在多层复合载体SiO2@MnO2@MAF-7上对大黄过氧酶的固定化研究
Mengjie Huang1, Baihui Zhang1, Xiangyu Jiang1
1Shandong Laboratory of Advanced Biomaterials and Medical Devices in Weihai, Weihai 264200, China.
Materials (Basel, Switzerland)
|January 28, 2026
概括
研究人员开发了一种新的SiO2@MnO2@MAF-7载体,以固定胡卜过氧化酶 (HRP),显著提高酶的稳定性和可重复使用性,用于工业应用.
科学领域:
- 生物技术是生物技术.
- 材料科学 材料科学 材料科学
- 酵素工程是什么? 酶工程是什么
背景情况:
- 自由的胡卜过氧化酶 (HRP) 缺乏稳定性,难以恢复.
- 由于这些稳定性和恢复性挑战,HRP的工业应用受到限制.
研究的目的:
- 为HRP开发一个具有高承载能力和长期稳定的多层复合物固定载体.
- 在开发的载体上对HRP进行不同固定策略的比较.
- 为了评估固定HRP的性能和稳定性.
主要方法:
- 通过溶热自组装制备SiO2@MnO2@MAF-7核心结构载体.
- 吸附的比较,共价交叉链接,和封装用于HRP固定.
- 使用BET,XRD和FTIR进行材料结构的表征.
- 酶动力学参数的确定和活性保留试验.
主要成果:
- SiO2@MnO2@MAF-7载体表现出高的特定表面积 (251.99 m2/g) 和中等孔面积 (12.47 nm).
- 实现了HRP负载为50.37U/mg,具有85.03%的固定效率.
- 固定HRP显示Km下降42%,在80°C和pH4-9时活动保留增加35-50%,在5次使用后活动保留65%.
- 通过刚性支持,催化协同作用和受限保护,证明了酶稳定性的协同改进.
结论:
- 新的SiO2@MnO2@MAF-7载体有效地使HRP停滞不前,克服了稳定性和恢复问题.
- 这种固定化策略为氧化还原酶的工业应用提供了一种新的方法.
- 复合结构的综合作用显著提高了酶的性能和耐用性.
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