02191nas a2200301 4500008004100000022001400041245009700055210006900152260009900221300001200320490000700332520109700339653000601436653002801442653003001470653002901500653002701529653002801556653002801584653003001612653001401642653002501656100001901681700002201700700002001722700002301742856012401765 2011 eng d a0144-861700aEnhanced enzymatic hydrolysis of cellulose by partial modification of its chemical structure0 aEnhanced enzymatic hydrolysis of cellulose by partial modificati aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLANDbELSEVIER SCI LTDcAUG a962-9680 v863 a
A series of 2,3-dialdehyde celluloses with different degrees of oxidation were used for deriving corresponding dicarboxylate, dicarboxy, and Schiff's base cellulose derivatives. The dialdehyde cellulose was hydrolyzed by cellulase to a lower extent than the starting cellulose, except at high levels of aldehyde content (above 50%). For dicarboxylate and dicarboxy celluloses, the highest level of oxidized NaDCC and DCC hydrolysed up to 70 and 60% respectively which was 3-4 times more than cellulose. The 2,3-dioxime cellulose derivative hydrolyzes only up to 16.3% for the highest level of oxidized dioxime. In the case of 2,3-diethylimine cellulose, all derivatives hydrolyse faster than the native cellulose. Up to 75% hydrolysis was observed for 2,3-diethyimine cellulose-50, 2,3-dipropylimine and 2,3-dibutylimine cellulose. The 2,3-dibenzylimine cellulose hydrolyses a little slower than the alkylimine derivatives. The 2,3-dihydrazone cellulose derivatives with all level of oxidation showed resistance towards enzymatic hydrolysis. (C) 2011 Elsevier Ltd. All rights reserved.
10a210a3-Dialdehyde celluloses10a3-Dibenzylimine cellulose10a3-Dibutylimine cellulose10a3-Dicarboxy celluloses10a3-Diethyimine cellulose10a3-Dihydrazone cellulose10a3-Dipropylimine cellulose10aCellulase10aEnzymatic hydrolysis1 aShaikh, H., M.1 aAdsul, Mukund, G.1 aGokhale, D., V.1 aVarma, Anjanikumar uhttp://library.ncl.res.in/content/enhanced-enzymatic-hydrolysis-cellulose-partial-modification-its-chemical-structure-0