Manifesto – Taste Earth

How Do We Taste the World? A Breakdown of Flavor Perception

Thalia Papadopoulou — Sun, 16 Jun 2024 13:03:41 +0000

Have you ever tried to define the concept of taste? Or perhaps it's so obvious to you that you don't think it needs a definition?

My experience has shown me that everyone’s perception of taste is highly personal. And by this I mean that I’ve noticed: the way each person perceives the meaning of this sense depends on their personal viewpoint.

Some define taste as a function that contributes to human survival, others as the human perception of nutrients and the reaction to them, while in ancient times it was defined as a way to enjoy, savor, or appreciate!

My perspective?

Taste is the sensation created as a result of an experience, "The Sensory Experience"!

In fact, taste can encompass all of these definitions. Taste has been an integral part of the human experience for millions of years. It has contributed to human evolution, survival, and the pursuit of pleasure. It is the only sense unaffected by age and has been scientifically proven to be the strongest, most durable, and well-protected sensory system in the human body.

On a broader level, taste can be categorized as a bundle of various sensations: it is not just the properties of taste that we perceive through the tongue. Equally important parameters for how we perceive our meal are its smell, texture, and even temperature. Moreover, the various aspects and intensities contained in the taste component can also be perceived retro-nasally.

In other words, we could say that taste is a sense that, during its function, simultaneously utilizes the other senses. Thus, it ends up being a holistic experience.

#Eimaste_oti_trome

Food shapes our physical and mental well-being, influencing how we function, think, and perceive the world around us.

Thalia

What is Taste and How Does it Work?

Our sense of taste, along with smell and texture, work together to create the perception of flavor. This complex interplay allows us to distinguish between familiar and novel foods.

Taste buds are located on our tongue and detect basic tastes such as sweet, salty, sour, bitter, and umami.

During the chewing process, taste molecules are released and then dissolve in saliva, interacting with taste receptors.

Smell also plays a significant role in the perception of taste. Aromatic molecules travel from the back of our mouth to the olfactory receptors in our nose, influencing the overall taste experience

Texture, detected by touch receptors in our mouth, adds another dimension to the perception of taste and can enhance or diminish the perceived intensity of flavors.

So now, how do Humans Perceive Taste?

Humans generally recognize and detect certain nutrients in their food and tend to categorize them into taste groups:

Simple carbohydrates are perceived as sweet taste

Amino acids glutamate, aspartate and specific ribonucleic acids are experienced as umami or savory taste

Sodium salts are re-voiced as salty taste

Acids are experienced as sour taste

Many toxic compounds are perceived as a bitter taste *

* While bitterness is often associated with toxins, the variety of compounds that can trigger this taste sensation is remarkably vast. Therefore, not all bitter compounds pose a health risk.

So, the next time you savor a delicious meal, take a moment to appreciate the complex interplay of senses that make up the experience of taste!

The Science of Food Aromas: How Do Flavors Develop?

Thalia Papadopoulou — Sat, 21 Sep 2024 21:22:26 +0000

3 minutes Read Time

Ever wondered why olive oil can smell like a green banana, wine can have hints of herbs or biscuits, and coffee can leave a fruity and spicy aftertaste?

Taste experiences are often filled with surprises. One of the most fascinating aspects is discovering unexpected flavors in pure, unadulterated products.

For instance, how can olive oil possibly smell like a tomato or a green banana? Could the tomatoes grown in the same field have influenced the oil’s flavor profile?

Another common question I get during olive oil tastings is, “How is it possible that some olive oils have flavors of almond and walnut? Is there actually a walnut inside the olive oil?”

The answer, as you sensed, is ΝΟ, there's no walnut, banana, or any of the flavors we detect in olive oil. The secret, as always, lies in chemistry!

So now, how come these flavors develop in foods?

To better understand the flavors we encounter in olive oil and wine tastings, let's first look at how flavors develop in foods in general.

Let’s start with the basics!

The flavor of food comes from the interaction of compounds responsible for taste and those responsible for smell, known as aromatic compounds.

Compounds responsible for taste are primarily non-volatile (meaning they don’t evaporate), while compounds responsible for smell, or aromatic compounds, are volatile (meaning they can evaporate) and can therefore be perceived through the olfactory receptors in our nose.

Now, in foods, while the quantity of volatile compounds may be quite small, ranging from 10-15 mg/kg, there is a wide variety of these compounds. For example, in a food, especially a fermented product, up to 800 different volatile compounds can be found, even if they are present in small amounts.

So, might you be wondering, does this mean we can identify up to 800 different aromas in a single food?

The answer, of course, is NO! Not all volatile compounds are necessarily aromatic, meaning they don’t all contribute to the final aroma of the food.

Specifically, aromatic compounds are volatile substances with a specific chemical structure that are present in foods at concentrations above the odor recognition threshold.

The recognition threshold is the lowest concentration of a compound that is sufficient for the recognition of its odor.

Therefore, the recognition threshold determines whether a substance is classified as aromatic, and based on this threshold, the aromatic value of that compound within the food is calculated.

When the aromatic value of a compound is at a high rate, the aroma of that specific compound is one of the dominant aromas of the food, and in this way, it can be identified in taste tests. The dominant aromatic compounds are those that collectively provide the characteristic flavor of each food.

Let's look at an example to make this clearer. In fresh orange juice, the dominant aromatic compound that gives it its aroma is (R)-Limonene. (R)-Limonene as a compound can be found in many different foods, where, if its concentration is higher than the recognition threshold, it will provide a citrusy aroma .

For example, in olive oil, dominant aromas that we can identify are freshly cut grass, tomato, and unripe banana, but due to the aromatic compounds and not due to any additives!

This is a completely logical thought when you consider that most essential oils and the colognes we wear are chemical aromatic compounds synthesized in a laboratory, and have absolutely no contact with flowers, no matter how intense their floral scent may be.

Food aromas are a fascinating journey into the world of chemistry and the senses. Every time we taste something, it's like solving a mystery. And while we may not be able to see the molecules that create these aromas, we can certainly enjoy them!

Olive Oil : The art of Olive Oil Tasting

michalis — Tue, 11 Jun 2024 14:26:16 +0000

Olive oil, the undisputed star of Mediterranean cuisine and an integral part of Greek culture, is more than just an ingredient. It's a cultural cornerstone, a staple in every meal, and a substance deeply ingrained in our daily lives.

In Mediterranean countries, families have long cherished the tradition of harvesting olives and many of us have grown up surrounded by olive groves, learning about the process of olive oil production from our families.

In Greece, the olive harvest is more than just a seasonal event; it’s a cultural celebration. Most Greeks have personal connections to olive oil production, whether through family, friends, or their own experiences. This deep-rooted relationship is reflected in our cuisine, where olive oil is a staple ingredient. As the world’s largest per capita consumer of olive oil, consuming an average of 12 kg per person annually. This high consumption rate is a testament to the exceptional quality and taste of Greek olive oil, which has been cherished for generations

But do we really know this product that we consume so passionately? Do we understand the criteria for evaluating it, and do we realize that tasting is essential to distinguishing its qualities?

Fruity, Bitter, Pungent!

And yet, tasting olive oil is an essential part of quality control. After all, you can’t eat something without tasting it ! But tasting olive oil is not just a matter of preference; it’s also a legal requirement for classifying its quality (extra virgin, virgin, lampante).

So, what should we expect to feel when tasting an extra virgin olive oil?

The hallmark of a quality olive oil is its fruity aroma! An extra virgin olive oil will always offer a fresh, fruity intensity on the nose, reminiscent of nature’s scents. Often, this aroma is a complex bouquet, ranging from green notes (freshly cut grass, artichoke, and tomato leaves) to more ripe notes (banana, walnut, and spices).

The next desirable characteristic is its bitterness. Olive oil should ideally have only one taste, and that’s Bitter! Yes, you heard it right, we want our olive oil to be bitter! Because bitterness is due to polyphenols – oleuropein -, which are antioxidants, and as highly beneficial compounds, they increase the nutritional value of olive oil. So, the bitter, the better!

The final characteristic of a high-quality olive oil is the Pungency! A slight spicy or peppery sensation at the back of the throat. This sensation, caused by the antioxidant oleocanthal, is a sign of a truly exceptional product. Although it might cause a mild cough due to irritation of the esophagus, it’s a testament to the olive oil’s potency and its numerous health benefits.

This spicy sensation, combined with a great fruity aroma and bitter notes, creates a complex and satisfying taste experience that is unique to high-quality olive oils!