Turmeric is a perennial herb with well-developed rhizomes, clumps, irregular oval, cylindrical or spindle-shaped, often curved, and some with short forked branches, 2 to 5 cm long and 1 to 3 cm in diameter. The surface is dark yellow, rough, with shrunken texture and obvious links, and there are round branch marks and fibrous root marks. The quality is solid, not easy to break, the cross section is brownish yellow to golden yellow, horny, with waxy luster, the inner cortex has obvious rings, and the vascular bundles are scattered in dots. The aroma is specific, bitter and acrid. Flowering in August.

Curcumin is a chemical component extracted from the rhizomes of Jianhe Biological Turmeric. Among them, it is a rare pigment with diketones in the plant kingdom and is a diketone compound. Curcumin is orange-yellow crystalline powder with a slightly bitter taste. not soluble in water. In food production, it is mainly used for the coloring of sausage products, canned food, and soy sauce products. Medical research has shown that curcumin has the functions of lowering blood lipids, anti-tumor, anti-inflammatory, choleretic, and antioxidant.