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储存的乳清黄油中的水热力学和脂质氧化
D Cais-Sokolińska1, P Bielska1, M Rudzińska2
1Department of Dairy and Process Engineering, Faculty of Food Science and Nutrition, Poznań University of Life Sciences, 60-624 Poznań, Poland.
Journal of dairy science
|November 3, 2023
概括
乳清黄的质量通过监测水的热力学和胆固醇氧化来评估. 储存条件显著影响了水的活动和分子运动,较高的温度加快了变化,增加了光泽.
科学领域:
- 食品科学 食品科学 食品科学
- 乳制品技术 乳制品技术
- 分析化学 分析化学
背景情况:
- 乳清奶酪中的乳清奶油提供了传统奶油奶油的替代品.
- 了解其存储期间的质量和安全性对于其市场可行性至关重要.
研究的目的:
- 调查储存条件对水热力学和乳清黄油中胆固醇氧化产物的影响.
- 为了评估乳清黄油的质量和安全标记,与奶油黄油相比.
主要方法:
- 在4个月的不同储存温度 (3°C和13°C) 下分析水损失和水活动.
- 使用动力学分析评估水分子的转换运动.
- 测量光泽度,黄色度指数,色度和棕色度指数.
- 脂肪酸,三糖醇,胆固醇和胆固醇氧化产物 (COP) 的量化.
- 使用三因子ANOVA进行统计分析.
主要成果:
- 在储存期间,乳清黄的水损失和水活性下降,特别是在13°C时.
- 乳清黄油中的水分子运动比黄油更快,特别是在13°C时.
- 较高的储存温度增加了这两种黄油的光泽.
- 在乳清黄油和13°C的黄油之间观察到颜色和色指数的显著差异.
- 虽然乳清黄油的初始胆固醇含量较高,但在储存期间COP显著增加,检测到环氧化物和三醇胆固醇.
结论:
- 储存温度和持续时间显著影响乳清黄油的物理和化学特性.
- 与奶油黄油相比,乳酪黄油在不同的储存条件下表现出明显的水动态和颜色变化.
- 尽管最初的胆固醇氧化产品较低,但在储存期间它们的增加,以及特定化合物的存在,需要进一步调查以评估安全性.
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