从Aspergillus niger在浸泡发酵中生产的细胞酶的生产,优化和表征,通过响应表面方法学
Kayynat Shoukat1, Irfan Ahmad2, Hafiz Abdullah Shakir3
1Department of Biotechnology, University of Sargodha, Sargodha, Punjab, Pakistan.
Journal of microbiological methods
|December 7, 2025
概括
这项研究优化了使用Aspergillus niger的果皮的细胞酶生产,实现了显著的产量增加. 该酶显示了工业应用的潜力,包括高效的糖化过程.
科学领域:
- 生物技术是生物技术.
- 酵素工程是什么意思 酵素工程
- 微生物生产 微生物生产
背景情况:
- 细胞酶是一种具有广泛工业应用的关键酶.
- 研究越来越多地集中在高效和可持续的细胞质生产方法上.
- 农业工业废物,如果皮,为微生物酶合成提供了可行的基质.
研究的目的:
- 为了优化细胞酶的生产,使用果皮作为碳源的尼日利亚虫.
- 在各种条件下描述酶的活性和稳定性.
- 评估在糖化过程中产生的细胞酶的潜力.
主要方法:
- 一个因素一次 (OFAT) 优化,以提高初始收益率.
- 普莱克特-伯曼设计 (PBD) 用于选营养成分.
- 响应表面方法 (RSM) 与中央复合设计 (CCD) 进行参数优化.
- 酶的表征包括pH值,最佳温度和动力参数 (Km,Vmax).
主要成果:
- 优化条件导致细胞酶产量增加了3.8倍.
- 通过RSM优化,确定了增强酶活性的关键营养成分 (酵母提取物,MgSO4,KH2PO4, (NH4) 2SO4).
- 碳氧甲基细胞酶 (CMCase) 和纸细胞酶 (FPase) 的活性分别增加了17.9%和86.8%.
- 在特定的温度和pH值下确定了最佳活性和稳定性.
- 该酶显示了糖化潜力,在28小时内实现了11%的糖化.
结论:
- 果皮是Aspergillus niger生产细胞酶的有效基质.
- 优化的酶表现出增强的活性和稳定性,适合工业应用.
- 这项研究证明了微生物细胞酶在生物质糖化中的潜力.
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