Microwave-assisted acid hydrolysis to produce xylooligosaccharides from sugarcane bagasse hemicelluloses

Bian, Jing; Peng, Pai; Peng, Feng; Xiao, Xiao; Xu, Feng; Sun, Run‐Cang

doi:10.1016/j.foodchem.2014.01.112

Cited by 99 publications

(70 citation statements)

References 29 publications

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“…A low intensity signal for C‐6 carbonyl group, pertaining to O‐Me‐a‐D‐glucuronic acid arabinose residue was noticed at 178.6 ppm which indicated the presence of XOS with lesser branching or side groups. Similar observations have been made with the 13 C NMR spectra for ragi arabinoxylans (Subba Rao & Muralikrishna, ) and enzymatically derived XOS from sugarcane bagasse (Bian et al, ). On the basis of NMR results, the major XOS derived from wheat bran hydrolysis composed of xylobiose and xylotriose.…”

Section: Resultssupporting

confidence: 82%

Production of a thermostable and alkali resistant endoxylanase byBacillus subtilisDFR40 and its application for preparation of prebiotic xylooligosaccharides

2018

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Xylanases produced by microorganisms hydrolyze xylan, into xylose or xylooligosaccharides (XOS). Xylan is an abundant noncellulosic polysaccharide found in the plant biomass. The enzyme is of great practical importance for the conversion of xylan containing agricultural residues into XOS for use as prebiotics. A Bacillus subtilis strain DFR40 a generally recognized as safe (GRAS) organism was found to produce extracellular xylanase in a growth medium containing wheat bran, mineral salts, peptone, and yeast extract at pH 7.0. The optimum activity of the enzyme was around 100°C and pH 9.0 with stability over a broad range of pH (7.0–12.0) displaying enzyme stability of more than 70% even after pre‐incubation at 55–85°C for 30 min. The enzyme hydrolyzed wheat bran into short chain XOS as revealed by TLC, HPLC, FT‐IR, and NMR analysis. Practical applications The thermostable and alkali resistant characteristics of extracted xylanase along with ability to hydrolyze wheat bran for the production of xylooligosaccharides (XOS), for use as prebiotic ingredients in food, are relevant in the present health conscious worldwide scenario. XOS are emerging class of prebiotics with thermal resistance up to 100°C, and are suitable for incorporating into thermally processed food products with extended shelf life. The XOS preparation was also found suitable suggesting the prebiotic nature of XOS on known probiotic bacterial strains. The study also indicates a valuable application for wheat bran, a cheap agro residue for further cost effective scale up of XOS production. The xylanase produced is of significance as the producing bacterium is a GRAS organism for further scale‐up of the processes of enzyme and XOS production.

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Section: Resultssupporting

confidence: 82%

Production of a thermostable and alkali resistant endoxylanase byBacillus subtilisDFR40 and its application for preparation of prebiotic xylooligosaccharides

2018

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“…Microwave heating at lab scale has been 23 arising as a good means to predict the effects of heat treatment on a larger scale [31] and 24 furthermore microwaves have been reported as a valuable tool to reduce processing time and A c c e p t e d M a n u s c r i p t 6 energy in biomass treatments. A microwave-assisted extraction of xylooligosaccharides from 1 sugarcane bagasse in acidic media at less than 100 °C was reported [32], however applying 2 pressure enables generally much shorter treatment times and higher yields. Such operating 3 conditions were reported for instance on (i) maize bran, to initiate autohydrolysis and to 4 solubilize feruloylated AXOS [33], (ii) wheat bran, to release free arabinose [6] or (iii) wheat 5 straw, to solubilize its xylans [34].…”

mentioning

confidence: 99%

Non-alkaline solubilization of arabinoxylans from destarched wheat bran using hydrothermal microwave processing and comparison with the hydrolysis by an endoxylanase

Aguedo¹,

Ruiz²,

Richel³

2015

Chemical Engineering and Processing: Process Intensification

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“…The shoulder at ~1160 cm −1 belongs to the arabinosyl side chains. The characteristic peak of all the C-O, C-C stretching, and the glycosidic (C-O-C) located at ~1034 cm −1 [22]. In the literature, it obtained the characteristic peak of the C-O stretching mode of cellulose at ~1034 cm −1 [23].…”

Section: Resultsmentioning

confidence: 99%

Synthesis, Characterization, and Photocatalytic Properties of Bamboo Charcoal/TiO2 Composites Using Four Sizes Powder

Wang

Liu

et al. 2018

Materials

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Visible-light-active bamboo biochar/TiO2 composites were fabricated by the calcination method using C16H36O4Ti as the titanium source and bamboo powder with different sizes as the carbon source. The TiO2 nanoparticles were observed to disperse onto the surface of bamboo biochar fiber. The sizes of the bamboo powder played an important role in the microstructures and the properties of bamboo biochar/TiO2 composites. The bamboo biochar/TiO2 composites displayed the photocatalytic activities both under visible light irradiation and UV irradiation. The adsorption isotherms better fitted Freundlich isotherm models and the photodegradation reactions followed pseudo-first-order kinetics. Bamboo charcoal/TiO2 composites exhibited high stability after up to four cycles. This research could pave the way for high-value applications of biomass in the environmental field.

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Microwave-assisted acid hydrolysis to produce xylooligosaccharides from sugarcane bagasse hemicelluloses

Cited by 99 publications

References 29 publications

Production of a thermostable and alkali resistant endoxylanase byBacillus subtilisDFR40 and its application for preparation of prebiotic xylooligosaccharides

Production of a thermostable and alkali resistant endoxylanase byBacillus subtilisDFR40 and its application for preparation of prebiotic xylooligosaccharides

Non-alkaline solubilization of arabinoxylans from destarched wheat bran using hydrothermal microwave processing and comparison with the hydrolysis by an endoxylanase

Synthesis, Characterization, and Photocatalytic Properties of Bamboo Charcoal/TiO2 Composites Using Four Sizes Powder

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