皮克林乳液中酶和纳米颗粒之间的pH依赖的静电相互作用 - 对活性和滴滴大小的影响
Maximilian Seiler1, Sebastian Stock2, Anja Drews1
1Process Engineering at Life Science Engineering, Wilhelminenhofstraße 75 A, Berlin, Germany.
Journal of biotechnology
|January 20, 2024
概括
皮克林乳液 (PE) 为生物催化剂提供了增强的稳定性. 粒子电荷影响酶活性和滴滴大小,为多相酶反应提供了一个新的优化参数.
科学领域:
- 生物催化剂是一种生物催化剂.
- 合体和表面科学科学
- 乳液技术 乳液技术
背景情况:
- 皮克林乳液 (PE) 是由固体纳米粒子稳定,比表面活性剂稳定乳液提供优势.
- 由于其稳定性和可调节性质,PE越来越多地用于多相生物催化剂.
- 对于优化生物催化效率来说,PE内部的酶固定是至关重要的.
研究的目的:
- 为了研究pH值,盐强度和粒子表面电荷对皮克林乳液中的酶活性的影响.
- 分析酶-颗粒相互作用对滴滴大小和乳液稳定性的影响.
- 探索粒子电荷作为优化PE中的酶反应的新参数.
主要方法:
- 用不同的粒子表面电荷制备皮克林乳液.
- 在不同的pH和盐条件下,对两种脂酶 (Candida antarctica lipase A和Candida rugosa lipase) 的酶活性测定.
- 使用显微镜进行滴滴大小分析,以评估乳液稳定性和酶-颗粒相互作用.
主要成果:
- 酶活性最佳受到粒子电荷的影响;CaLA的最佳从pH 6.5转移到pH 5与负电荷粒子.
- 关于CRL的最佳活性保持在pH5-5.5左右的稳定,不论粒子电荷如何.
- CaLA的添加影响了基于粒子电荷的滴滴大小 (正的增加,负的减少).
- CRL和颗粒之间的静电吸引显著增加了滴滴直径,导致PE不稳定.
结论:
- 粒子表面电荷是调整酶活性和优化皮克林乳液中的生物催化过程的关键参数.
- 酶-粒子静电相互作用显著影响滴滴大小和乳液稳定性.
- 这些发现为设计高效的多相生物催化剂的先进皮克林乳液系统提供了基础.
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