Earticle

초록

영어

The study is comprised of multiple experiments for determining the adsorption capacity of silver using active/live and inactive/dead cells of Corynebacterium glutamicum. Langmuir and Freundlich isotherms were used to optimize the design of biosorption system. The increase in pH amplified the biosorption of silver, furthermore achieving equilibrium in less than 30 min. The maximum experimental uptake by active cells was 50.1 mg/g where as maximum uptake by inactive cells was 52.5 mg/g for the initial concentration of 1000 mg/L. As a part of our study, the bioreduction capacity of active and inactive cells of C. glutamicum to reduce Ag+ was determined. Transmission electron microscopy (TEM), Energy dispersive X-ray (EDX) and Xray diffraction (XRD) were performed for determining the formation of silver nanoparticles. The results revealed evident difference in the formation of nanoparticles by live and inactive cells. The surface of inactive cells showed large amount of reduction in contrast to the active cells. Nanoparticles acquired from these experiments showed irregularity in shape and size ranging between 5 and 50 nm in size. Our present study extends to explore the possibility of nanoparticles formation in the absence of enzymes and metabolites.

키워드

저자

• Sneha KRISHNAMURTHY [ Department of Bioprocess engineering, Chonbuk National University, ]
• Sok KIM [ Division of Semiconductor and Chemical Engineering, Chonbuk National University, ]
• Yeoung-Sang YUN [ Departemnt of Bioprocess Engineering, Chonbuk National University, ]
• Yeoung-Sang YUN [ Departemnt of Bioprocess Engineering, Chonbuk National University, ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국생물공학회 학술대회

• 간기

  반년간

• 수록기간

  1985~2013

• 십진분류

  KDC 476 DDC 576