Fractionation and Saccharification of Cellulose and Hemicellulose in Rice Hull by Hot-Compressed-Water Treatment with Two-Step Heating

Kumagai, Shinya; Hayashi, Naoaki; Sasaki, Tsuyoshi; Nakada, Masao; Shibata, Masao

doi:10.3775/jie.83.776

Cited by 35 publications

(17 citation statements)

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“…The spent solids from autohydrolysis are suitable for further utilization, for example enzymatic hydrolysis of cellulose [15][16][17][18][19][20][21][22], utilization for feed or fuel, or as a construction material [23]. In this field, it can be noted that multiproduct processes from lignocellulosic materials (according to the ''biorefiney approach'') present better economic perspectives, and decrease greenhouse gas emissions in agreement with the objectives of the Kyoto Protocol [24].…”

Section: Autohydrolysis Of Lignocellulosic Materials For Producing Xymentioning

confidence: 91%

“…Recent studies have been reported on the manufacture of XO by chemical processing of a variety of feedstocks, including crop residues [27], sugarcane bagasse [28], hardwoods [29][30][31][32], corncobs [30,33,34], barley hulls [30,35,36], brewery spent grains [37,38], almond shells [25], corn stover and corn fiber [16,22,39], rice hulls [19,30,[40][41][42], flax shive [43], wheat straw [44] and bamboo [45]. Table 1 summarizes information on this topic.…”

Section: Autohydrolysis Of Lignocellulosic Materials For Producing Xymentioning

confidence: 99%

“…Manufacture of water-soluble compounds from hemicelluloses [19] Rice hulls Two-step aqueous treatment (120 and 198 8C, respectively) for hydrolysis of hemicellulose and susceptible lignin Production of high-DP xylan oligosaccharides and water-soluble lignins [42] Flax shive Aqueous treatments in microwave oven for partial depolymerization and solubilization of hemicelluloses Structural characterization of hemicellulose-derived products [43] Wheat straw Steam explosion at temperatures in the range 200-220 8C…”

Section: Biomass Xylan and Xylan Hydrolysis Productsmentioning

confidence: 99%

See 2 more Smart Citations

Advances in the manufacture, purification and applications of xylo-oligosaccharides as food additives and nutraceuticals

Moure

Gullón

Domı́nguez

et al. 2006

Process Biochemistry

467

242

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Section: Autohydrolysis Of Lignocellulosic Materials For Producing Xymentioning

confidence: 91%

Section: Autohydrolysis Of Lignocellulosic Materials For Producing Xymentioning

confidence: 99%

Section: Biomass Xylan and Xylan Hydrolysis Productsmentioning

confidence: 99%

See 1 more Smart Citation

Advances in the manufacture, purification and applications of xylo-oligosaccharides as food additives and nutraceuticals

Moure

Gullón

Domı́nguez

et al. 2006

Process Biochemistry

467

242

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“…The hemicellulose in rice hulls contains both arabinoxylan and xyloglucan (4,5). To our knowledge, gassification of rice hulls has been considered as a potential waste disposal and energy recovery method, and very little literature is available on the pretreatment, enzymatic saccharification, and fermentation of rice hulls (6)(7)(8)(9). The objective of this work is to develop methods for efficient pretreatment and enzymatic saccharification of rice hull cellulose and hemicellulose into fermentable sugars and fermentation of the hydrolyzate to ethanol.…”

Section: Introductionmentioning

confidence: 99%

Dilute Acid Pretreatment, Enzymatic Saccharification, and Fermentation of Rice Hulls to Ethanol

Saha

Iten

Cotta

et al. 2008

Biotechnol Progress

278

127

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Rice hulls, a complex lignocellulosic material with high lignin (15.38 +/- 0.2%) and ash (18.71 +/- 0.01%) content, contain 35.62 +/- 0.12% cellulose and 11.96 +/- 0.73% hemicellulose and has the potential to serve as a low-cost feedstock for production of ethanol. Dilute H2SO4 pretreatments at varied temperature (120-190 degrees C) and enzymatic saccharification (45 degrees C, pH 5.0) were evaluated for conversion of rice hull cellulose and hemicellulose to monomeric sugars. The maximum yield of monomeric sugars from rice hulls (15%, w/v) by dilute H2SO4 (1.0%, v/v) pretreatment and enzymatic saccharification (45 degrees C, pH 5.0, 72 h) using cellulase, beta-glucosidase, xylanase, esterase, and Tween 20 was 287 +/- 3 mg/g (60% yield based on total carbohydrate content). Under this condition, no furfural and hydroxymethyl furfural were produced. The yield of ethanol per L by the mixed sugar utilizing recombinant Escherichia colistrain FBR 5 from rice hull hydrolyzate containing 43.6 +/- 3.0 g fermentable sugars (glucose, 18.2 +/- 1.4 g; xylose, 21.4 +/- 1.1 g; arabinose, 2.4 +/- 0.3 g; galactose, 1.6 +/- 0.2 g) was 18.7 +/- 0.6 g (0.43 +/- 0.02 g/g sugars obtained; 0.13 +/- 0.01 g/g rice hulls) at pH 6.5 and 35 degrees C. Detoxification of the acid- and enzyme-treated rice hull hydrolyzate by overliming (pH 10.5, 90 degrees C, 30 min) reduced the time required for maximum ethanol production (17 +/- 0.2 g from 42.0 +/- 0.7 g sugars per L) by the E. coli strain from 64 to 39 h in the case of separate hydrolysis and fermentation and increased the maximum ethanol yield (per L) from 7.1 +/- 2.3 g in 140 h to 9.1 +/- 0.7 g in 112 h in the case of simultaneous saccharification and fermentation.

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“…In past studies, researchers have reported on the solubilization trends of chemical cellulose [11] and biomass cellulose [12] in hydrothermal condition. Both types of cellulose showed difficulty in decomposition below 230˚C.…”

Section: Resultsmentioning

confidence: 99%

Monosaccharide Recovery from Peat and Peatified Wood by Ultrasonication Pretreatment and Hydrothermal Treatment

Nonaka

Hirajima

Kumagai

2017

IJCCE

Self Cite

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Peat and peatified wood are significant carbohydrate resources in tropical rainforests. The carbohydrates of cellulose and hemicellulose are important sources of monosaccharides for both vital activities and industrial applications, such as furan production of furfural and hydroxymethyl furfural. Hydrothermal treatment at 200˚C and ultrasonic irradiation pretreatment were used to recover monosaccharides from the abovementioned resources. The monosaccharide recovery from peat was shown to be higher than that from peatified wood. The conversion to organic acids is considered to proceed rapidly because acids are always detected with monosaccharides. This conversion is outstripped by the organic acid-to-gas reaction for treatment times longer than 20 min. The monosaccharide recovery from peatified wood was improved by the ultrasonication pretreatment. It is considered that ultrasonic irradiation broke down lignin blockages, enabling water molecules to access the carbohydrates more easily in the subsequent hydrothermal treatment.

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Fractionation and Saccharification of Cellulose and Hemicellulose in Rice Hull by Hot-Compressed-Water Treatment with Two-Step Heating

Cited by 35 publications

References 0 publications

Advances in the manufacture, purification and applications of xylo-oligosaccharides as food additives and nutraceuticals

Advances in the manufacture, purification and applications of xylo-oligosaccharides as food additives and nutraceuticals

Dilute Acid Pretreatment, Enzymatic Saccharification, and Fermentation of Rice Hulls to Ethanol

Monosaccharide Recovery from Peat and Peatified Wood by Ultrasonication Pretreatment and Hydrothermal Treatment

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