评估温度和暴露时间对技术前后过程中的益生菌生存能力的影响
M E Morán1, M P Martínez2, P J Vairoletti3
1Departamento de Investigación y Desarrollo, Planta Industrial BIOFACTORY, Reducción, Córdoba, Argentina; Departamento de Microbiología e Inmunología, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba, Argentina.
Journal of microbiological methods
|May 2, 2025
概括
益生菌酵母和乳酸细菌在料加工过程中表现出显著的耐热性. 冷干燥通过颗粒化增强益生菌的生存能力,这对于动物料应用至关重要.
科学领域:
- 动物营养 动物营养
- 微生物学 微生物学
- 食品科学 食品科学 食品科学
背景情况:
- 益生菌微生物对动物健康至关重要,但在料加工过程中面临挑战.
- 料制造中的高温和湿度可以降低益生菌的生存能力.
- 了解益生菌耐热性的关键是保持其在动物料中的有效性.
研究的目的:
- 评估温度和暴露时间对酵母和乳酸细菌在水溶液中的生存能力的影响.
- 在冷干燥后的模拟和实际料颗粒加工过程中评估益生菌生存率.
- 为了比较Saccharomyces boulardii RC009.9.的冷干燥和流化床干燥方法.
主要方法:
- 益生菌在水溶液中暴露在不同的温度和持续时间.
- 使用冷干燥,然后将其纳入料矩阵,用于颗粒试验.
- 使用冷干燥和流化床干燥对Saccharomyces boulardii RC009进行比较干燥分析.
主要成果:
- 所有测试的益生菌菌株都表现出耐热性,酵母表现出比细菌更大的耐受性.
- 萨卡罗米切斯种类 (Saccharomyces spp.) 的一种. 和Pediococcus pentosaceus表现出最高的耐热性.
- 经过冷干燥的益生菌通过模拟和实际料颗粒加工过程保持活力.
结论:
- 酵母和某些细菌具有固有的机制 (例如,热冲击蛋白,外聚糖),有助于耐热.
- 冷干燥是一种有效的方法,可以在料制造过程中保持益生菌的生存能力.
- 本研究提供了对整个料生产阶段的益生菌稳定性的全面评估.
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