优化益生菌低脂酸奶:将脱脂大米加入的好处,以提高质量和功能
Khalid A Alsaleem1, Mahmoud E A Hamouda2
1Department of Food Science and Human Nutrition College of Agriculture and Food, Qassim University Buraydah Saudi Arabia.
Food science & nutrition
|December 26, 2024
概括
在低脂酸奶中添加高达1.5%的脱脂大米 (DRB),可以增加益生菌数量和营养价值. 适度的DRB可以提高LFY质量,而不会显著损害感官属性.
科学领域:
- 食品科学与技术 食品科学与技术
- 营养科学 营养科学
- 微生物学 微生物学
背景情况:
- 低脂酸奶 (LFY) 往往缺乏理想的营养和功能性质.
- 脱脂大米 (DRB) 是一种富含营养的副产品,有可能用于食品强化.
研究的目的:
- 评估将不同度的DRB纳入益生菌LFY对质量,微生物和感官属性的影响.
- 确定最佳的DRB水平,以提高LFY的营养和功能特性,同时保持消费者接受度.
主要方法:
- 益生菌LFY配备了0.5%,1%,1.5%和2%的DRB.
- 在4°C的21天内评估了近距离的组成,质性 (硬度,粘度,G',G′′),协同,颜色和感官属性.
- 微生物学分析包括总细菌计数 (TBC) 和特定的益生菌菌株 (Lactobacillus delbrueckii ssp. 布尔加里克斯 (Bulgaricus),热菌 (Streptococcus thermophilus),双杆菌 (Bifidobacterium bifidum) 这几种细菌都存在.
主要成果:
- 添加DRB显著增加了益生菌数量和细菌稳定性,特别是在1%和1.5%度下.
- 营养状况改善,增加了总固体 (TS),蛋白质,灰,纤维和抗氧化活性.
- 硬度,粘度和风湿学参数增加,而随着DRB的纳入,协同作用减少.
- 较高的DRB水平 (2%) 对颜色 (光度降低,色增加) 和色彩,味道和整体可接受性的感官得分产生了负面影响.
结论:
- 在LFY中适度包含DRB (高达1.5%) 增强了益生菌活力,营养含量和质地.
- 这种强化水平在改善功能性质和可接受的感官质量之间提供了平衡.
- DRB是开发增强型益生菌低脂酸奶的一个有前途的成分.
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