What Is the Science of Taste Called?

Medically Reviewed on 4/8/2022
What is the science of taste called
Taste or the gustatory system refers to how brains perceive the signals sent from taste buds which bind to chemicals in the foods and drinks we consume.

The term taste or gustation (the science of taste) refers to what taste cells sense on the front and back of the tongue, as well as on the sides, back, and roof of the mouth.

  • These receptor cells, also called taste buds, bind to chemicals in the food or drink that is being consumed and convey signals to the brain.
  • Taste or the gustatory system refers to how brains perceive these sensations. Not all taste receptors detect the same substances or flavors.
  • Humans have five different types of taste buds. Each of these categories contains a distinct type of chemo-sensitive cell.

5 different types of tastes

  1. Sweet
    • Extremely pleasant and indicates the presence of carbs in food.
    • Carbohydrates act as a crucial source of energy.
  2. Salty
    • Salt in moderate amounts generally tastes pleasant.
    • Salt is an essential component of the diet because it is used throughout the body to maintain ion and water equilibrium.
  3. Sour
    • It indicates the presence of acidic substances.
    • In tiny doses, the sour flavor can be pleasant, but in larger proportions, it can be unpleasant.
    • The sour taste may indicate rotten food or acid-containing foods.
  4. Bitter
    • Generally, unappealing.
    • As a preventive measure, plants may create toxins, and a bitter taste helps detect these.
    • Caffeine and nicotine are bitter, yet a dislike to such things may be learned to like due to the numerous pleasant effects these compounds can cause in bodies.
  5. Umami
    • This flavor is produced by foods, such as cheese, beef, and soy sauce.
    • It indicates that amino acids and proteins are present in the food.

Are there other types of tastes?

Some experts believe that people are capable of sensing various other tastes.

  • A small body of research suggests that fat may be a flavor.
  • Metallic tastes are debated as to whether they are authentic tastes or the result of interactions between different metals present in saliva.

People frequently use the phrases “taste” and “flavors” interchangeably, which is not always correct. While taste refers to the five categories, it is only one component of how people perceive food. Flavor, however, is a hedonic sense that includes scent, texture, temperature, and expectation.

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10 factors that may affect the perception of taste

One may be aware of their favorite foods, but they might be shocked to learn why they crave specific tastes and what those cravings reveal about them.

  1. Starts in the womb: Before birth, the fetus has a taste sensation. Diet has an impact on a mother's amniotic fluid and breast milk. Early exposure to these flavors may lead to a preference for them later in life.
  2. Culture: Cultural heritage is the most important factor that determines the taste.
  3. Nose: The sense of smell is another factor that has a significant impact on taste. The olfactory (smell) receptors are an important aspect of taste, and women of childbearing age generally have the most sensitive sense of smell. This may get even more heightened during pregnancy.
  4. Genes:
    • When it comes to taste perception, geography and personal experience are crucial determinants, but there are certain hereditary aspects at play.
    • Some people are more sensitive to bitterness than others whereas others (such as supertasters) may have inherited more taste buds than the normal person.
  5. Food names:
    • "Rich chocolate" sounds so much better than "chocolate" because the brain is more appealing to names that excite the taste buds.
    • Most advertising firms choose known flavors and names for their products because of this mindset.
  6. Memories:
    • When a person visualizes food, they usually think of its color, texture, and fragrance. The mouth will start salivating when they envision it in more detail.
    • Gaining access to the cognitive side of taste is called memory-based expectation.
  7. Visual:
    • When it comes to the selection of items by consumers, aesthetics is unquestionably important.
    • Scientists and trade panel surveys have been helpful to determine the optimal look.
    • With chocolate, for example, darker is usually better.
    • Reducing a product's grey tinge improves its visual attractiveness.
  8. Illness and disease:
    • Illnesses, such as Alzheimer's disease and dementia, can have an impact on the sense of taste.
    • Cancer patients may experience taste alterations and loss of appetite as a result of their illness and treatments.
    • Certain vitamin deficiencies and antibiotics may affect the taste sensation.
  9. Early exposure:
    • Picky eaters are widespread, although having an allergy to particular flavors can be controlled.
    • According to the Academy of Nutrition and Dietetics, encouraging young children to consume a variety of fruits and vegetables can help shape and shift their dietary choices by the age of four years.
  10. Temperature: Researchers suggest that whether a meal or beverage is served hot, cold, or somewhere in between influences the aromatics that excite the olfactory system (the sense of smell).

Scientists have discovered that in an increasingly connected world, people are more open to diverse flavors than they were previously. However, many people favor the classics. Despite the popularity of new flavors, top-selling nutrition flavors around the world demonstrate that some classics never go out of style.

Why did I lose my sense of taste during COVID-19?

The Centers for Disease Control and Prevention lists loss of taste as a COVID-19 symptom. As the number of instances increases, more people may be impacted by the loss of taste, also called ageusia.

Though many people describe a loss of taste as a prominent symptom, a loss of smell is equally a serious issue because most perceived flavors are a combination of smell and taste.

  • It is estimated that about half of COVID-19 patients have alterations in their sense of taste and smell.
  • The majority will recover in two to three weeks, whereas many others are still working on recovery months later.
  • Researchers suggest that the data now reveals that the virus is adhering to the proteins of supporting cells that surround nerve cells and receptors that sense taste and smell. When the virus attacks those cells, the neurons stop working, leading to loss of taste and smell.
  • There is no recognized remedy for odor and taste loss. However, the body can and sometimes heal itself, at least in the long run.

Research is underway to investigate the length of time for taste and smell to return after a COVID-19 infection.

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Medically Reviewed on 4/8/2022
References
Image Source: iStock Images

Kuhn MA. Decoding the Science of Taste. Institute of Food Technologists. https://www.ift.org/news-and-publications/food-technology-magazine/issues/2016/may/features/science-of-taste

Mouritsen OG. The science of taste. Flavour. 2015; 4:18. https://flavourjournal.biomedcentral.com/articles/10.1186/s13411-014-0028-3

Erickson RP. A study of the science of taste: on the origins and influence of the core ideas. Behav Brain Sci. 2008 Feb;31(1):59-75; discussion 75-105. https://pubmed.ncbi.nlm.nih.gov/18394244/

Burges Watson DL, Campbell M, Hopkins C, Smith B, Kelly C, Deary V. Altered smell and taste: Anosmia, parosmia and the impact of long Covid-19. PLoS One. 2021 Sep 24;16(9):e0256998. https://www.medrxiv.org/content/10.1101/2020.11.26.20239152v1.full