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Curcumin ndiye curcuminoid wamkulu wa Indian spice turmeric, yemwe ndi membala wa banja la ginger (Zingiberaceae).Ma curcuminoids ena awiri a Turmeric ndi desmethoxycurcumin ndi bis-desmethoxycurcumin.Ma curcuminoids ndi ma phenols achilengedwe omwe amachititsa mtundu wachikasu wa turmeric.Curcumin ikhoza kukhalapo mumitundu ingapo ya tautomeric, kuphatikiza mawonekedwe a 1,3-diketo ndi mitundu iwiri yofanana ya enol.Mawonekedwe a enol amakhala okhazikika mwamphamvu mu gawo lolimba komanso mu solution.Curcumin angagwiritsidwe ntchito pa boron quantification mu njira ya curcumin.Imakhudzidwa ndi boric acid kuti ipange mtundu wofiira, rosocyanine.Curcumin ndi yonyezimira yachikasu ndipo ingagwiritsidwe ntchito ngati mtundu wa chakudya.Monga chowonjezera cha chakudya, E nambala yake ndi E100.