超声波聚合应用于Durvillea Antarctica和Arthrospira platensis面粉:对热物理性质,蛋白质构造变化和微观结构的影响
Daniela Rivera-Tobar1, Mario Pérez-Won2, Erick Jara-Quijada3
1Department of Food Science and Technology, Universidad de Santiago de Chile, Av. Víctor Jara, 3769 Santiago, Chile.
Food chemistry
|October 12, 2025
概括
超声波聚合 (UA) 增强了海藻和藻类粉的机械和热性能. 这种可持续的食品加工技术提高了蛋白质的稳定性和质感,用于新型食品的开发.
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
- 生物技术是生物技术.
背景情况:
- 南极洲的Durvillaea和Arthrospira platensis的面粉是功能性食品的潜在成分.
- 了解它们的结构和热物理特性对于食品加工至关重要.
- 优化加工方法可以提高这些成分的功能.
研究的目的:
- 评估超声波聚合 (UA) 对Durvillaea antarctica和Arthrospira platensis面粉的影响.
- 优化UA条件以改善矩阵属性.
- 评估UA对蛋白质结构和热稳定性的影响.
主要方法:
- 优化超声波功率振幅,时间和周期.
- 测量弹性模量和破裂性.
- 使用差分扫描热量计来确定蛋白质变性化温度.
- 里埃变换红外光谱 (FTIR) 用于分析蛋白质的次要结构 (β-sheet和α-helix含量).
主要成果:
- 最佳的UA条件显著增加了弹性模量和破裂性.
- 蛋白质变质化温度上升至134-139°C,表明热稳定性提高.
- FTIR分析显示β-片含量减少和α-螺旋结构增加,表明蛋白质展开.
结论:
- 超声波聚合是一种有效的方法,用于修改海藻和藻类粉的热物理和结构性质.
- UA提高了面粉矩阵的机械强度和热稳定性.
- 这种技术为开发新型功能性和高价值食品提供了一种可持续的方法.
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