通过除化和pH转移修改的大豆蛋白分离物增强的黄封装:使用新型蛋白质-胺酶的机制见解
Yuelong Xu1, Yu Zhang1, Jingcheng Ma1
1Laboratory of Food Industrial Enzyme Technology, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, PR China.
Food chemistry
|December 12, 2025
概括
酶去化精确修改大豆蛋白分离物 (SPI) 以提高黄素封装和输送. 这种方法显著提高了黄素的生物可访问性,黄素是功能性食品中宝贵的化合物.
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:
- 豆蛋白分离物 (SPI) 是一种具有功能性质的有价值的食品成分.
- 黄素是一种具有潜在健康益处但生物可用性差的生物活性化合物.
- 修改SPI可以提高其功能并增强生物活性化合物的输送.
研究的目的:
- 阐明在酶改性SPI中黄素封装的机制.
- 为了比较一种新的谷氨酸酶 (CS-PG) 与一种商业的谷氨酸酶 (CP-PG),用于SPI修改.
- 调查酶去化和pH转移对SPI-库尔库明复合物形成和生物可访问性的联合影响.
主要方法:
- 使用新型CS-PG和商业CP-PG进行SPI的酶去化.
- 改变pH值的处理以诱导蛋白质的展开和重新折叠.
- 在修改后的SPI矩阵内封装黄素.
- 对SPI功能 (可溶性,乳化,泡) 的分析.
- 确定封装效率和黄素的生物可访问性.
主要成果:
- 在热稳定性和特异性方面,CS-PG表现优于CP-PG.
- 控制的除增强了SPI的功能与最小的水解,诱导明显的形状变化 (疏水性与疏水性).
- CS-PG-SPI通过疏水相互作用实现了更高的封装效率 (92.97%),而CP-PG-SPI通过表面稳定提高了85.00%.
- 使用CS-PG/CP-PG和pH转移的双重修饰显著增加了黄素的生物可访问性 (1034-1058%).
结论:
- 酶去化是一种精确的工具,用于定制SPI自组装和改善生物活性化合物输送.
- 这项研究展示了一种创新的方法,用于创建稳定,高度生物可用的黄素-SPI复合物.
- 这项技术有望开发具有增强营养和健康益处的高级功能性食品.
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