The effect is based on the ingredients, which change or whose properties are concentrated during the drying process:
1. Tannins: This is the main reason for their effect. Dried blueberries contain a high concentration of tannins, especially so-called catechin tannins and proanthocyanidins.
o Astringent effect: Tannins have an "astringent" (contracting) property. They bind with proteins in the mucous membranes of the intestine, creating a protective layer. This layer seals the intestinal lining and makes it difficult for bacteria, viruses, and their toxins to penetrate the body. 🛡️
o Anti-inflammatory and antibacterial effect: Tannins also have anti-inflammatory properties and inhibit the growth of certain bacteria, which can combat the cause of diarrhea. 🦠
o Reduced bowel movement: The astringent effect calms intestinal peristalsis (the muscular movements that move chyme through the digestive tract), which helps to solidify the stool. 💪
2. Pectins: Dried blueberries are rich in pectins, soluble dietary fibers that have a mucilage-forming property.
o Fluid binding: Pectins swell in the intestine and can bind a large amount of water. This also helps to thicken and solidify liquid stool. 💧➡️💩
It is important to emphasize that fresh blueberries, in contrast, can have a mild laxative effect. This is due to the fruit acids and higher water content they contain, which stimulate bowel activity. 🍇💦
For an optimal anti-diarrhea effect, dried blueberries are usually prepared as a tea decoction, as boiling releases the tannins most effectively: ☕
• Boil 1–2 tablespoons of dried blueberries in water for about 10 minutes. ⏱️
• Then strain the berries and drink the tea in small sips throughout the day. 🥤
• Alternatively, the dried berries can also be chewed.
