Yogurt fortification by microencapsulation of beetroot extract (Beta vulgaris L.) using maltodextrin, gum arabic, and whey protein isolate.

The effect of three different coating materials, including maltodextrin (MD, 9.95–20.05%), gum arabic (GA, 4.98–10.02%), and whey protein isolate (WPI, 4.95–15.05%), was optimized in order to produce high‐quality beetroot extract powder (BEP) using response surface modeling (RSM). Beetroot extract (BE) was encapsulated using MD, GA, and WPI by implementing a spray‐drying method. The highest total phenolic content (TPC) was obtained at 15% MD, 7.5% GA, and 10% WPI. The same results were achieved for antioxidant activity. Increasing the MD and GA contents resulted in reducing the moisture adsorption of microencapsulated BEP. [ABSTRACT FROM AUTHOR]