Results 181 to 190 of about 4,505 (224)
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Holzforschung, 2011
AbstractAutohydrolysis of wood as a pretreatment stage before alkaline pulping is seen as an opportunity to approach the ideals of a forest biorefinery. In autohydrolysis the degradation products of primarily hemicelluloses and some other wood components are mainly dissolved (liquid phase) and they also escape partly as gas. In the present paper, birch
Lidia Testova +3 more
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AbstractAutohydrolysis of wood as a pretreatment stage before alkaline pulping is seen as an opportunity to approach the ideals of a forest biorefinery. In autohydrolysis the degradation products of primarily hemicelluloses and some other wood components are mainly dissolved (liquid phase) and they also escape partly as gas. In the present paper, birch
Lidia Testova +3 more
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Kinetic modelling of corncob autohydrolysis
Process Biochemistry, 2001Abstract Corncobs were reacted with water and treated at temperatures in the range 145–190°C during 0–12.3 h at a liquor to solid ratio of 8 or 10 kg/kg (autohydrolysis treatments), to hydrolyse the hemicellulose fraction to xylooligomers (useful as food ingredients) and xylose (a carbon source for further fermentation stages).
Gil Garrote +2 more
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ChemInform Abstract: Autohydrolysis of Polysaccharides
ChemInform, 1994AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
M. CIANCIA, A. S. CEREZO
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Production of oligosaccharides by autohydrolysis of brewery's spent grain
Bioresource Technology, 2004Brewery's spent grain was treated with water in a process oriented towards the production of xylo-oligosaccharides (XOS). A wide range of temperatures and reaction times were tested and the effects of these operational variables on hemicellulose solubilization and reaction products were investigated.
F, Carvalheiro +4 more
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Autohydrolysis of agricultural residues: Study of reaction byproducts
Bioresource Technology, 2007Samples of rice husks and corn cobs were subjected to hydrothermal treatments in aqueous media under conditions leading to maximal xylooligomer concentration, and the reaction liquors were extracted with dichloromethane (DCM) to assess the type and amount of reaction byproducts with potential application as food ingredients and cosmetics.
Gil, Garrote +3 more
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Dilute Acid and Autohydrolysis Pretreatment
2009Exposure of cellulosic biomass to temperatures of about 120-210 degrees C can remove most of the hemicellulose and produce cellulose-rich solids from which high glucose yields are possible with cellulase enzymes. Furthermore, the use of dilute sulfuric acid in this pretreatment operation can increase recovery of hemicellulose sugars substantially to ...
Bin, Yang, Charles E, Wyman
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Fractionation of Antioxidants from Autohydrolysis of Barley Husks
Journal of Agricultural and Food Chemistry, 2008The liquid phase from nonisothermal autohydrolysis of barley husks was extracted with ethyl acetate and redissolved in ethanol to yield a crude extract (denoted BHEAE), which was subjected to further processing to enhance the antioxidant activity. A fractionation method, carried out for characterization purposes, consisted of the extraction of BHEAE ...
Enma, Conde +3 more
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Production of xylooligosaccharides by autohydrolysis of lignocellulosic materials
Trends in Food Science & Technology, 2004The composition of xylan-containing raw materials (Eucalyptus globulus wood, corn cobs, rice husks and barley husks) has been determined, and substituted xylooligosaccharides (SXO) have been produced by reacting them with water (autohydrolysis reaction) under optimal conditions deduced from reported kinetic models.
J.C Parajó +3 more
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Kinetic Modeling of Breweryapos;s Spent Grain Autohydrolysis
Biotechnology Progress, 2008Isothermal autohydrolysis treatments of brewery's spent grain were used as a method for hemicellulose solubilization and xylo-oligosaccharides production. The time course of the concentrations of residual hemicelluloses (made up of xylan and arabinan) and reaction products were determined in experiments carried out at temperatures in the range from 150
Florbela, Carvalheiro +4 more
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Autohydrolysis of Tropical Harowodos
Journal of Wood Chemistry and Technology, 1987Abstract Eight tropical hardwoods (Malaysian) were subjected to autohydrolysis at 195°C for 10 – 100 Min, followed by extraction with 90% dioxane. A linear relationship was obtained between the % of water soluble extract, after autohydrolysis, and the % of hemicellulose present in the respective woods.
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