👉 Catechins, also known as epicatechins, are a group of compounds found in tea leaves. They are a type of polyphenol and play an important role in tea production. Catechins can be divided into two main groups: epicatechins (also known as flavonoids) and anthocyanins. Epicatechins have been shown to have antioxidant properties, while anthocyanins have anti-inflammatory effects.