提取pH对大豆油体的乳液稳定性和表面蛋白质结构的影响
Ning Chen1, Ziheng Wang1, Jianyu Zhu2
1College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China.
Food chemistry
|February 1, 2025
概括
性提取条件优化大豆油体 (SOB) 乳液稳定性. 提取pH显著影响SOB表面蛋白质结构,pH为11.0产生最佳结果.
科学领域:
- 食品科学 食品科学 食品科学
- 生物化学 生化学
- 蛋白质化学 蛋白质化学
背景情况:
- 大豆油体 (SOBs) 是大豆中重要的脂质-蛋白质复合体.
- 了解SOB的稳定性和表面蛋白质结构对于食品加工至关重要.
- 提取pH是影响SOB特性的一个关键因素.
研究的目的:
- 为了研究提取pH对大豆油体 (SOB) 乳液稳定性的影响.
- 在不同的pH条件下分析SOB表面蛋白的结构变化.
- 为了确定SOB乳液稳定性和蛋白质结构的最佳提取pH值.
主要方法:
- 大豆油体 (SOBs) 在pH范围为6.0至11.0的范围内提取.
- 在每个提取条件下评估了乳液稳定性.
- 使用评估α-螺旋和β-片含量和光强度的技术,分析了SOB表面蛋白质结构.
- 进行了微形态分析,以评估SOB分散.
- 评估了氨基酸分数,表面水性和自由硫含量的变化.
主要成果:
- 提取pH值显著影响了SOB乳液稳定性和表面蛋白质结构.
- 与酸性或中性条件相比,性条件 (pH 11.0) 导致SOB分散的程度更高.
- 在pH11.0下观察到SOB表面蛋白质的明显结构变化,包括α-螺旋和β-片含量和光强度的变化.
- 这些结构修改影响了氨基酸分数,表面水性和自由硫含量.
结论:
- 11.0的提取pH值是达到高大豆油体 (SOB) 乳液稳定性的最佳条件.
- 提取pH极大地影响SOB表面蛋白质的结构性质.
- 在表面蛋白质中观察到的结构变化与改善的乳液稳定性相关.
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