Clofibrate inhibits the umami-savory taste of glutamate

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Clofibrate inhibits the umami-savory taste of glutamate

In humans, umami taste can increase the palatability of foods rich in the amino acids glutamate and aspartate and the 5'-ribonucleotides IMP and GMP. Umami taste is transduced, in part, by T1R1-T1R3, a heteromeric G-protein coupled receptor. Umami perception is inhibited by sodium lactisole, which binds to the T1R3 subunit in vitro. Lactisole is structurally similar to the fibrate drugs. Clofib...

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Assessment of Umami Taste Sensitivity

Patients with gustatory disorders often complain of persistent impairment of umami taste, a synonym for savory or broth-like flavor, even after the recovery of the other four basic taste sensations (sweet, salty, sour, and bitter). Umami taste is important for maintaining not only the quality of life but also good health, and therefore, it seems important to assess and treat the impairment of u...

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The representation of umami taste in the taste cortex.

To investigate the neural encoding of glutamate (umami) taste in the primate, recordings were made from taste-responsive neurons in the cortical taste areas in macaques. Most of the neurons were in the orbitofrontal cortex (secondary) taste area. First, it was shown that there is a representation of the taste of glutamate that is separate from the representation of the other prototypical tastan...

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Functional neuroimaging of umami taste: what makes umami pleasant?

The cortical processing of umami shows what makes it pleasant and appetitive. The pleasantness of umami reflects and is correlated with processing in the secondary taste cortex in the orbitofrontal cortex and tertiary taste cortex in the anterior cingulate cortex, whereas processing in the primary (insular) taste cortex reflects physical properties such as intensity. However, glutamate presente...

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The Effect of Temperature on Umami Taste.

The effect of temperature on umami taste has not been previously studied in humans. Reported here are 3 experiments in which umami taste was measured for monopotassium glutamate (MPG) and monosodium glutamate (MSG) at solution temperatures between 10 and 37 °C. Experiment 1 showed that for subjects sensitive to MPG on the tongue tip, 1) cooling reduced umami intensity whether sampled with the t...

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ژورنال

عنوان ژورنال: PLOS ONE

سال: 2017

ISSN: 1932-6203

DOI: 10.1371/journal.pone.0172534