Curcumin . It is native to tropical and needs temperatures between 20°C and 30°C, and a considerable amount of annual rainfall to thrive (Materia Indica, 1826, Whitelaw Ainslie, M.D. M.R.A.S., via Google Books). Plants are gathered annually for their , and re-seeded from some of those rhizomes in the following season.

The rhizomes are boiled for several hours and then dried in hot ovens, after which they are ground into a deep orange-yellow powder commonly used as a in curries and other and , for dyeing, and to impart color to . Its active ingredient is and it has a distinctly earthy, slightly bitter, slightly hot flavor and a mustardy smell.

Turmeric powder is yellow brown or dark powder with specific flavoring of turmeic , which is crushed and purified from the curcuma.  It is used to make the flavoring and pigment of the food industry.

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Curcumin