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  • assays
  • Whereas assays using p NP-acetate, α-naphthyl acetate, and 4-methylumbelliferyl acetate (4MUA) are emphasized, common methods used to measure AcXE activity towards carbohydrate analogs (e.g., acetylated p -nitrophenyl β- d -xylopyranosides) and various acetylated xylans are also described. (springer.com)
  • biofuels
  • Researchers with the U.S. Department of Energy (DOE)'s Joint BioEnergy Institute (JBEI) have taken a significant step towards removing this roadblock by identifying a gene in rice plants whose suppression improves both the extraction of xylan and the overall release of the sugars needed to make biofuels. (innovations-report.de)
  • Xylan is of particular interest for the improvement of feedstocks for the generation of cellulosic biofuels, a currently expensive and inefficient process," says Ronald. (innovations-report.de)
  • genes
  • To find genes important for grass xylan biosynthesis, Ronald, Scheller and their co-authors focused on the GT61 family of glycosyltransferases. (innovations-report.de)
  • furfural
  • This catalysis was applied as a solid acid catalyst for the heterogeneous catalytic transformations of xylose and xylan into furfural in the bio-based 2-methyltetrahydrofuran/H 2 O biphasic system. (mdpi.com)
  • Their catalytic performance for xylose and xylan into furfural was also investigated. (mdpi.com)
  • Alkaline Extraction
  • The aim of this work was to study some of the biological activities of xylan obtained from corn cobs after alkaline extraction enhanced by ultrasonication. (mdpi.com)
  • resistant
  • Rate data were correlated well by a parallel reaction model based on the existence of reactive and resistant xylan portions. (usda.gov)
  • found
  • It was found that only xylan was obviously acetylated in the initial stages of the reaction. (springer.com)
  • acid
  • No effect of acid concentration on the rate of acetyl removal relative to that of xylan was evident. (usda.gov)
  • Xylan obtained exhibited total antioxidant activity corresponding to 48.5 mg of ascorbic acid equivalent/g of xylan. (mdpi.com)
  • cell
  • A major roadblock, however, has been extracting xylan from plant cell walls. (innovations-report.de)
  • These domains are differently enriched in xylan fractions extracted by alkali and subcritical water, which indicates their preferential positioning in the secondary plant cell wall ultrastructure. (diva-portal.org)
  • No significant alterations in cell wall composition were observed in the transgenic lines, but their xylans were more easily digested by a beta-1,4-endoxylanase, and more readily extracted by hot water, acids or alkali. (diva-portal.org)
  • They use both C5 and C6 sugars simultaneously and have the ability to grow well on xylan, a major component of plant cell walls. (osti.gov)