Estimation of betalain content in beetroot peel powder

Abstract

This study explores the economic benefits of utilizing beetroot peels as a source of natural color extraction, with a focus on reduction of waste. It was determined through rigorous experimentation that sun-drying at a controlled temperature of 22°C emerged as the optimal and most cost-effective method for preserving betalain content in peels. Furthermore, water was identified as the preferred solvent for extraction of betalain, exhibiting both higher yield and lower cost, compared to ethanol. The resulting beetroot powder demonstrated a stable pH range of 6.1–6.6, rendering it well suited for a diverse range of food applications. These findings emphasize the potential of beetroot peels as a valuable and sustainable source of natural colorants, with significant implications for the food and related industries.