The fascinating world of tannins in tea

Tea is a complex and versatile beverage that is valued for its diverse flavors, aromas and health benefits. One of the most important components contributing to these properties are tannins.

These natural compounds not only influence the flavor profile of tea, but also have important health effects. At Semper Tea one of our objectives is to create new tea blends and surprise our customers with new flavours.

In this article you will learn what tannins are, how they affect tea, what benefits they have and what to look out for.

What are tannins?

Tannins are a type of polyphenol, a group of antioxidant compounds found in many plants.

They are in high concentrations in the tea plant Camellia sinensis, but also in other foods and drinks such as red wine, chocolate, nuts and some fruits.

Tannins are responsible for the astringency and bitterness of tea, i.e. the dry, slightly bitter feeling you get when drinking it.

Tannins have several important functions in the tea plant. They serve as natural protection against pests and herbivores and help to regulate plant growth.

When the tea is brewed, tannins are released and combine with other compounds that influence the final flavour of the drink.

What types of tannins are there?

Tannins can be divided into two main categories:

– Hydrolysable tannins: These tannins are less common in tea and are mainly found in other plants and trees. They are broken down in hot water, releasing gallic acid and other compounds.

– Condensed tannins: These tannins are the most common in tea. They are not easily broken down in hot water and contribute significantly to the tart flavour of the tea.

Factors that influence the tannin content of tea

The tannin content of tea can vary greatly depending on several factors:

– Tea type and processing: different types of tea (green, black, white, oolong) contain different amounts of tannins due to their different processing methods. Green tea, for example, has a higher tannin content than black tea.

– Growing conditions: The altitude, climate, and soil on which the tea plant is grown can also influence the tannin content.

– Preparation method: The water temperature and infusion time influence the number of tannins released when the tea is brewed. A longer infusion at higher temperatures generally results in a more bitter tea, as more tannins are released.

Health benefits of tannins

Tannins offer several potential health benefits, mainly due to their antioxidant properties:

– Free radical protection: tannins can help neutralise harmful molecules in the body, which can reduce cell damage and the risk of chronic diseases such as cancer and cardiovascular problems.

– Heart health: Some studies suggest that tannins may improve heart health by lowering blood pressure and levels of “bad” cholesterol (LDL).

– Fighting infections: Tannins have properties that may help fight infections and improve oral health by inhibiting the growth of bacteria that cause tooth decay and gum disease.

– Digestion: Tannins can have an astringent effect on the digestive tract, helping to reduce inflammation and diarrhea.

Tannins: A world of benefits with manageable effort

Tannins are wonderful compounds, found in our beloved tea and known for their many health benefits.

However, as with any active ingredient, it is important to savor them with knowledge to make the most of their benefits.

Optimizing nutrient absorption: Although tannins can influence the absorption of iron and other minerals, this interaction is easily managed with a balanced diet and moderate consumption. It is an opportunity to be aware of our dietary choices and enjoy a cup of tea as part of a varied and nutritious diet.

Stomach well-being: Tannins can have an astringent effect, which is beneficial in many situations. For people with sensitive stomachs, it is recommended to combine the tea with a meal or snack for a more pleasant experience.

At Semper Tea, we like to stay informed and evolve to bring you the best tea experiences. To summaries, tannins are a gift from nature that, when consumed in an informed and balanced way, can be part of a healthy  lifestyle.