Effects of Nasal Occlusion and Oral Contact on Perception of Metallic Taste from Metal Salts.
Effects of Nasal Occlusion and Oral Contact on Perception of Metallic Taste from Metal Salts.
复制标题
鼻塞和口腔接触对金属盐金属味感知的影响。
DOI：
10.1016/j.foodqual.2008.08.001
复制
发表时间：
2009
影响因子：
5.3
通讯作者：
Lawless,HarryT
中科院分区：
文献类型：
--
作者：
Epke,EffieM;McClure,ScottT;Lawless,HarryT
铁和铜盐具有复杂的嗅觉和味觉特性，包括一种因鼻塞而减少的金属风味成分。为了检验硫酸亚铁和硫酸铜的感官特性，一个训练有素的描述性小组在有无鼻塞的情况下，以等摩尔和等强度对这些化合物进行了评估。硫酸亚铁表现出金属味和金属回味，而硫酸铜表现出更明显的金属回味。在没有任何正鼻金属气味的情况下，鼻塞减少了金属的感觉，这意味着在鼻部打开的情况下，这种感觉是鼻后感觉到的挥发物。硫酸亚铁对鼻塞的影响较大。第二个实验通过塑料屏障将硫酸亚铁溶液与口腔接触隔离。与允许口腔接触的情况相比，强度等级降低了。这一结果与金属盐溶液，特别是硫酸亚铁溶液在口腔中产生挥发性脂肪氧化产物的假说是一致的，这些产物被追溯到被认为是金属味道。
Iron and copper salts have complex olfactory and gustatory properties including a metallic flavor component that is decreased by nasal occlusion. To examine the sensory properties of ferrous sulfate and copper sulfate, a trained descriptive panel evaluated these compounds at equal molarity and perceived equal intensity with and without nasal occlusion. Ferrous sulfate exhibited a metallic taste and metallic aftertaste and copper sulfate exhibited a more pronounced metallic aftertaste. Metallic sensations were decreased by nasal occlusion, which in the absence of any orthonasal metallic smell, implies that the sensations were retronasally perceived volatiles in the nose open condition. Ferrous sulfate showed a larger effect of nasal occlusion. A second experiment isolated ferrous sulfate solutions from oral contact via a plastic barrier. In comparison to a condition in which oral contact was allowed, intensity ratings were decreased. This result is consistent with the hypothesis that rinses with solutions of metal salts, particularly ferrous sulfate, generate volatile lipid oxidation products in the mouth that are perceived retronasally as metallic flavors.