Byoung Wook JEON, Hyun Sook KIM, Dae Haeng CHO, Hyeok LEE, Yong Hwan KIM
언어
영어(ENG)
URL
https://www.earticle.net/Article/A104792
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원문정보
초록
영어
Lactide that have been used as monomer for ring-opening polymerization of PLA (poly lactic acid) is important material for industrial production of PLA which is one of bio-plastics. However, enantioselective reaction from lactate to lactide has been not reported so in this study lactide was enantioselectively synthesized by esterification of lactate using lipase. The one of many lipases which was CAL-B only could synthesize lactide as highest conversion and showed R-specific enantioselectivity.[1],[2] Although lactide and lactate have less solublility than other ether solvent[3],[4], hexane is used as an appropriate solvent for reaction due to showing the higher activity than any other solvents. Also when the reaction temperature is changed from 5℃ to 60℃, the rate of consumption and conversion is gradually increased. However, the final amount of lactide is still same after 24 hours in spite of increasing temperature. The result of 2nd reaction showed that reaction was limited by absorption ability of molecular sieve about alcohol. Therefore, if a process for the effective removal of alcohol were developed, Enantiospecific lactide is produced by CAL-B with more efficiency.
키워드
lactidelactateCAL-Benantioselectivity
저자
Byoung Wook JEON [ Dept. of Chemical Eng. Kwangwoon University ]
Hyun Sook KIM [ Dept. of Chemical Eng. Kwangwoon University ]
Dae Haeng CHO [ Dept. of Chemical Eng. Kwangwoon University ]
Hyeok LEE [ Korea Research Institute of Chemical Technology ]
Yong Hwan KIM [ 2Dept. of Chemical Eng. Kwangwoon University, Seoul, 139-701, Korea Research Institute of Chemical Technology,Daejeon,305-600. ]
한국생물공학회 [The Korean Society for Biotechnology and Bioengineering]
설립연도
1984
분야
공학>생물공학
소개
이 법인은 생물 공학의 발전과 보급에 이바지하고, 회원 상호 간의 연구 협력과 친목을 도모함을 목적으로 한다
1. 생물공학 분야의 발전을 위한 연구 협력
2. 생물공학의 실용화를 촉진시키기 위한 산학 협동
3. 학술연구 발표회, 강연회, 연수회 등 학술활동의 개최
4. 국,영문 학술지,소식지,학술회의 Proceedings 및 학술도서의 발간
5. 생물공학 발전을 위한 정책 건의
6. 기타 국제 교류 등 본 학회의 목적 달성을 위한 제반 활동