PEG 분해균주의 분리, 동정 및 PEG Film 상용성에 관한 연구 = Studies on the Isolation and Identification of PEG-Degradable Strains and Physical Chracteristics of PEG-Films

국문 초록 (Abstract)

PEG를 탄소원과 에너지원으로서 이용하는 미생물을 자연계에서 분리하였고, PEG의 분자량이 높아질수록 분해 미생물의 성장이 감소하였다. 또한, 액체배양 실험에서도 PEG 농도가 감소하였다. 동정 실험결과 Flavobacterium sp.인 것으로 조사되었다. 분해율은 PEG 18500이 약 18.8%였으며 PEG 10000은 약 25.4%인 것으로 조사되었다. PEG film의 제조를 위해 EMAA 및 EAA와의 상용성을 적외선 분광(IR) 스펙트럼을 사용하여 조사한 결과, EMAA와 EAA의 카르보닐기와 PEG의 에테르기와의 강한 수소결합의 형성으로 블랜드 필름의 제조시 상용성이 있는 것으로 확인되었다.

다국어 초록 (Multilingual Abstract)

Several strains capable of degrading PEGs(Polyethylene Glycols) were isolated and investigated for their biodegradation ability of PEGs. Microorganisms screened for the biodegradation studies were those grown on the PEG used as a sole carbon and energy source. It was known that the number of microorganisms decreased when grown on the high molecular weight of PEG. A biodegradation of PEG was investigated with such microorganisms in the reactor and resulted in the decrease in PEG concentration meaning that PEG was degraded in the reactor. This microorganism was identified as Flavobacterium sp. The biodegradability was found to be about 18.8% for PEG-8000 and 25.4% for PEG-10,000, respectively. For the manufacture of biodegradable PEG film, EMAA/PEG and EAA/PEG blending ability was investigated with IR spectrum and showed that it was possible to produce blending film.