응집성 효모인 Candida sp. HY200에 의한 xylitol 생산

On the basis of high-osmotic tolerance and xylitol productivity, it was isolated a novel strain from soil of rice field. An isolated strain was tentatively designated as Candida sp. HY200, deduced from the systematic approaches of bacterial identification by Biolog $Microlog^{TM}$ and, revealed an interesting ability of flocculation during the cultivation. With respect to the osmotic-tolerance and flocculation ability, experiment was carried out to investigate the production of xylitol in high xylose concentration. When xylose concentration was 260 g/L, it was obtained 205 g/L xylitol with 79% of yield and 2.14 g/L ${\cdot}$ h of productivity Consequently, We convinced that Candida sp. HY200 stands a very favorable comparison with C. tropicalis.

답토에서 분리한 균주는 Candida sp. HY200이라 임시 명명하였고, Candida tropocalis 보다 짧은 시간에 xylose를 소모하고, 당내성이 우수하며, flocculation의 특성을 갖고 있다. 260 g/L의 고농도 xylose 배지에서 xylitol 발효는 수율 79%, 생산성 2.14 g/L ${\cdot}$ h의 결과를 얻었다.