从传统的新鲜山羊奶酪中分离的Enterococcus faecium F58外聚糖的发酵优化和表征
Mariem Zanzan1,2, Youssef Ezzaky1, Fouad Achemchem1
1LASIME Research Laboratory, Bioprocess and Environment Team, Agadir Superior School of Technology, Ibn Zohr University, BP 33/S, 80150 Agadir, Morocco.
Food science and biotechnology
|March 5, 2024
概括
研究人员优化了 *Enterococcus faecium* F58 的外聚糖 (EPS) 生产,从而获得了高产量. 该研究描述了EPS的特性,揭示了食品和生物技术应用的潜力.
科学领域:
- 微生物学 微生物学
- 生物技术是生物技术.
- 食品科学 食品科学 食品科学
背景情况:
- 外聚糖 (EPS) 是重要的生物聚合物,具有多种应用.
- 优化EPS从微生物来源如Enterococcus faecium的生产对于工业用途至关重要.
- 传统的发酵食品可以成为新型EPS生产微生物的来源.
研究的目的:
- 为了优化发酵过程,从 *Enterococcus faecium* F58.8 *产生外聚糖 (EPS) F58.
- 描述产生的EPS的结构和功能特性.
- 探索EPS在食品和生物技术领域的潜在应用.
主要方法:
- 采用中央复合材料设计来优化发酵参数.
- 确定了影响EPS产量的关键因素,包括酵母提取物和MnSO4度.
- 对于EPS的表征,使用了SEM-EDX,XRD,FTIR和热重力测量分析.
主要成果:
- 确定了EPS生产的最佳条件:酵母提取物4.46g/L和0.011g/LMnSO4在30°C下26小时.
- 实验和预测EPS的最大产量分别达到2.46g/L和2.86g/L.
- 鉴定发现一种无形的EPS结构,其稳定性高达200°C,具有抗粘合性质.
结论:
- 优化发酵显著提高了来自*Enterococcus faecium* F58.8的EPS产量.
- 具有特征的EPS具有理想的结构和功能性质.
- 这些发现支持这种EPS在食品和生物技术行业的应用.
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