ABSTRACT This study aimed to optimize the spray‐drying conditions and carrier material composition for the microencapsulation of pomegranate peel extract, a phenolic‐rich by‐product of the fruit juice industry. Maltodextrin (MD) and gum arabic (AG) ratios, along with inlet air temperature, were selected as independent variables and optimized using response surface methodology (RSM). The results demonstrated that both carrier composition and drying temperature significantly influenced process yield, phenolic retention, and antioxidant activity. The optimal conditions were determined as 36.6% MD, 63.4% AG, and an inlet temperature of 190°C, yielding a powder with 71.20% process yield, 132.80 mg GAE/g total phenolic content, 26.92 mg/g ellagic acid, and 28.23 mg TEAC/g antioxidant activity. The improved retention of bioactive compounds was attributed to the synergistic effect of MD and AG, providing enhanced matrix stability and protection during drying. These findings highlight the importance of carrier–process interactions in spray drying and demonstrate the potential for industrial production of stable, bioactive‐rich powders from pomegranate peel.
Pınarbaşı et al. (Mon,) studied this question.