昆蛋白分离物的形状,生理化学和功能性质受热处理的影响
Jiaojiao Chang1, Yong Zhao1, Jingwen Xu1
1College of Food Science and Technology, Shanghai Ocean University, Shanghai, China.
Journal of food science
|February 10, 2025
概括
热处理,如高压沸,显著提高了昆蛋白分离物 (QPI) 的功能和体外消化能力. 这些发现为改善植物性食品应用提供了宝贵的见解.
科学领域:
- 食品科学 食品科学 食品科学
- 蛋白质化学 蛋白质化学
- 生物化学 生化学
背景情况:
- 昆蛋白分离物 (QPI) 具有宝贵的营养特性,但需要修改以获得最佳的食品应用.
- 了解热处理对QPI结构和功能的影响对于其利用至关重要.
研究的目的:
- 研究大气沸 (AB),高压沸 (HPB) 和烤 (B) 对子蛋白分离物 (QPI) 的影响.
- 评估热处理后QPI中的形状,物理化学,功能和体外消化能力的变化.
主要方法:
- 昆蛋白分离物 (QPI) 经过大气沸 (AB),高压沸 (HPB) 和烤 (B).
- 分析形状变化 (二级结构,硫基),物理化学性质 (溶解性,油性),功能性质 (乳化,凝强度) 和体外可消化性.
主要成果:
- 热处理诱导了QPI的化和展开,改变了二次结构 (减少α螺旋,增加β-sheet/β-turn) 并暴露了疏水性群.
- 功能性质包括溶解性,油持容量,乳化指数,乳液稳定性和凝强度显著改善,HPB-QPI显示出最佳性能.
- 热处理提高了QPI的体外消化能力,HPB-QPI具有最高的消化能力 (88.26%) 和必需/疏水氨基酸含量.
结论:
- 热处理,特别是HPB,有效地提高了昆蛋白分离的功能性质和体外消化能力.
- 修改后的QPI表现出更好的特性,适用于植物性食品的更广泛应用,如饮料,乳化食品和制品.
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