Qiu Yue, He Xinglan, Zheng Wenbo, Cheng Zhi, Zhang Jianyou, Ding Yuting, Lyu Fei
College of Food Science and Technology, Zhejiang University of Technology, Deqing 313216, China; Zhejiang Key Laboratory of Green, Low-Carbon and Efficient Development of Marine Fishery Resources, Hangzhou 310014, China; National R&D Branch Center for Pelagic Aquatic Products Processing (Hangzhou), Hangzhou 310014, China.
School of Automation and Electrical Engineering, Linyi University, Linyi 276000, China.
Food Chem. 2025 Apr 15;471:142717. doi: 10.1016/j.foodchem.2024.142717. Epub 2025 Jan 1.
Odor-induced saltiness enhancement (OISE) is thought to be a unique salt reduction technique which capitalizes on olfactory-gustatory interaction. Volatile compounds of stewed duck obtained from orthonasal (no-treatment) and retronasal (saliva-treatment) pathways and their capacity on OISE were analyzed by GC-O-MS and molecular simulation in order to ascertain the role of odors in duck stewed with chili pepper on saltiness enhancement. Totally 17 unique volatile compounds were identified in retronasal pathways. Eight salty-congruent volatile compounds were screened from the stewed duck, one of which being E-2-decenal, specific to retronasal volatile compounds following oral enzymatic digestion. These volatile compounds' OISE in NaCl solution was confirmed, and the retronasal pathway effect outweighed the orthonasal one. Molecular docking revealed that volatile compounds interacted with saltiness receptors through hydrogen bonding and hydrophobic force, which may be responsible for its enhanced saltiness. These findings suggest that olfactory pathways and specific odors might simultaneously mediate OISE.
气味诱导的咸味增强（OISE）被认为是一种独特的减盐技术，它利用了嗅觉与味觉的相互作用。通过气相色谱 - 嗅觉 - 质谱联用（GC - O - MS）和分子模拟分析了从口腔前部（未处理）和口腔后部（唾液处理）途径获得的炖鸭挥发性化合物及其对OISE的影响，以确定气味在辣椒炖鸭中咸味增强方面的作用。在口腔后部途径中总共鉴定出17种独特的挥发性化合物。从炖鸭中筛选出8种与咸味相符的挥发性化合物，其中一种是E - 2 - 癸烯醛，它是口腔酶消化后口腔后部挥发性化合物所特有的。证实了这些挥发性化合物在NaCl溶液中的OISE，并且口腔后部途径的效果超过了口腔前部途径。分子对接显示挥发性化合物通过氢键和疏水作用力与咸味受体相互作用，这可能是其咸味增强的原因。这些发现表明嗅觉途径和特定气味可能同时介导OISE。
