操作参数是否会影响喷雾干燥细菌的生存能力和生产成本? 一个实验性研究与本土的乳球菌乳酸菌亚种. 从亚马逊的手工奶酪中分离出来的乳糖
Andressa Fusieger1, Maria Tereza Cratiú Moreira1, Anderson Carlos Camargo2
1InovaLeite - Laboratório de Pesquisa em Leites e Derivados, Departamento de Tecnologia de Alimentos, Universidade Federal de Viçosa, 36570 900 Viçosa, MG, Brazil.
Food research international (Ottawa, Ont.)
|February 19, 2025
概括
喷雾干燥 乳球菌 乳球菌亚种. 使用优化的参数 (T6:0.66 kg h-1流量,入气温度为130°C) 的乳糖Q1C2可保持高细胞活力并降低生产成本. 这种方法提供了一种具有成本效益的方法,可以在不需要冷却的情况下生产稳定的乳制品初始培养.
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
- 生物技术是生物技术.
背景情况:
- 乳球菌乳酸菌亚种. 乳糖Q1C2,从巴西亚马逊手工奶酪中分离出来,是一种有价值的乳制品初始培养.
- 有效的保存方法对于保持工业应用的初始培养的生命力和功能至关重要.
研究的目的:
- 评估喷雾干燥操作参数对乳球菌乳糖亚种的细胞活力,储存稳定性和生产成本的影响. 乳糖 Q1C2.2. 这是一个很好的方法.
- 确定最佳的喷雾干燥条件,以平衡高细胞存活率与经济效率.
主要方法:
- 喷雾干燥缩的乳球菌乳糖亚种. 乳糖 Q1C2 使用再制成的牛奶作为干燥介质.
- 测试了12种不同处理组合的细胞度流速 (Fcell,inj) 和入气温度 (T°Cair,in).
- 在干燥后 (第0天) 及在4°C和25°C存储期间 (长达120天) 立即评估细胞活力,以及含水量,水活性 (aw) 和生产成本.
主要成果:
- 较低的进气温度 (115°C和130°C) 导致干燥后的生存率更高.
- 含水量和水活性 (aw) 与细胞活力相反相关.
- 治疗T6 (Fcell,inj = 0.66 kg h−1,T°Cair,in = 130°C) 显示出最好的平衡,保持了高生存率 (大约0.66 kg h−1,T°Cair,in = 130°C) 显示出最好的平衡,保持了高生存率 (大约0.66 kg h−1,T°Cair,in = 130°C). 10.00 log cfu g−1) 在4°C和25°C两种温度下120天后.
- 此外,T6还优化了能源效率,最大限度地减少了质量损失,降低了生产成本.
- 更高的F细胞,inj降低了能源成本,而更高的T°C空气增加了它们.
结论:
- 喷雾干燥是一种可行的方法,用于生产稳定,高活性的乳制品初始培养的乳球菌 (Lactococcus lactis) 子种. 乳糖 Q1C2.2. 这是一个很好的方法.
- 优化的喷雾干燥参数,特别是T6处理,为保存活跃起始培养而无需冷却提供了具有成本效益的解决方案.
- 该研究强调了这种喷雾干燥协议对乳制品初始培养的工业应用的潜力.
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