产生细菌素的乳糖菌对切达奶酪成熟的影响
Susana C Ribeiro1, Agathe Blackeway1, Sofia Pm Silva1
1Institute of Agricultural and Environmental Research and Technology (IITAA), Faculty of Agrarian Sciences and the Environment, University of the Azores, Angra do Heroísmo, Azores, Portugal.
概括
添加Lactococcus lactis L3A21M1,一种产生细菌素的细菌菌,显著增强了切达奶酪的成熟. 这种辅助培养加速了蛋白质分解,增加了自由氨基酸,并软化了奶酪质地.
科学领域:
- 乳制品微生物学 乳制品微生物学
- 食品科学与技术 食品科学与技术
- 细菌素研究研究 细菌素研究
背景情况:
- 乳球菌生产细菌素,它们是抗菌素.
- 细菌素的生产可以影响奶酪成熟过程.
- 辅助培养用于增强奶酪的特性.
研究的目的:
- 为了研究Lactococcus lactis亚种的影响. 乳糖L3A21M1,一个细菌素 (乳素481) 生产者,关于切达奶酪成熟.
- 为了比较一种产生细菌素的菌株与一种非产生细菌素的菌株的影响,作为辅助培养.
- 在奶酪成熟过程中评估微生物,物理化学,纹理,蛋白质和的特征.
主要方法:
- 实验室规模的三重试验中切达式奶酪的生产.
- 三种奶酪类型:对照奶酪,产生细菌素的补充奶酪 (Bac+) 和非产生细菌素的补充奶酪 (Bac-).
- 在成熟28天后对微生物,物理化学,纹理,蛋白质和的分析.
主要成果:
- 产生细菌素的Lc. 乳糖L3A21M1显著增加蛋白质分解,由较高的分数和自由氨基酸 (p < 0.05) 证明.
- 添加了Lc. 这就是添加Lc. 乳糖L3A21M1导致奶酪质地更柔软.
- 在奶酪成熟过程中,用生产细菌的产品显著降低了疏水性 (p < 0.05).
结论:
- 产生细菌素的菌株Lc. 乳糖L3A21M1加速切达奶酪蛋白质分解作为辅助培养.
- 这种菌株诱导起始培养溶解,在成熟过程中增加自由和氨基酸.
- 辅助培养 Lc. 的情况. 乳糖L3A21M1通过产生细菌素积极调节奶酪成熟和质地.
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