Facial preparation of magnetic lipase as efficient biocatalyst to resolute esters enantioselectively
Yanmei Zhang , Chunshan Quan , Baoquan Liu , Shengdi Fan
Chemical Research in Chinese Universities ›› 2015, Vol. 31 ›› Issue (6) : 997 -1002.
Facial preparation of magnetic lipase as efficient biocatalyst to resolute esters enantioselectively
Magnetic lipase was prepared by a facial and cost-effective method. Lipase from Pseudomonase cepacia was covalently linked to Fe3O4 nanoparticles, which were produced by co-precipitating Fe2+and Fe3+ ions in ammonia solution and subsequent coating with 3,4-dihydroxylaldehyde. Magnetic Fe3O4 nanoparticles modified with 3,4-dihydroxylaldehyde bonded lipase efficiently(47 mg/g). The resulting magnetic-lipase is active(0.68 μmol·min–1·mg–1) and enantioselective(e.e. of the product >98%) in the hydrolysis of racemic 1-phenylethyl acetate. Furthermore, as a heterogeneous catalyst, the magnetic-lipase can be magnetically recycled, and a retained activity of 48% was obtained even after 6 cycles.
Covalent attachment / 3,4-Dihydroxylaldehyde / Enantioselective hydrolysis / Lipases from Pseudomonase cepacia / Fe3O4 nanoparticle / Recycle
| [1] |
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| [2] |
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| [3] |
|
| [4] |
|
| [5] |
|
| [6] |
|
| [7] |
|
| [8] |
|
| [9] |
|
| [10] |
|
| [11] |
|
| [12] |
|
| [13] |
|
| [14] |
|
| [15] |
|
| [16] |
|
| [17] |
|
| [18] |
|
| [19] |
|
| [20] |
|
| [21] |
|
| [22] |
|
| [23] |
|
| [24] |
|
| [25] |
|
| [26] |
|
| [27] |
|
| [28] |
|
| [29] |
|
| [30] |
|
| [31] |
|
| [32] |
|
| [33] |
|
| [34] |
|
| [35] |
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