여수주변해역에서 분리한 유류분해세균 Pseudomonas sp. BCK-1의 특성

Characterization of Oil Degrading Bacterium Pseudomonas sp. BCK-1 Isolated from the Coastal Water of Yosu, Korea

한국 남해안 유류 오염지역인 전남 여수시 소리도 지역 해수로부터 유류 분해능이 우수한 균주를 선별하여 동정한 결과 Pseudomonas sp.로 동정되었으며, Pseudomonas sp. BCK-1으로 명명하였다. 균성장에 대한 최적배양온도, pH, NaCl 농도는 각각 $30^{\circ}C$, 7.0, $3\%$(w/v)였으며, $2\%$ (w/v) arabian light crude oil과 bunker C oil을 기질로 72시간 및 168시간 배양한 결과 arabian light crude oil는 $92\%$ (w/w), bunker, C oil은 $72\%$ (w/w)가 각각 생분해되었다.

A marine bacterium having a high oil-degrading activity was isolated from the coastal water of Yosu, Korea, identified as Pseudomonas sp. and named Pseudomonas sp. BCK-1. The optimal temperature, pH and NaCl concentration for cell growth was $30^{\circ}C$, 7.0 and $3\%$ (w/v), respectively. After cultivation at $30^{\circ}C$, 180 rpm in 250 mL erlenmeyer flask for 72 and 168 hours, $2\%$ (w/v) arabian light crude oil (ACO) and bunker C oil (BCO) which are considered to be hardly biodegradable compounds were degraded $92\%$ (w/w) and $72\%$ (w/w), respectively.