媒体配方使用统计方法来增强α-氨酶的生产,以通过Bacillus subtilisVSP4在固态发酵下进行Au-NPs的绿色合成
Vimalkumar S Prajapati1, Vaibhavkumar N Mehta2, Swati K Patel3
1Division of Microbial and Environmental Biotechnology, ASPEE SHAKILAM Biotechnology Institute (ASBI), Navsari Agricultural University, Surat, Gujarat, India.
Frontiers in bioengineering and biotechnology
|June 18, 2025
概括
这项研究使用统计方法优化了Bacillus subtilis VSP4的α-氨酶生产. 然后使用增强的酶合成具有保留活性的金纳米粒子 (Au-NPs).
科学领域:
- 生物技术是生物技术.
- 纳米技术 纳米技术
- 微生物学 微生物学
背景情况:
- 黄金纳米粒子 (Au-NPs) 在各种应用中显示出显著的潜力.
- 来自Bacillus subtilis的细胞外氨酶是工业过程中的关键酶.
研究的目的:
- 在固态发酵 (SSF) 下优化 Bacillus subtilis VSP4 的α-氨酶生产.
- 使用产生的α-氨基酶合成Au-NPs,保持酶活性.
主要方法:
- 利用响应表面方法 (RSM) 的Plackett-Burman设计和中央复合设计 (CCD) 来优化SSF条件.
- 确定了粉,酵母提取物和CaCl2作为酶生产的关键因素.
- 验证了优化条件并合成了Au-NPs.
主要成果:
- 每5克小麦中粉 (0.05克),酵母提取物 (0.1克) 和CaCl2 (5毫米) 的优化水平产生了最大的α-氨酶 (169.72U/gds).
- 统计模型显示高显著性 (F值=18.36) 和良好匹配 (R2=0.94).
- 合成的Au-NP的平均值为5.17 ± 0.85nm,表面等离子体共振峰值为528nm.
结论:
- 统计实验设计在SSF下显著增强了Bacillus subtilis VSP4的α-amylase生产.
- 生产的α-氨酶有效合成了Au-NPs,证明了保留的酶活性.
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