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Catalase 의 고정화를 이용한 알코올감지용 바이오센서의 특성 연구
주현,김용환,변석훈,유영제 ( Hyun Joo,Yong Hwan Kim,Suk Hun Byun,Young Je Yoo ) 한국화학공학회 1996 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.34 No.1
An ethanol-sensing biosensor was developed using catalase reaction. The method consists of supplying alcohol and given concentration of hydrogen peroxide, which reacts competitively with catalase. The resulting amount of oxygen from this reaction is analysed using a dissolved oxygen(DO) electrode. The sensor can be also used for alcohols other than ethanol. In the developed sensor, the measurable concentration range was about 18 mM of ethanol and the response time was within 30-90 seconds. The proposed sensing system is simpler and better in sensing performance compared to the systems using alcohol oxidase or alcohol dehydrogenase where NAD(H) has to be supplied.