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Curcumin longa

Turmeric (Curcuma longa) /ˈtɜrmərɪk/ is a rhizomatous herbaceous perennial plant of the ginger family, Zingiberaceae.[2] It is native in southwest India, and needs temperatures between 20 and 30°C (68 and 86°F) and a considerable amount of annual rainfall to thrive.[3] Plants are gathered annually for their rhizomes, and propagated from some of those rhizomes in the following season.

When not used fresh, the rhizomes are boiled for about 30–45 minutes and then dried in hot ovens,[4] after which they are ground into a deep-orange-yellow powder commonly used as a spice in Indian cuisine and curries, for dyeing, and to impart color to mustard condiments. One active ingredient is curcumin, which has a distinctly earthy, slightly bitter, slightly hot peppery flavor and a mustardy smell.

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