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肉类和植物性肉类模拟汉堡的TD-NMR结构分析

Zeev Wiesman¹, Moshe Hai Azachi¹, Tatiana Oshether¹

¹Phyto-Lipid Biotech Lab (PLBL), Department of Biotechnology Engineering, Faculty of Engineering Sciences, Ben Gurion University of the Negev, Beer Sheva, Israel.

Journal of food science

|July 3, 2025

概括

时间域核磁共振 (TD-NMR) 放松计有效地通过分析它们的内部微观结构来区分植物性肉类类似物 (PBMA) 与牛肉汉堡. 这种非破坏性技术揭示了对食品产品开发至关重要的独特的结构和水结合特性.

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
生物物理学的生物物理.

背景情况:

食品产品的功能与其原子,分子和微观结构属性密切相关.
植物性肉类类似物 (PBMA) 旨在复制传统肉类的感觉和结构特性,提出了独特的材料科学挑战.
了解PBMA和真肉之间的微观结构差异对于提高PBMA质量和消费者接受度至关重要.

研究的目的:

评估时间域核磁共振 (TD-NMR) 放松计作为一种非破坏性方法,用于表征基于大豆的PBMA的内部微观结构.
为了比较PBMA的微观结构和水结合性质与安格斯牛肉汉堡.
建立TD-NMR作为肉类替代产业质量控制和产品开发的工具.

主要方法:

基于大豆的PBMA和安格斯牛肉汉堡的比较分析.
使用视觉和共聚焦显微镜进行形态分析.
测量含水量和释放的水分.
时间域核磁共振 (TD-NMR) 放松计,包括T1和T2放松测量和1D/2D T1-T2光谱指纹.

主要成果:

显微镜显示PBMA具有多孔的,类似凝的矩阵与牛肉的紧纤维结构相比.
牛肉汉堡表现出更高的持水能力,表明比PBMA更强的蛋白质与水的相互作用.
TD-NMR数据揭示了不同的质子放松行为:牛肉中的T1较长,T2较短,较窄,与密集的肌纤维蛋白相一致;PBMA中的T2分布更广泛,反映出较宽松的植物蛋白质矩阵.
一维和二维T1-T2光谱指纹清楚地区分了肉类和植物性产品的质子松概况.

结论:

TD-NMR放松计是一种快速,可靠和非破坏性的技术,用于分析食品的内部微观结构.
该研究成功地证明了TD-NMR能够区分肉类和植物性肉类替代品的复杂结构.
这些发现为优化下一代PBMA的开发,质量保证和设计提供了宝贵的见解.

关键词:

在TD-NMR放松放宽的过程中.食品质量控制食品质量控制肉类汉堡是肉类汉堡.植物性肉类类型的类似物.结构分析是结构分析.

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