Hydrolytic activities of artificial nanocellulose synthesized via phosphorylase-catalyzed enzymatic reactions
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چکیده
منابع مشابه
Precision Synthesis of Functional Polysaccharide Materials by Phosphorylase-Catalyzed Enzymatic Reactions
In this review article, the precise synthesis of functional polysaccharide materials using phosphorylase-catalyzed enzymatic reactions is presented. This particular enzymatic approach has been identified as a powerful tool in preparing well-defined polysaccharide materials. Phosphorylase is an enzyme that has been employed in the synthesis of pure amylose with a precisely controlled structure. ...
متن کاملPreparation of Nanocellulose via Transition Metal Salt- Catalyzed Hydrolysis Pathway
Nanocellulose was successfully prepared from microcrystalline cellulose (MCC) via nickel salt-catalyzed hydrolysis under mild reaction conditions of 45 °C for 15 min. The mild acid nickel salt-catalyzed hydrolysis was able to selectively depolymerize the amorphous regions of cellulose and retain its crystalline region, thus improving the crystallinity of the treated product at the nanoscale up ...
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summarize our knowledge of the mechanism, specificity, and properties of enzyme preparations from several sources, and the purification procedures that have been reported. Previous studies by Singer, Heppel, and Hilmoe (3, 4) led to the suggestion that polynucleotide phosphorylase may be unable to catalyze the initiation of new polyribonucleotide chains, but rather that it acts by the elongatio...
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The reaction of the tetranucleotide, pA-A(2)-A, with 2'(3')-0-(alpha-methoxyethyl)uridine 5'-diphosphate, Mg(2+) ions, and M. luteus polynucleotide phosphorylase followed by mild acid treatment to remove the blocking groups results in a 49% yield of the desired single addition product, pA-A(3)-U, together with smaller amounts of pA-A-U, pA-A-A, pA-A(2)-U, pA-A(2)-A, pA-A(3)-A, pA-A(4)-U, and pA...
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The hydrolytic reactions of esters and amides of thiosulphurous acid ate investigated in a homogeneous medium. The esters are hydrolysed by alkali to gire sulphide, sulphite and thiosulphate whereas the amides are resistant towards alkali. Both the esters and amides are hydrolysed by acids giving hydrogen sulphide, sulphur dioxide, polythionates and elemental sulphur. The hydrolysis of these es...
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ژورنال
عنوان ژورنال: Polymer Journal
سال: 2016
ISSN: 0032-3896,1349-0540
DOI: 10.1038/pj.2015.125