富含蛋白质分离物的益生菌牛奶:物理化学,有机感和微生物学特性
Małgorzata Pawlos1, Katarzyna Szajnar1, Magdalena Kowalczyk1
1Department of Dairy Technology, Institute of Food Technology and Nutrition, College of Natural Sciences, University of Rzeszow, Cwiklinskiej 2D, 35-601 Rzeszow, Poland.
Foods (Basel, Switzerland)
|October 16, 2024
概括
将大豆,豆类和乳清蛋白分离物添加到牛奶中会影响益生菌的生长和发酵牛奶的特性. 豆蛋白分离物显著增强了Lacticaseibacillus casei的生长,而其他物质则对L. johnsonii和物理化学特征表现出不同的影响.
科学领域:
- 食品科学与技术 食品科学与技术
- 微生物学 微生物学
- 乳制品科学 乳制品科学
背景情况:
- 植物蛋白分离物可以改善益生菌培养的生长,并修改发酵牛奶的特性.
- 了解这些相互作用对于开发功能性发酵食品至关重要.
研究的目的:
- 评估大豆,豆类和乳清蛋白分离物对益生菌生长 (Lacticaseibacillus casei,Lactobacillus johnsonii) 的影响.
- 评估发酵牛奶对物理化学 (酸度,协同作用,颜色) 和感官特性的影响.
- 确定蛋白质分离物度 (1.5%和3.0%) 和储存时间 (21天) 的影响.
主要方法:
- 发酵牛奶是用不同度的大豆,豆和乳清蛋白分离物制备的.
- 在冷藏储存期间分析了益生菌的生存能力,pH值,协同作用,颜色和感官属性.
- 使用了Lacticaseibacillus casei和Lactobacillus johnsonii的单种植物.
主要成果:
- 豆蛋白分离物 (PPI) 的1.5%和3.0%增加了牛奶的pH值.
- 乳清蛋白分离物 (WPI) 在1.5%和3.0%降低了L. casei发酵牛奶中的协同作用.
- 豆蛋白分离剂 (SPI) 和1.5%的PPI最初减少了L. casei的数量,而PPI度的增加增强了L. casei的生长. 在WPI度影响L. johnsonii和L. casei的增长不同. 益生菌种群在储存期间下降.
- 蛋白质分离物显著影响了颜色和感官特性.
结论:
- 蛋白质分离物可用于制造多样化且可能有益于健康的发酵乳制品.
- 特定的分离物和度会对益生菌的生存和发酵牛奶的特性产生不同的影响.
- 对隔离物-益生菌相互作用的进一步研究可以促进功能性食品的开发.
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