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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국미생물생명공학회 Journal of Microbiology and Biotechnology Journal of Microbiology and Biotechnology 제20권 제6호
- 발행연도
- 2010.1
- 수록면
- 1,032 - 1,041 (10page)
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The comparative influence of two nanoparticles [viz.,superparamagnetic iron oxide nanoparticles (SPION) and nanobarium titanate (NBT)] upon the in vitro and in situ low-density polyethylene (LDPE) biodegradation efficiency of a potential polymer-degrading microbial consortium was studied. Supplementation of 0.01% concentration (w/v) of the nanoparticles in minimal broth significantly increased the bacterial growth, along with early onset of the exponential phase. Under in vitro conditions, λ-max shifts were quicker with nanoparticles and Fourier transform infrared spectroscopy (FTIR) illustrated significant changes in CH/CH2 vibrations, along with introduction of hydroxyl residues in the polymer backbone. Moreover, simultaneous thermogravimetric-differential thermogravimetry-differential thermal analysis (TG-DTG-DTA) reported multiple-step decomposition of LDPE degraded in the presence of nanoparticles. These findings were supported by scanning electron micrographs (SEM), which revealed greater dissolution of the film surface in the presence of nanoparticles.
Furthermore, progressive degradation of the film was greatly enhanced when it was incubated under soil conditions for 3 months with the nanoparticles. The study highlights the significance of bacteria-nanoparticle interactions,which can dramatically influence key metabolic processes like biodegradation. The authors also propose the exploration of nanoparticles to influence various other microbial processes for commercial viabilities.
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참고문헌 (23)
참고문헌 신청
Albertsson, A. C / 1994 / Abiotic degradation products from enhanced environmentally degradable polyethylene / Acta Polym 45 : 97 ~ 103
Bikiaris, D / 1999 / Mechanical properties and biodegradability of LDPE blends with fatty-acid esters of amylase and starch / J. Appl. Polym. Sci 71 : 1089 ~ 1100
Flores, M / 2004 / A study of the growth curves of C. xerosis and E. coli bacteria in mediums containing cobalt ferrite nanoparticles / Mat. Res. Soc. Symp. Proc
Goel, R / 2008 / Implication of Arthrobacter and Enterobacter species for polycarbonate degradation / Int. Biodeter. Biodegrad 61 : 167 ~ 172
Hadad, D / 2005 / Biodegradation of polyethylene by the thermophilic bacterium Brevibacillus borstelensis / J. Appl. Microbiol 98 : 1093 ~ 1100
Bikiaris, D / 1999 / Mechanical properties and biodegradability of LDPE blends with fatty-acid esters of amylase and starch / J. Appl. Polym. Sci 71 : 1089 ~ 1100
Flores, M / 2004 / A study of the growth curves of C. xerosis and E. coli bacteria in mediums containing cobalt ferrite nanoparticles / Mat. Res. Soc. Symp. Proc
Goel, R / 2008 / Implication of Arthrobacter and Enterobacter species for polycarbonate degradation / Int. Biodeter. Biodegrad 61 : 167 ~ 172
Hadad, D / 2005 / Biodegradation of polyethylene by the thermophilic bacterium Brevibacillus borstelensis / J. Appl. Microbiol 98 : 1093 ~ 1100
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