Earticle

초록

영어

Cellulose-based materials have many potential applications in biomedical fields, because of their biocompatibility and biodegradability. Carbon nanotubes (CNTs) have been reported as ideal electrode materials due to their high electrical conductivity and large surface area. Recently, it was also reported that CNTs facilitate the direct electron transfer (DET) from redox enzymes to electrodes.1 DET between glucose oxidase (GOx) and electrodes is essential for GOx-based biosensors, biofuel cells, and bioelectronic devices, although GOx generally requires mediators for electrical communications.2 In this work, cellulose-CNT composites were prepared by vacuum filtration of CNTs and coagulation of cellulose dissolved in ionic liquid. Furthermore, GOx was immobilized on cellulose-CNT composite. Cyclic voltammograms of cellulose-CNT-GOx electrodes showed a pair of well-defined peaks. The formal redox potential peak was -460 mV, which agreed well with that of FAD/FADH2. This result clearly shows that the DET between the GOx and the cellulose-CNT electrode was achieved. It was also found that the GOx immobilized on the electrode retained catalytic activity for the oxidation of glucose.

키워드

저자

• Seulji AN [ Dept. of Microbial Engineering, Konkuk Univ., Seoul, 143-701. ]
• Hyeong Min SEO [ Dept. of Microbial Engineering, Konkuk Univ., Seoul, 143-701. ]
• Seong Min LEE [ Dept. of Microbial Engineering, Konkuk Univ., Seoul, 143-701. ]
• Hyung Joo KIM [ Dept. of Microbial Engineering, Konkuk Univ., Seoul, 143-701. ]
• Keehoon WON [ Dept. of Chemical and Biochemical Engineering, Dongguk Univ-Seoul, Seoul, 100-715. ]
• Sang Hyun LEE [ Dept. of Microbial Engineering, Konkuk Univ., Seoul, 143-701. ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국생물공학회 학술대회

• 간기

  반년간

• 수록기간

  1985~2013

• 십진분류

  KDC 476 DDC 576