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奶酪制造和成熟过程对乳球球菌菌株抗克洛斯特里迪姆活性的影响
Stefano Morandi1, Tiziana Silvetti1, Francesca Bonazza1
1National Research Council, Institute of Sciences of Food Production (CNR-ISPA), via Celoria 2, 20133 Milan, Italy.
Food research international (Ottawa, Ont.)
|April 19, 2025
概括
乳酸细菌 (LAB) 产生细菌素来对抗奶酪腐烂细菌. 奶酪制造和成熟条件显著影响细菌素的产生,但Lc. 在乳制品应用中,lactis VC106显得有前途.
科学领域:
- 食品微生物学 食品微生物学
- 乳制品科学 乳制品科学
- 抗菌剂 抗菌剂 抗菌剂
背景情况:
- 乳酸细菌 (LAB) 产生具有抗微生物特性的细菌素,可以抵抗腐烂生物.
- Clostridium 种类导致奶酪的晚吹缺陷 (LBD),影响质量.
- 优化细菌素生产对于乳制品行业有效使用至关重要.
研究的目的:
- 调查奶酪制造和成熟温度以及盐度对LAB细菌素生产的影响.
- 为了确定能够产生针对Clostridium spp.有效的细菌素的LAB菌株. 在不同的乳制品加工条件下.
主要方法:
- 选择了五种具有已知的抗克洛斯特里活性的乳球球菌菌株.
- 在最佳生长温度 (30°C) 和模拟奶酪制造条件下评估细菌素的产量.
- 在10°C的模拟成熟期内评估的细菌素 titre.
主要成果:
- 在最佳生长条件下的菌株之间,细菌素 titre 的差异是 (2.43.3 log10 IU/mL).
- 只有LC.只有LC. 在模拟奶酪制造过程中,lactis VC106产生了显著的细菌素 (2.82.9 log10 IU/mL).
- 在Lc.的细菌素 titre. 乳糖VC106在成熟过程中降低,但仍然具有抑制性 (1.61.9 log10 IU/mL在170天后).
结论:
- 奶酪制造和成熟条件会对细菌合成和抗克洛斯特里活动产生负面影响.
- 在 Lc. 乳糖VC106显示出强大的细菌素生产潜力,即使在低于最佳的乳制品加工温度下.
- 这种菌株提供了一种有前途的生物控制策略,用于防止乳制品链中的腐烂细菌.
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