细菌果汁的神经网络--殖民地混合优化,以澄清金属中性蛋白酶生产
Eloghosa Ikharia1, Maurice Ekpenyong1,2, David Ubi3
1Environmental Microbiology and Biotechnology Unit, Department of Microbiology, Faculty of Biological Sciences, University of Calabar, Calabar, Nigeria.
Journal of food science and technology
|June 20, 2025
概括
这项研究优化了来自Bacillus cereus的中性蛋白酶,用于工业用途. 增强的酶生产和净化显示出在食品应用领域的巨大潜力,如果汁澄清.
科学领域:
- 生物技术是生物技术.
- 酶技术 酶技术是一种
- 微生物生物化学 微生物生物化学
背景情况:
- 中性蛋白酶是由于它们的温和催化特性而必不可少的工业酶.
- 谷是一种已知的工业相关酶的来源.
- 优化酶生产对于具有成本效益的工业应用至关重要.
研究的目的:
- 从沿海沉积物中产生和表征一个中性蛋白酶Bacillus cereus菌株.
- 使用集成的RSM和ANN-ACO模型,优化生物处理介质以提高蛋白酶产量.
- 评估纯化酶的特性及其在果汁澄清中的应用.
主要方法:
- 响应表面方法 (RSM) 和人工神经网络-殖民地优化 (ANN-ACO) 用于媒介优化.
- 酶净化和表征 (活性,稳定性,pH,温度最佳).
- 研究酶的金属蛋白酶性质和在果汁澄清中的应用.
主要成果:
- 该ANN-ACO模型显著优于RSM,预测蛋白酶活性增加6.75倍.
- 优化的介质组成:糖蜜 (45.00 g/L),尿素 (9.81 g/L),素 (25.45 g/L),Ca2+ (1.23 g/L),Zn2+ (0.021 g/L),Mn2+ (0.020 g/L),以及4.45%的注射剂.
- 获得了10倍净化的46.6kDa中性金属蛋白酶,在pH 6.5和45-55°C时具有最佳活性;它成功澄清了水果汁.
结论:
- 集成的ANN-ACO和RSM成功优化了生物工艺以生产中性蛋白酶.
- 标志性的Bacillus cereus中性蛋白酶表现出适用于工业应用的特性.
- 该酶显示出重要的生物技术潜力,特别是在食品加工和果汁澄清方面.
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