在热处理过程中离子的存在调节了白蛋白/氨酸二元系统的性能
Yabin Guo1, Ruolan Fang2, Yiyuan Zhen2
1Group for Cereals and Oils Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, College of Food Science, Southwest University, Chongqing 400715, China.
Food research international (Ottawa, Ont.)
|April 12, 2024
概括
盐离子和热量会影响食物中的蛋白质-安托西亚尼相互作用. 离子 (Ca2+) 提高稳定性和抗氧化能力比离子 (Na+) 在大米白蛋白和黑米抗素系统.
科学领域:
- 食品科学 食品科学 食品科学
- 生物化学 生物化学
- 材料科学 材料科学 材料科学
背景情况:
- 用盐进行热处理在食品生产中很常见,特别是在蛋白质和酸盐丰富的产品中.
- 盐离子在热处理过程中调节蛋白质/安托胺相互作用中的作用仍未得到充分探索.
研究的目的:
- 研究温度和盐离子 (NaCl,CaCl2) 如何影响大米白/黑米素 (RA/BRA) 复合系统的形成和特性.
- 了解Na+和Ca2+对RA/BRA复合物的稳定性和抗氧化活性的影响.
主要方法:
- 在不同温度 (60-100°C) 和盐度 (NaCl: 10-40 mM,CaCl2: 20 mM) 下制备RA/BRA复合系统.
- 复杂化机制的分析,包括疏水相互作用和键.
- 评估DPPH的激素清除能力和系统稳定性.
主要成果:
- 由于疏水相互作用和键,RA和BRA之间的复杂化受到青,在高达90°C的温度下是最佳的.
- 过度的热量 (100°C) 可以降解黑米的安东素 (BRA).
- 盐离子 (Na+,Ca2+) 可以与RA和BRA结合,可能阻碍它们的相互作用,但增强DPPH的激素清理能力 (0.95为Na+,0.99为Ca2+在20mM).
- 与Na+相比,Ca2+对系统稳定性产生了更大的影响.
结论:
- 温度和盐离子在调节RA/BRA二进制系统的特性方面发挥着至关重要的作用.
- 这项研究突出了特定盐离子,特别是Ca2+的潜力,以改善食品应用中素-蛋白质复合物的功能属性.
- 通过适当的盐离子优化热处理条件,可以提高富含安东素的食品的稳定性和抗氧化能力.
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