What tea is best for health?
All types of tea can be good for your health due to their richness in antioxidant substances. However, oxidation can lead to the transformation of certain oxidants named catechins into other types of less powerful antioxidants known as theaflavins and thearubigins.
Because it is not fermented, green tea is the one which not only provides the greatest quantity of protective substances, but also keeps the most powerful bioactive compounds (catechins, and especially EGCG) intact. In fact, it is tea that displays the highest ORAC index, which measures the protective capacity of a food against free radicals: 1250.
Also unfermented, white tea may have greater antioxidant capacity than green teas but due to its rarity, little scientific data is known on the topic.
What is the difference between green tea and black tea?
Unlike
green tea,
black tea undergoes oxidation and roasting, which leads to partial oxidation of its antioxidants such as catechins which are then transformed into other substances, and only represent 8% of the polyphenols present. Black tea, however, retains excellent antioxidant capacity, with an ORAC index of 1130, which makes it also extremely beneficial for health. It is also less rich in caffeine.