重组表达和生物过程优化Priestia megateriumα-amylase及其对面团发酵效率的影响
Atacan Erdem1, Kübra Akbulut2, Mustafa Türker1
1Pak Gıda Üretim ve Pazarlama A.Ş., Kocaeli, Türkiye.
Chemistry & biodiversity
|July 12, 2025
概括
优化了使用新型生物质/IPTG比率的Priestia巨类α-氨基酶 (PmAmy) 生产. 这种酶在面团发酵中表现出高效率,为食品生物技术提供了可扩展和可持续的选择.
科学领域:
- 生物技术是生物技术.
- 酵素工程是什么? 酶工程是什么
- 工业微生物学 工业微生物学
背景情况:
- 阿尔法氨基酶对于粉降解和工业过程如面团发酵至关重要.
- 优化α-氨酶的生产是具有挑战性的,因为微生物来源,培养条件和诱导方法的变化.
- 普里斯蒂亚巨α-氨基酶 (PmAmy) 具有工业应用的潜力,但需要优化生产.
研究的目的:
- 首次优化普里斯蒂亚巨类α-氨基酶 (PmAmy) 的生产.
- 为了确定控制生物工艺生产的最佳生物质-IPTG比率.
- 评估PmAmy补充对面团发酵效率的影响.
主要方法:
- 控制的生物工艺优化,专注于特定条件下的生物质与IPTG比率 (1.0vm空气流量,37°C,1000rpm,pH7.0).
- 在特定的生长速度 (μ = 0.22 h−1) 进行22小时的料批发发酵.
- 面团发酵试验比较PmAmy的性能与商业的alpha-amylase.
主要成果:
- 最佳的生物质与IPTG比率被确定为20g_生物质mmol_IPTG−1.1.
- 在细胞度为22.3 ± 5.3 g L-1.3 的情况下,达到67.7 ± 4.0 U mL-1 的高α-氨酶活性.
- 与商业标准相比,PmAmy在面团发酵中表现出99%的效率,即使是在初级回收形式.
结论:
- 优化的生物质/IPTG比率为PmAmy生产提供了一个可扩展和可持续的战略.
- 由于其高效率和一致的性能,PmAmy显示了工业烤应用的巨大潜力.
- 这项研究有助于提高食品生物技术的发酵效率,产品质量和经济可行性.
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