Why the colour of Turmeric is changedto pink or red by reaction with concentrated Sulphuric Acid?

The color change of turmeric to pink or red when it reacts with concentrated sulfuric acid is due to the formation of a complex between curcumin, the active compound in turmeric, and the acid. Sulfuric acid dehydrates curcumin, leading to structural changes that produce colored aromatic compounds. This reaction highlights the sensitivity of curcumin to pH changes and chemical environments, resulting in a vivid color transformation.