Sorghum red pigment is a natural flavonoid pigment, which has strong antioxidant activity, and has the effects of thirst, anti-inflammatory and antipyretic, lowering blood sugar and blood pressure, and is widely used.

The separation and purification of sorghum red pigment by macroporous adsorbent resin is simple and convenient, the operating conditions are mild, the resin can be regenerated and reused, and the economic benefit is high.