| 학회 |
한국화학공학회 |
| 학술대회 |
2010년 봄 (04/22 ~ 04/23, 대구 EXCO) |
| 권호 |
16권 1호, p.384 |
| 발표분야 |
생물화공 |
| 제목 |
Meso-structured Onion-Like Silica for Enzyme Immobilization and Its Application to Biodiesel Reaction |
| 초록 |
Meso-structured onion-like silica (Meso-Onion-S) was prepared and used as a host of enzyme immobilization. Meso-Onion-S is comprised of 100~200 nm sized onion building unit. Each onion have well developed 10 nm sized mesopores with multi-shell structures and onion size is relatively uniform. Scanning electron microscopic image shows that a few hundred nanometer sized onions are aggregated into secondary micrometer sized particles. To take advantage of unique structure of Meso-Onion-S, we employed the nanoscale enzyme reactor (NER) approach by adsorbing enzymes and subsequent enzyme crosslinking, which effectively prevents the leaching of enzymes from Meso-Onion-S. NERs of lipase (LP) resulted in significantly increased the enzyme stability. For example, NER-LP was stable under rigorous shaking for 40 days, while the control sample of adsorbed LP showed a rapid inactivation due to rigorous enzyme leaching. ADS-LP and NER-LP in Meso-Onion-S were used to catalyze the transesterification of soybean oil with methanol in isooctane for the production of biodiesels in the form of fatty acid esters. |
| 저자 |
전승현1, 이진우2, 김병찬3, 현택환4, 김중배1
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| 소속 |
1고려대, 2포항공대 화학공학과, 3한국파스퇴르(연), 4서울대 |
| 키워드 |
Meso-structured Onion-Like Silica; Enzyme Immobilization; Biodiesel Reaction
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| E-Mail |
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| 원문파일 |
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