大豆脂性蛋白:提取pH值和干燥技术对物理化学和功能性质的影响
Hanyu Song1, Jiahui Liang1, Yuxuan Li1
1College of Food Science, Northeast Agricultural University, Harbin, 150030, China.
International journal of biological macromolecules
|September 18, 2025
概括
为大豆脂性蛋白 (LP) 优化性提取pH值和干燥方法,提高其功能性质. 在pH9的喷雾干燥产生了更好的溶解性和泡,而在pH9的冷干燥提供了更好的泡稳定性.
科学领域:
- 食品科学与技术 食品科学与技术
- 蛋白质化学 蛋白质化学
- 生物材料工程 生物材料工程
背景情况:
- 豆脂蛋白 (LP) 是一种有价值的成分,具有多种食品应用.
- 了解加工参数对LP性能的影响对于其工业利用至关重要.
研究的目的:
- 研究性提取pH (8-10) 和干燥方法 (冷干燥,喷雾干燥) 对大豆LP的影响.
- 确定改善LP成分,结构和功能性质的最佳条件.
主要方法:
- 在不同的pH值下进行性提取.
- 提取的LP的冷干燥 (FD) 和喷雾干燥 (SD).
- 分析蛋白质含量,氨基酸概况,脂质保留和结构特征 (SDS-PAGE,质谱学,二次结构分析).
- 评估功能性质,包括可溶性,凝,表面张力,泡和乳化.
主要成果:
- 蛋白质产量随着pH值的增加而增加,但更高的pH值导致了共同降水.
- 喷雾干燥 (SD) LP显示了更高的必需氨基酸和脂质保留,但减少了不和脂肪酸.
- pH 9是表面疏水性和光的最佳值,SD 9表现出最低的表面张力和最高的发泡能力.
- SD样本具有较好的溶解性和凝性;FD 9提供更好的泡稳定性和水/油保持能力.
- SD 10实现了最高的乳化活性.
结论:
- 提取pH值和干燥技术显著影响大豆LP的特性.
- 在pH9的喷雾干燥适用于提高溶解度,凝和发泡能力.
- 在pH值9的冷干燥有利于泡的稳定性和水/油的容量.
- 这些发现指导了在食品生产中为量身定制的LP功能选择加工条件.
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