рибо核酸差异调节口服谷氨酸检测值
Nicholas J Amado1, Emily C Hanselman1, Caroline P Harmon1
1Department of Nutritional Sciences, Rutgers University, 65 Dudley Rd, New Brunswick, NJ 08901, United States.
Chemical senses
|January 10, 2024
概括
纯氨酸如氨酸5'-单酸 (IMP) 通过降低谷氨酸的检测值来增强乌玛米味道的敏感性. 然而,皮里米丁的效果各不相同,有些人会减轻味道. 这突出了核糖核酸作为关键的味道调节器.
科学领域:
- 感官科学 感官科学
- 食品化学 食品化学
- 神经科学是一个神经科学.
背景情况:
- 乌玛米味,主要归因于谷氨酸,是人类基本的感官体验.
- 已知谷氨酸和某些核糖核酸之间发生协同增强味道,特别是像IMP和GMP这样的纯素.
- 了解这些相互作用对于食品科学和风味调制至关重要.
研究的目的:
- 调查一种假设,即纯能和胺基核酸调节l-酸盐 (MPG) 的味道检测值.
- 量化特定核糖核酸对谷氨酸味道敏感性的影响.
- 为了确定这些调制效应的排名顺序.
主要方法:
- 测量仅MPG的绝对检测值.
- 测量MPG检测值在存在的背景水平 (3mM) 的五种不同的5'-核核酸 (IMP,GMP,AMP,UMP,CMP).
- 统计分析以确定检测值观察到的变化的重要性.
主要成果:
- 添加纯素 (IMP,GMP,AMP) 在所有参与者中显著降低了MPG检测值 (P < 0.001).
- IMP证明了最强大的增强,将MPG值降低了大约1.5个数量级 (从2.08mM到0.046mM).
- 胺基核酸 (UMP,CMP) 显示出可变的效果;CMP在大多数受试者中增加了值,作为负调节器.
结论:
- рибо核酸作为谷氨酸味道感知的显著调节剂.
- purin (IMP,GMP,AMP) 增强对谷氨酸的敏感性,而pyrimidine (UMP,CMP) 可以减少或具有可变的效果.
- 在昆虫和发酵产品等富含营养的食物中,谷氨酸和纯氨酸的同时存在具有进化意义.
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