Chemoenzymatic Synthesis of Amylose-Grafted Cellulose

• Published in: Macromolecular bioscience 2009-05, Vol.9 (5), p.450-455
• Main Authors: Omagari, Yuji, Matsuda, Shun-ichi, Kaneko, Yoshiro, Kadokawa, Jun-ichi
• Format: Article
• Language: English
• Subjects: amylose; Amylose - chemical synthesis; Amylose - chemistry; Applied sciences; Biocompatible Materials - chemical synthesis; Biocompatible Materials - chemistry; Carbohydrate Conformation; Carbohydrate Sequence; cellulose; Cellulose - chemical synthesis; Cellulose - chemistry; Cellulose and derivatives; enzymes; Exact sciences and technology; Glucans - chemical synthesis; Glucans - chemistry; graft copolymers; Molecular Sequence Data; Molecular Structure; Natural polymers; Physicochemistry of polymers; polysaccharides
• ISSN: 1616-5187; 1616-5195
• DOI: 10.1002/mabi.200800237

This paper reports the chemoenzymatic synthesis of an amylose‐grafted cellulose. A maltoheptaose was chemically introduced to the amine‐functionalized cellulose by reductive amination to produce the maltoheptaose‐grafted cellulose. Then, the phosphorylase‐catalyzed enzymatic polymerization of glucose 1‐phosphate from the graft‐chain ends on the cellulose derivative was performed, giving the amylose‐grafted cellulose. The obtained material is shown to form gels and films. The dry and wet cycles of the materials were repeated. This paper reports the chemoenzymatic synthesis of amylose‐grafted cellulose, which is a heteropolysaccharide composed of two representative natural polysaccharides, α‐ and β‐glucans. It is demonstrated that the material obtained can form gels and films.