离子液体中脂肪酶催化拆分外消旋烯丙酮醇反应
以离子液体为溶剂,考察了溶剂类型、水活度、温度、pH值和共溶剂等因素对脂肪酶催化拆分外消旋烯丙酮醇(R,S)-4-羟基-3-甲基-2-(2-丙烯基)-2-环戊烯-1-酮反应的影响,并与常用于外消旋烯丙酮醇拆分的有机溶剂乙酸乙烯酯进行了比较.结果表明,在离子液体[bmim]PF6中脂肪酶的催化性能较好,酶初始反应速率为18.48μmol/(g·min),半衰期为74.53h,高于在乙酸乙烯酯中的相应值(9.18μmol/(g·min)和64.29h).但离子液体中拆分反应的转化率低于在乙酸乙烯酯中的转化率。可以通过向离子液体中补加酰基供体来提高外消旋烯丙酮醇的转化率.两种反应介质中最佳酶反应条件...
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Published in | Chinese journal of catalysis Vol. 27; no. 9; pp. 799 - 804 |
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Main Author | |
Format | Journal Article |
Language | Chinese |
Published |
浙江大学宁波理工学院,浙江,宁波,315100%浙江大学化学工程与生物工程学系,浙江,杭州,310027
2006
福建龙岩学院化学系,福建,龙岩,364000 浙江大学化学工程与生物工程学系,浙江,杭州,310027%浙江大学化学工程与生物工程学系,浙江,杭州,310027 |
Subjects | |
Online Access | Get full text |
ISSN | 0253-9837 1872-2067 |
DOI | 10.3321/j.issn:0253-9837.2006.09.011 |
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Abstract | 以离子液体为溶剂,考察了溶剂类型、水活度、温度、pH值和共溶剂等因素对脂肪酶催化拆分外消旋烯丙酮醇(R,S)-4-羟基-3-甲基-2-(2-丙烯基)-2-环戊烯-1-酮反应的影响,并与常用于外消旋烯丙酮醇拆分的有机溶剂乙酸乙烯酯进行了比较.结果表明,在离子液体[bmim]PF6中脂肪酶的催化性能较好,酶初始反应速率为18.48μmol/(g·min),半衰期为74.53h,高于在乙酸乙烯酯中的相应值(9.18μmol/(g·min)和64.29h).但离子液体中拆分反应的转化率低于在乙酸乙烯酯中的转化率。可以通过向离子液体中补加酰基供体来提高外消旋烯丙酮醇的转化率.两种反应介质中最佳酶反应条件均为水活度0.17,温度40℃和pH=7,但加入共溶剂后,离子液体中脂肪酶催化拆分外消旋烯丙酮醇的效率降低,而在乙酸乙烯酯中则有所提高. |
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AbstractList | O643%Q55; 以离子液体为溶剂,考察了溶剂类型、水活度、温度、pH值和共溶剂等因素对脂肪酶催化拆分外消旋烯丙酮醇(R,S)-4-羟基-3-甲基-2-(2-丙烯基)-2-环戊烯-1-酮反应的影响,并与常用于外消旋烯丙酮醇拆分的有机溶剂乙酸乙烯酯进行了比较.结果表明,在离子液体[bmim]PF6中脂肪酶的催化性能较好,酶初始反应速率为18.48μmol/(g·min),半衰期为74.53 h,高于在乙酸乙烯酯中的相应值(9.18μmol/(g·min)和64.29 h).但离子液体中拆分反应的转化率低于在乙酸乙烯酯中的转化率,可以通过向离子液体中补加酰基供体来提高外消旋烯丙酮醇的转化率.两种反应介质中最佳酶反应条件均为水活度0.17,温度40℃和pH=7,但加入共溶剂后,离子液体中脂肪酶催化拆分外消旋烯丙酮醇的效率降低,而在乙酸乙烯酯中则有所提高. 以离子液体为溶剂,考察了溶剂类型、水活度、温度、pH值和共溶剂等因素对脂肪酶催化拆分外消旋烯丙酮醇(R,S)-4-羟基-3-甲基-2-(2-丙烯基)-2-环戊烯-1-酮反应的影响,并与常用于外消旋烯丙酮醇拆分的有机溶剂乙酸乙烯酯进行了比较.结果表明,在离子液体[bmim]PF6中脂肪酶的催化性能较好,酶初始反应速率为18.48μmol/(g·min),半衰期为74.53h,高于在乙酸乙烯酯中的相应值(9.18μmol/(g·min)和64.29h).但离子液体中拆分反应的转化率低于在乙酸乙烯酯中的转化率。可以通过向离子液体中补加酰基供体来提高外消旋烯丙酮醇的转化率.两种反应介质中最佳酶反应条件均为水活度0.17,温度40℃和pH=7,但加入共溶剂后,离子液体中脂肪酶催化拆分外消旋烯丙酮醇的效率降低,而在乙酸乙烯酯中则有所提高. |
Author | 王永泽 梅乐和 钟春龙 姚善泾 朱自强 |
AuthorAffiliation | 浙江大学化学工程与生物工程学系,浙江杭州310027 浙江大学宁波理工学院,浙江宁波315100 福建龙岩学院化学系,福建龙岩364000 |
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Author_FL | YAO Shanjing MEI Lehe WANG Yongze ZHONG Chunlong ZHU Ziqiang |
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Keywords | 脂肪酶 离子液体 拆分 (R,S)-4-羟基-3-甲基-2-(2-丙烯基)-2-环戊烯-1-酮 |
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Snippet | 以离子液体为溶剂,考察了溶剂类型、水活度、温度、pH值和共溶剂等因素对脂肪酶催化拆分外消旋烯丙酮醇(R,S)-4-羟基-3-甲基-2-(2-丙烯基)-2-环戊烯-1-酮反应的影响,并... O643%Q55; 以离子液体为溶剂,考察了溶剂类型、水活度、温度、pH值和共溶剂等因素对脂肪酶催化拆分外消旋烯丙酮醇(R,S)-4-羟基-3-甲基-2-(2-丙烯基)-2-环戊烯-1-酮反应的影响,... |
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Title | 离子液体中脂肪酶催化拆分外消旋烯丙酮醇反应 |
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