Novel process for the coproduction of xylo-oligosaccharides, fermentable sugars, and lignosulfonates from hardwood

Huang, Caoxing; Jeuck, Ben; Du, Jing; Yong, Qiang; Chang, Hou‐min; Jameel, Hasan; Phillips, Robert

doi:10.1016/j.biortech.2016.08.051

Cited by 79 publications

(35 citation statements)

References 30 publications

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“…21 Huang et al employed an extensive wash to minimize the removal of XOS, but $10% of XOS were still lost. 29 Narron et al hypothesized that LCC may be to blame for XOS removal, however, our results indicated that even XOS that was denitely not associated with lignin was removed by hydrophobic resin treatment. Previous reports have not discussed the impact of DP on XOS removal during this process.…”

Section: Effect Of Xos Degree Of Polymerization (Dp) and Water Washcontrasting

confidence: 61%

“…Hydrophobic resin has been proposed as an option for selective removal of lignin from pretreatment liquor streams. 21,29 XAD resins are shipped coated with preservative salts. To remove these salts, an extensive washing procedure was conducted: (1) DI water wash until pH of wash water is neutral ($2000 mL), (2) extensive methanol wash to remove an adsorbed impurity ($500 ml), and (3) water wash to remove methanol ($500 ml).…”

Section: Hydrophobic Resinsmentioning

confidence: 99%

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Hydrophobic resin treatment of hydrothermal autohydrolysate for prebiotic applications

et al. 2019

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Section: Effect Of Xos Degree Of Polymerization (Dp) and Water Washcontrasting

confidence: 61%

Section: Hydrophobic Resinsmentioning

confidence: 99%

Hydrophobic resin treatment of hydrothermal autohydrolysate for prebiotic applications

et al. 2019

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“…The process of XOS synthesis involves the physical (autohydrolysis), chemical (hydronium ions generated by water autoionization and in situ organic acids) or enzymatic hydrolysis (xylanase or β-xylosidase) of hemicellulose-rich agricultural wastes (Aachary and Prapulla 2011). Several reports suggested that XOS can be enzymatically produced from different agro-residues such as hardwoods (Huang et al 2016), straws (Gullón et al 2008;Kallel et al 2015a;Moniz et al 2016) corn cobs (Chapla et al 2013;Gowdhaman and Ponnusami 2015), bran (Otieno and Ahring 2012), sugarcane bagasse (Jayapal et al 2013)…”

Section: Xylanase Employed In Chemical and Pharmaceutical Industriesmentioning

confidence: 99%

A detailed overview of xylanases: an emerging biomolecule for current and future prospective

Bhardwaj

Kumar

Verma

2019

Bioresour. Bioprocess.

277

105

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Xylan is the second most abundant naturally occurring renewable polysaccharide available on earth. It is a complex heteropolysaccharide consisting of different monosaccharides such as l-arabinose, d-galactose, d-mannoses and organic acids such as acetic acid, ferulic acid, glucuronic acid interwoven together with help of glycosidic and ester bonds. The breakdown of xylan is restricted due to its heterogeneous nature and it can be overcome by xylanases which are capable of cleaving the heterogeneous β-1,4-glycoside linkage. Xylanases are abundantly present in nature (e.g., molluscs, insects and microorganisms) and several microorganisms such as bacteria, fungi, yeast, and algae are used extensively for its production. Microbial xylanases show varying substrate specificities and biochemical properties which makes it suitable for various applications in industrial and biotechnological sectors. The suitability of xylanases for its application in food and feed, paper and pulp, textile, pharmaceuticals, and lignocellulosic biorefinery has led to an increase in demand of xylanases globally. The present review gives an insight of using microbial xylanases as an "Emerging Green Tool" along with its current status and future prospective.

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“…After enzymatic hydrolysis, the xylan content was further reduced from 23.3% to 6.7%, indicating that the wheat straw xylan removed was about 71.4%. The xylan hemicellulose removal during acidolysis pretreatment lead to an efficient exposure of the cellulose polymer to cellulase components, which certainly benefited the enzymatic hydrolysis …”

Section: Resultsmentioning

confidence: 99%

Optimization of selective acidolysis pretreatment for the valorization of wheat straw by a combined chemical and enzymatic process

Guo

Huang

Zhang

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND: Advances in industrial biotechnology offer potential opportunities for economic utilization of abundantly available agricultural crop waste such as wheat straw, which is of great interest for advancement in xylo-oligosaccharides (XOS) and fermentable monosaccharides. In the present study, crude XOS and fermentable monosaccharides were sequentially produced by a combined chemical and enzymatic process from wheat straw.RESULTS: Maximum yield of XOS was 38.2% and the corresponding yield of glucose was 82.7% despite the wax barrier on the surface of wheat straw, while the acetic acid concentration was decreased from 20% to 5%. Pilot scale run produces 91.6 g XOS, 92.5 g xylose and 316.0 g glucose from 1000 g of wheat straw that means the utilization of 78.9% of xylan and 89.7% glucan constitutes.CONCLUSION: By removal of 65% xylan from wheat straw, enzymatic hydrolysis of cellulose was also improved efficiently although its polymer structure was almost kept inert during acetic acid pretreatment. ABBREVIATIONSAA acetic acid DC degraded chemicals HMF hydroxymethyl furfural SSTs stainless steel tubes XOS xylo-oligosaccharides Analytical method The sugars and degraded chemicals were detected by high-performance liquid chromatography (HPLC, Agilent 1260, J Chem Technol Biotechnol 2020; 95: 694-701Figure 3. (a) Enzymatic hydrolysis at various cellulase loading; (b) main sugar contents variations in 15 FPIU/g enzymatic hydrolysis; (c) changes of polysaccharide components in wheat straw before and after enzymatic hydrolysis and pretreatment. J Chem Technol Biotechnol 2020; 95: 694-701

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Novel process for the coproduction of xylo-oligosaccharides, fermentable sugars, and lignosulfonates from hardwood

Cited by 79 publications

References 30 publications

Hydrophobic resin treatment of hydrothermal autohydrolysate for prebiotic applications

Hydrophobic resin treatment of hydrothermal autohydrolysate for prebiotic applications

A detailed overview of xylanases: an emerging biomolecule for current and future prospective

Optimization of selective acidolysis pretreatment for the valorization of wheat straw by a combined chemical and enzymatic process

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