相关实验视频
Updated: Jun 11, 2025

10:59
New Methods to Study Gustatory Coding
Published on: June 29, 2017
9.3K
应用多种动态感官技术对N-劳洛伊尔氨基酸:揭示增味特性与化学结构之间的关系
Lei Cai1, Jieshee Hong1, Chun Cui1
1School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China.
Food chemistry
|October 2, 2024
概括
N-劳氨基酸 (N-Lau-AAs) 增强了乌玛米的味道,并掩盖了食物中的苦味. 它们的化学结构与感官效应相关,在食品工业中具有作为新型口味增强剂的潜力.
科学领域:
- 食品科学 食品科学 食品科学
- 感官科学 感官科学
- 有机化学 有机化学
背景情况:
- N-劳洛氨基酸 (N-Lau-AAs) 是氨基酸的衍生物,在调节味道方面具有潜在的应用.
- 了解这些化合物的结构-活性关系对于它们作为增味剂的应用至关重要.
研究的目的:
- 为了研究特定的N-Lau-AAs的增味作用:N-lauroyl-phenylalanine (LP),N-lauroyl-tryptophan (LTR) 和N-lauroyl-tyrosine (LTY).为了研究特定的N-Lau-AAs的增味作用:N-lauroyl-phenylalanine (LP),N-lauroyl-tryptophan (LTR) 和N-lauroyl-tyrosine (LTY).为了研究特定的N-Lau-AAs的增味作用:N-lauroyl-phenylalanine (LP),N-lauroyl-tryptophan (LTR),以及N-lauroyl-tyrosine (LTY).
- 为了将N-Lau-AAs的化学结构与它们观察到的感觉特性相关联.
主要方法:
- 使用时间强度 (TI),感觉时间主导 (TDS) 和时间检查所有适用的 (TCATA) 方法进行感官分析.
- 结构分析以确定影响味觉的关键化学特征.
主要成果:
- 所有测试的N-Lau-AAs在模拟的肉中显著增加了umami强度和持续时间.
- 这些化合物有效地掩盖了苦味,而LTR显示出最强的效果.
- LP增强了盐度,而LTR和LTY则减少了盐度.
- 碳-碳双键与乌玛米正相关,与苦味/盐味负相关.
- 基基组与乌玛米负相关,与减少苦味正相关.
结论:
- 作为味道增强剂,N-Lau-AAs具有显著的潜力,特别是在乌玛米和苦味方面.
- N-Lau-AAs的化学结构是它们对感官影响的关键决定因素.
- 这些发现为食品行业开发新的味道调节成分提供了宝贵的见解.
相关概念视频
The Physiology of Taste
3.8K
The perception of a salty flavor is facilitated by sodium ions within the oral salivary fluid. Upon consumption of a salty substance, salt crystals disassemble, leading to the liberation of its constituents—Na+ and Cl- ions. These ions subsequently dissolve into the salivary fluid present in the oral cavity. The external environment of the gustatory cells experiences an elevation in Na+ concentration, thereby establishing a potent concentration gradient. This gradient propels the...
3.8K
Gustation
47.7K
Gustation is a chemical sense that, along with olfaction (smell), contributes to our perception of taste. It starts with the activation of receptors by chemical compounds (tastants) dissolved in the saliva. The saliva and filiform papillae on the tongue distribute the tastants and increase their exposure to the taste receptors.
47.7K
Taste Buds and Receptors
1.9K
Gustation, or the sense of taste, is intrinsically linked to the anatomical structures located on the tongue. This organ's surface, along with the entirety of the oral cavity, is adorned with stratified squamous epithelium. Evident on the tongue are elevated structures known as papillae (singular = papilla), which house the mechanisms for the transduction of gustatory stimuli. Four distinct types of papillae exist, each identified by their unique morphological attributes: the circumvallate,...
1.9K
Local Anesthetics: Chemistry and Structure-Activity Relationship
4.3K
Local anesthetics (LAs) are drugs that induce a temporary loss of sensation in a limited body area, preventing pain. Cocaine was the first local anesthetic discovered in the late 19th century. Cocaine is a benzoic acid ester obtained from the leaves of coca shrubs and was often used for its psychotropic effects. Cocaine was first isolated in 1860 by Albert Niemann. Sigmund Freud studied the physiological actions of cocaine. Carl Koller later introduced it into clinical practice in 1884 as a...
4.3K
NMR Spectroscopy Of Amines
8.5K
In proton NMR spectroscopy, primary amines and secondary amines showcase their N–H protons as a broad signal in the chemical shift range between δ 0.5 and 5 ppm. The exact position in this range depends on several factors, including sample concentration, hydrogen bonding, and the type of solvent used. Since amine protons undergo fast proton exchange in solution, the protons are labile and therefore do not participate in any splitting with adjacent protons. Thus, the observed peak is...
8.5K
Adrenergic Agonists: Chemistry and Structure-Activity Relationship
2.6K
Adrenergic agonists' structure-activity relationship (SAR) determines their selectivity and efficacy. These agonists comprise a phenylethylamine moiety with an aromatic ring and an ethylamine side chain.
Aromatic ring substitutions: Substituting the aromatic ring with –OH groups at positions 3 and 4 yields catecholamines (e.g., epinephrine), which have a high affinity for adrenoceptors. Hydrogen bonding between –OH groups and receptors enhances adrenergic activity.
Separation of...
Aromatic ring substitutions: Substituting the aromatic ring with –OH groups at positions 3 and 4 yields catecholamines (e.g., epinephrine), which have a high affinity for adrenoceptors. Hydrogen bonding between –OH groups and receptors enhances adrenergic activity.
Separation of...
2.6K

