Curcuminoids are a group of active substances in turmeric root. Curcuminoids belong to the group of polyphenolic dyes which includes curcumin, among others. Curcumin is the primary curcuminoid in turmeric root. It is the most significant active plant substance and therefore the one that has been studied the most.
Curcumin with its characteristic orange color also belongs to the group of polyphenolic substances. In nature, these substances are formed by plants and microorganisms. An herb may produce these substances in order to protect it from being attacked by such things as pests, UV-radiation, and wounding.
Curcumin also contains herbal substances such as saponins, phytosterols, alkaloids, tannins, and starches. At the same time, some of these herbs are considered an important part of a healthy and varied diet.
Turmeric is probably best known as an essential ingredient in curry powder: It gives curry its characteristic yellowish color.
The Turmeric plant originated in India and South Asia. The plant is related to Ginger and Cardamom. It has lanceolate leaves and cream-colored flowers. It can reach a height of more than three feet (one meter). Turmeric root contains 2-5% curcumin, depending on where it has been cultivated.
