酶特异性的结构变化调节了水解米蛋白的界面特性和乳液稳定性
Ju Yeon Ha1, Mi-Jung Choi2, Yeon-Ji Jo1
1Department of Marine Bio Food Science, Gangneung-Wonju National University, Gangneung 25457, Republic of Korea.
Food chemistry
|February 15, 2026
概括
由不同的蛋白酶产生的水解蛋白 (RPHs) 在结构和功能上有所不同. 酶选择和高压均质化显著影响乳液特性和稳定性.
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
- 体科学 体科学 体科学
背景情况:
- 米蛋白水解剂 (RPH) 是从米蛋白中提取的功能成分.
- 了解酶解水解对RPH特性的影响对于食品应用至关重要.
- 蛋白酶特异性会影响型和随后的功能特征.
研究的目的:
- 系统地比较由四种不同的蛋白酶产生的RPH的结构和功能性质.
- 为了研究蛋白酶类型和油分对乳液特性的影响.
- 评估高压均质化 (HPH) 在提炼乳液特性中的作用.
主要方法:
- 使用Alcalase,Flavourzyme,Neutrase和Protamex制备RPHs. 这种药物可以用于制备RPH.
- 形状的表征,溶解性和疏水性.
- 用不同的油分数 (30-70%) 制备乳液,并用RPHs稳定.
- 使用HPH分析乳液滴粒大小,分布,风质和体稳定性的分析.
主要成果:
- 和Protamex产生了具有增强溶解度和降低界面张力的.
- 芳香酶产生了疏水性和自由氨基酸,限制了溶解度.
- 乳液性质受到蛋白酶类型和油含量的显著影响.
- 在70%的油中,Flavourzyme和Protamex稳定了乳液,Flavourzyme的粘度更高.
- HPH降低了滴滴大小和提高了稳定性;Flavourzyme和Neutrase形成了稳定的纳米乳液.
结论:
- 蛋白酶特异性是RPH结构和功能性质的关键决定因素.
- 蛋白酶选择和同质化条件之间的协同效应决定了乳液性能.
- 定制RPH生产和加工可以控制乳液稳定性和特性.
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