proportional relationship was observed between the consistencies of the aerogels and their achieved densities. Despite the increase in density, all samples showed porosities above 99%. In terms of mechanical properties, the best results were obtained for the 0.8% consistency LCNF and CNF-Mec aerogels, reaching 67.87 kPa and 64.6 kPa for tensile strength and Young’s modulus, respectively. In contrast, the adsorption capacity of the aerogels was better for TEMPO-oxidized aerogels, reaching removal rates of almost 100% for the CNF-TO5 samples. Furthermore, the residual lignin content in LCNF-Mec aerogels showed a great improvement in the removal capacity, reaching rates higher than 80%, further improving the cost efficiency of the samples due to the reduction in chemical treatments.

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Section: Introductionmentioning

confidence: 99%

Cellulose Nanofiber-Based Aerogels from Wheat Straw: Influence of Surface Load and Lignin Content on Their Properties and Dye Removal Capacity

et al. 2022

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“…Huang et al obtained higher yields of xylotryose and xylotetraose after enzymatic hydrolysis of pretreated wheat straw at 180 °C for 20 min (X3 + X4: xylotriose: 3.1 ± 0.7 g/L). The literature shows that XOS produced via alkaline enzymatic treatment have low aqueous solubility, since the acetyl and uronic groups are completely degraded [ 2 , 21 ].…”

Section: Resultsmentioning

confidence: 99%

“…Oligosaccharides have attained a growing commercial interest in the last decades due to their application as food ingredients and putative prebiotic compounds, which might exert beneficial effects on the host health [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 ]. Some of these polymers, specifically xylo-oligosaccharides (XOS), are considered non-digestible fibers and can be produced from biodegradable and low-cost agricultural biomass, especially lignocellulosic material such as wheat straw, by chemical, auto-hydrolytic, enzymatic processes or a combination thereof [ 2 , 4 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 ].…”

Section: Introductionmentioning

confidence: 99%

“…Over the last years, various processes (enzymatic, chemical and autohydrolysis) have been exploited to produce XOS and fermentable sugars from lignocellulosic biomasses such as wheat by-products (straw, chaff and bran) [ 2 , 3 , 10 , 13 , 14 , 15 , 17 , 18 , 19 , 20 , 41 , 42 , 43 ], corn cobs [ 44 ], almond shells [ 20 ], olive stones [ 20 ], rice husks [ 44 ], barley straw [ 44 ], sugarcane straw [ 45 ] and poplar wood chips [ 46 ]. The state of the art in the manufacture and application of XOS up to 2019 was reviewed recently [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

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Chemical and Enzymatic Synthesis of Biobased Xylo-Oligosaccharides and Fermentable Sugars from Wheat Straw for Food Applications

et al. 2022

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Xylo-oligosaccharidesare sugar oligomers with 2~7 xylose units considered non-digestible fibers that can be produced from biodegradable and low-cost biomass like wheat straw. An integrated approach consisting of hydrothermal pretreatment, alkaline treatment, enzymatic treatment and the combinations thereof was applied to overcome the recalcitrance structure of the wheat straw and allow selective fractioning into fermentable sugars and xylo-oligosaccharides. The hydrolysates and processed solids were chemically characterized by High-performance liquid chromatography and Ion chromatography, and the results were expressed as function of the severity factor and statistically interpreted. The concentration of fermentable sugars (glucose, xylose, arabinose) was the highest after the combination of alkaline and enzymatic treatment with xylanase (18 g/L sugars), while xylo-oligosaccharides (xylotriose and xylotetraose) were released in lower amounts (1.33 g/L) after the same treatment. Refining experiments were carried out to obtain a purified fraction by using anion and cation exchange chromatography. The polymer adsorber resin MN-502 showed efficient removal of salts, phenols and furan derivatives. However, the xylo-oligosaccharides yields were also slightly reduced. Although still requiring further optimization of the treatments to obtain higher purified oligomer yields, the results provide information on the production of xylo-oligosaccharides and fermentable sugars from wheat straw for potential use in food applications.

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“…The main methods for the production of XOS include enzymatic hydrolysis, [6] dilute acid hydrolysis, [7] automatic hydrolysis [8] and a combination of these methods [9] . The enzymatic hydrolysis method is to extract xylan from lignocellulose, [10] and then xylan was further hydrolyzed to produce XOS by enzyme catalyzing [11] .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Xylo‐oligosaccharide from D‐xylose by Catalyst of Oxalate Acid

et al. 2022

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Xylo‐oligosaccharide (XOS) can stimulate the growth of Bifidobacterium, it is widely used in functional food, nutritional products and other aspects. At present, XOS is mainly prepared by hydrolysis of the hemicellulose in plant materials by enzyme catalyzing, resulting the high cost. In order to find an efficient method to reduce the cost, XOS was prepared by synthesis from D‐xylose through oxalate acid catalyzing in this paper, getting the results as following: a light‐yellow product of XOS was obtained with the max yield of 53.75±3.48 %. Its molecular weight is in the range of 459–1306 g/mol, being oligomers contain 3–9 units of D‐xylose units. In addition, the XOS contains both of the basic units of α‐D‐xylose and β‐D‐xylose, mainly connected by both α1‐β4 and β1‐α4 glycosidic bonds. Therefore, this study develops a new method of XOS generation, doing benefit to the high value‐added utilization of xylose.

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Production of xylo-oligosaccharides from wheat straw using microwave assisted deep eutectic solvent pretreatment

Cited by 39 publications

References 50 publications

Cellulose Nanofiber-Based Aerogels from Wheat Straw: Influence of Surface Load and Lignin Content on Their Properties and Dye Removal Capacity

Cellulose Nanofiber-Based Aerogels from Wheat Straw: Influence of Surface Load and Lignin Content on Their Properties and Dye Removal Capacity

Chemical and Enzymatic Synthesis of Biobased Xylo-Oligosaccharides and Fermentable Sugars from Wheat Straw for Food Applications

Synthesis of Xylo‐oligosaccharide from D‐xylose by Catalyst of Oxalate Acid

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