Microbiology and Biotechnology Letters (한국미생물·생명공학회지)

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Production of Inulin fructotransferase(depolumerizing)by Arthrobacter sp. A-6

Arthrobacter sp. A-6에 의한 Inulin Fructotransferase (depolymerizing)의 생산

  • 박정복 (고려대학교 자연자원대학 유전공학과) ;
  • 권영만 (고려대학교 자연자원대학 유전공학과) ;
  • 최용진 (고려대학교 자연자원대학 유전공학과)
  • Published : 1995.02.01
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Abstract

A bacterial strain A-6 producing the high level of an extracellular inulin fructotransfe rase(depolymerizing)(EC 2.4.1.93) which converts inulin into di-D-fructofuranose dianhydride III (DFAIII) was isolated from soil. The isolated strain could be classified as a species belonging to the genus Arthrobacter based on its morphological and physiological characteristics identified in this work. Production of the enzyme was induced by inulin, and the highest activity was detected in the slightly acidic medium supplemented with 2.5% inulin and 0.1% trypton as a sole carbon and a nitrogen source, respectively. Under the optimal conditions, the enzyme activity in the culture supernatant reached approximately 60 uints/ml after 96 hours of cultivation. The optimum pH and temperature for the crude enzyme preparation from Arthrobacter sp. A-6 were pH 5.0 and 60$\circ$C , respectively. The DFA produced by the action of the inulin fructotransferase was confirmed to be DFAIII by paper chromatography, HPLC and $^{13}$C-NMR spectroscopy.

Keywords

References

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