Abstract

This research investigated freeze-dried beetroot colourants extracted using citric acid as green organic solvent at 1-5% citric acid concentration and water as the control. The physicochemical and antioxidants activities were determined using standard methods of analysis. Mineral investigation showed that phosphorus and potassium were predominant, though with a significant decrease from 150.98 mg/100g at 0 % citric acid to 101.28 mg/100g at 5 % citric acid for phosphorous. However, the potassium content ranged from 131.78 mg/100g at 0 % to 152.76 mg/100g at 3 %, the citric acid extracted beetroot colourants had higher potassium content. Also, as the concentration of citric acid increased, there was a significant (p

Key words: Antioxidants, Freeze-dried, Colourant, Minerals, Beetroots.