油脂混合物的化学组成和结晶行为,用于可扩散脂肪的应用
Maureen Gerlei1, Hugo Pierson2, Marc Ponçot2
1Laboratoire d'Ingénierie des Biomolécules (LIBio), Université de Lorraine, F-54500 Vandœuvre-lès-Nancy, France.
Foods (Basel, Switzerland)
|October 26, 2024
概括
这项研究探讨了可散布脂肪的脂质结晶,优化了消费者偏好的脂肪酸概况. 控制冷却动力学会影响晶体结构,从而提高传播能力和营养效益,而不是黄油.
科学领域:
- 食品科学与技术 食品科学与技术
- 材料科学 材料科学 材料科学
- 营养科学 营养科学
背景情况:
- 欧洲消费者越来越多地喜欢有利的农业环境因素和当地采购的可涂抹脂肪.
- 替代棕,子和雪花等脂肪的原因是对更健康,更可持续的选择的需求.
- 在可散布脂肪中达到平衡的脂肪酸概况是主要的配方目标.
研究的目的:
- 为了研究含有油菜油和无水乳制品脂肪的脂质混合物在4°C的结晶行为.
- 了解冷却动力学对多态结构形成的影响.
- 评估由此产生的晶体结构是否适用于可散布脂肪的应用.
主要方法:
- 使用差分扫描热量计 (DSC) 和X射线衍射的多尺度方法.
- 控制的冷却动力学实验在1,5,10°C分钟-1.1的速度下进行.
- 与乳制品脂肪相比,停止和返回方法分析结晶过渡.
主要成果:
- 添加了富含多不和脂肪酸 (PUFA) 的菜油,改善了原性和血栓性指数.
- 冷却速度显著影响晶体结构形态 (针头,球状石) 和大小.
- 观察到2L状结构内占主导地位的β'多态形式,表现出比乳脂更快的过渡.
- 实现了最佳的扩散性 (10°C时固体脂肪含量<32%) 和理想的口感.
结论:
- 控制的结晶对于开发具有增强营养和感官特性的可扩散脂肪至关重要.
- 研究的脂质混合物为黄油提供了更健康的替代品,满足消费者对可持续和功能性食品的需求.
- 鉴定到的晶体结构为制造高品质的散布式脂肪产品提供了基础.
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