Xylooligosaccharides Production from Lignocellulosic Biomass
Summary
Xylooligosaccharides (XOS) are short-chain polymers derived from the hemicellulose component of lignocellulosic biomass and are valued for their prebiotic benefits and potential applications in functional foods, feed additives and pharmaceuticals. Production begins with biomass pretreatment to disrupt the rigid matrix of cellulose, hemicellulose and lignin. Common pretreatment strategies include dilute acid hydrolysis, alkaline extraction, steam explosion and hydrothermal processing, each balancing efficiency, energy use and minimisation of degradation by-products. Following pretreatment, xylan polymers are solubilised and subjected to enzymatic hydrolysis—primarily using endo-1,4-β-xylanases—to yield XOS with defined degrees of polymerisation (DP). Process integration often couples chemical or physical pretreatment with selective enzyme cocktails, followed by purification steps such as membrane filtration, adsorption on resins or chromatographic separation. Advances focus on maximising XOS yield while preserving higher-DP fractions, enhancing selectivity through tailored enzymes or stepwise hydrolysis, and valorising co-products such as lignin and fermentable sugars within a biorefinery framework. Global significance arises from converting agricultural residues and energy crops into health-promoting ingredients while aligning with circular-economy principles and reducing reliance on fossil resources.
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Xylooligosaccharides Production from Lignocellulosic Biomass publication trend
The graph below shows the total number of articles in xylooligosaccharides production from lignocellulosic biomass across all publications each year (not limited to Nature Index journals).
Technical terms
Lignocellulosic biomass: Plant-derived material composed of cellulose, hemicellulose and lignin.
Xylooligosaccharides (XOS): Oligomers of xylose units linked by β-1,4 bonds, typically DP 2–10, with prebiotic activity.
Pretreatment: Physicochemical processes (acid, alkaline, steam explosion, hydrothermal) to disrupt biomass structure and solubilise hemicellulose.
Endo-xylanase: Enzyme that randomly cleaves internal β-1,4 linkages in xylan chains, releasing XOS.
Degree of polymerisation (DP): Number of monomeric sugar units in an oligosaccharide or polysaccharide chain.
References
- The preparation technology and application of xylo-oligosaccharide as prebiotics in different fields: A review. Frontiers in Nutrition (2022).
- Extraction of sugarcane bagasse arabinoxylan, integrated with enzymatic production of xylo-oligosaccharides and separation of cellulose. Biotechnology for Biofuels and Bioproducts (2021).
- Evaluating the In Vitro and In Vivo Prebiotic Effects of Different Xylo-Oligosaccharides Obtained from Bamboo Shoots by Hydrothermal Pretreatment Combined with Endo-Xylanase Hydrolysis. International Journal of Molecular Sciences (2023).
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