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Related Concept Videos

Gustation01:43

Gustation

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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.
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Responses to Salt Stress02:02

Responses to Salt Stress

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Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.
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Determining the pH of Salt Solutions04:08

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The pH of a salt solution is determined by its component anions and cations. Salts that contain pH-neutral anions and the hydronium ion-producing cations form a solution with a pH less than 7. For example, in ammonium nitrate (NH4NO3) solution, NO3− ions do not react with water whereas NH4+ ions produce the hydronium ions resulting in the acidic solution. In contrast, salts that contain pH-neutral cations and the hydroxide ion-producing anions form a solution with a pH greater than 7.
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Ionic Strength: Effects on Chemical Equilibria01:19

Ionic Strength: Effects on Chemical Equilibria

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The addition of an inert ionic compound increases the solubility of a sparingly soluble salt. For example, adding potassium nitrate to a saturated solution of calcium sulfate significantly enhances the solubility of calcium sulfate. Le Châtelier's principle cannot predict this shift in the equilibrium. Instead, this could be explained in terms of changes in the effective concentration of the ions in solution in the presence of added inert salt.
In this solution, the primary...
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Taste Buds and Receptors01:20

Taste Buds and Receptors

5.6K
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,...
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The Physiology of Taste01:24

The Physiology of Taste

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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...
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Related Experiment Video

Updated: May 5, 2026

Psychophysical Tracking Method to Measure Taste Preferences in Children and Adults
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Modification of salt taste.

G K Beauchamp, M Bertino, K Engelman

    Annals of Internal Medicine
    |May 1, 1983
    PubMed
    Summary
    This summary is machine-generated.

    Human salt preference is influenced by taste and dietary habits. Reducing dietary sodium for two months or more can decrease the salt concentration perceived as most pleasant.

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    Area of Science:

    • Physiology
    • Neuroscience
    • Human Nutrition

    Background:

    • Salt appetite is a key regulator of sodium intake in humans.
    • A distinction exists between salt intake driven by sodium deficiency (need) and continued intake when sodium levels are sufficient (non-need).
    • The latter, non-need salt consumption, is highly relevant to human dietary patterns but its underlying mechanisms are poorly understood.

    Purpose of the Study:

    • To investigate the relationship between dietary sodium consumption and taste perception.
    • To explore the physiologic and experiential factors influencing salt preference in humans.

    Main Methods:

    • Observational study tracking dietary sodium intake.
    • Taste preference assessments before and after dietary modifications.

    Main Results:

    • Changes in dietary sodium consumption lead to subsequent alterations in taste perception.
    • A moderate reduction in dietary sodium intake sustained for two months or longer resulted in a decreased preferred salt concentration in foods.

    Conclusions:

    • Taste perception is adaptable and can be modified by long-term dietary sodium intake.
    • Dietary interventions aimed at reducing sodium consumption may alter taste preferences, potentially influencing overall salt intake patterns.