An ideal enzyme immobilization carrier: a hierarchically porous cellulose monolith fabricated by phase separation method

An ideal enzyme immobilization carrier: a hierarchically porous cellulose monolith fabricated by phase separation method
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理想的酶固定化载体:相分离法制备的分级多孔纤维素整体料

DOI:
10.1515/pac-2017-0710
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发表时间:
2018-04
影响因子:
1.8
通讯作者:
Uyama Hiroshi
Uyama Hiroshi
中科院分区:
化学4区
文献类型:
--
作者:
Xin Yuanrong;Wang Guowei;Han Wenjuan;Shen Yehua;Uyama Hiroshi

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摘要纤维素整体柱是一种新型的固定化酶的固体载体。经过一系列的修饰,得到了琥珀酰亚胺碳酸酯(SC)活化的纤维素整体柱(SCCL整体柱),并将其用于辣根过氧化物酶(HRP)模型酶的共价键合。SCCL整体柱对HRP的固定量为21.0 mg/g。热稳定性测试表明,固定化HRP表现出很大程度上改善了其自由对应物相比,热阻。对固定化酶的重复使用性进行了研究,固定化酶可重复使用10次以上,酶活力无明显损失。因此,纤维素整体柱是固定化酶的理想载体。
Abstract Cellulose monolith with a hierarchically porous morphology was utilized as a novel solid support for enzyme immobilization. After a series of modifications, succinimidyl carbonate (SC)-activated cellulose monolith (SCCL monolith) was obtained and it was employed to immobilize a model enzyme (horseradish peroxidase, HRP) through covalent bonding. The HRP immobilization capacity on SCCL monolith was calculated as 21.0 mg/g. The thermal stability measurement illustrated that the immobilized HRP exhibited a largely improved thermal resistance compared to its free counterpart. The reusability of the immobilized HRP was investigated, and it could be reused at least 10 cycles without significant activity loss. Therefore, cellulose monolith is found to be an ideal solid support for enzyme immobilization.
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期刊: PHYTOCHEMISTRY
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