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- 자료유형
- 학술저널
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- 한국미생물생명공학회 Journal of Microbiology and Biotechnology Journal of Microbiology and Biotechnology 제24권 제1호
- 발행연도
- 2014.1
- 수록면
- 87 - 96 (10page)
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In the present study, a yeast species isolated from CETP, Vellore, Tamilnadu was identified asCryptococcus sp. VITGBN2 based on molecular techniques and was found to be a potentproducer of acidic diacetate sophorolipid in mineral salt media containing vegetable oil asadditional carbon source. The chemical structure of the purified biosurfactant was identifiedas acidic diacetate sophorolipid through GC-MS analysis. This sophorolipid was used as astabilizer for synthesis of zinc oxide nanoparticles (ZON). The formation of biofunctionalizedZON was characterized using UV–visible spectroscopy, XRD, scanning electron microscopy(SEM), and Fourier transform infrared spectroscopy. The antimicrobial activities of nakedZON and sophorolipid functionalized ZON were tested based on the diameter of inhibitionzone in agar well diffusion assay, microbial growth rate determination, protein leakageanalysis, and lactate dehydrogenase assay. Bacterial pathogen Salmonella enterica and fungalpathogen Candida albicans showed more sensitivity to sophorolipid biofunctionalized ZONcompared with naked ZON. Among the two pathogens, S. enterica showed higher sensitivitytowards sophorolipid biofunctionalized ZON. SEM analysis showed that cell damageoccurred through cell elongation in the case of S. enterica, whereas cell rupture was found tooccur predominantly in the case of C. albicans. This is the first report on the dual role of yeastmediatedsophorolipid used as a biostabilizer for ZON synthesis as well as a novelfunctionalizing agent showing antimicrobial property.
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참고문헌 (24)
참고문헌 신청
Amro NA / 2000 / High-resolution atomic force microscopy studies of the Escherichia coli outer membrane : structural basis for permeability / Langmuir 16 : 2789 ~ 2796
Casas JA / 1999 / Sophorolipid production by Candida bombicola: medium composition and culture methods / J. Biosci. Bioeng 88 : 488 ~ 494
Chandran P / 2011 / Characterization of sophorolipid biosurfactant produced by yeast species grown on diesel oil / Int. J. Sci. Eng 2 : 63 ~ 71
Cullity BD. / 1967 / Elements of X-Ray Diffraction, 3rd Ed / Addison-Wesley
Daverey A / 2010 / Sophorolipids from Candida bombicola using mixed hydrophilic substrates: production, purification and characterization / Colloids Surf. B 79 : 246 ~ 253
Casas JA / 1999 / Sophorolipid production by Candida bombicola: medium composition and culture methods / J. Biosci. Bioeng 88 : 488 ~ 494
Chandran P / 2011 / Characterization of sophorolipid biosurfactant produced by yeast species grown on diesel oil / Int. J. Sci. Eng 2 : 63 ~ 71
Cullity BD. / 1967 / Elements of X-Ray Diffraction, 3rd Ed / Addison-Wesley
Daverey A / 2010 / Sophorolipids from Candida bombicola using mixed hydrophilic substrates: production, purification and characterization / Colloids Surf. B 79 : 246 ~ 253
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