Pseudomonas fluorescens에 의한 Furfural의 분해대사 조절물질에 관하여

Purification and Characterization of the Regulatory Substance of Furfural Biodegradation in Pseudomonas fluorescens

Pseudomonas fluorescens에 의해 세포외에 생산된 furfural의 furoic acid로의 생물학적 전환을 촉진시키는 ninhydrin 반응에 양성인 대사물 (Ninhydrin positive Substance=NPS)을 ion exchange chromatography와 gel permeation chromatography 그리고 cellulose columm chromatography에 의하여 분리, 정제하였다. IR spectrophotometry와 $^H$-NMR spectrometry 그리고 $^{13}C-NMR$ spectrometry에 의해 이 NPS는 -$^H$ and $-NH_2$와 그리고 $-CH_2-OH$group을 갖는 유기물질로 추정된다.

The objectives of this study were to isolate and identify ninhydrin positive substande(s) produced in the culture broth of Pseudomonas fluorescens. It was found that the NPS could stimulate bioconversion of furfural into furoic acid. In order to isolate the NPS from the culture broth, cell free filtrate was subjected to ion-exchange chromatography, gel-permeation and finally to cellulose column chromatography. The purified NPS was white amorphous power and very soluble in water, slightly soluble in methanol and very insoluble in organic solvents. UV, and IR absorption spectra. $^H$ and $^{13}C-NMR$ were measured in order to identify the chemical structure of the NPS.