Özet:

In this study, bioactive compounds (phenolics) from carob pod were extracted by using microwave assisted extraction method. Spray drying technique was performed for the conversion of the resulting extract into powder form. Microwave assisted extraction and spray drying steps were optimized using response surface methodology. In the extraction stage, the effect of solvent temperature and extraction time on the total phenolic content was evaluated. Optimum extraction conditions (total phenolic content: 84.48 mg GAE/g) were determined as 55 °C and 26 min. For the final powder production, the maximum process yield (48.00%) was obtained at the point where the spray dryer inlet temperature was 184 °C and the flow rate was 8 mL/min. The presence of phenolic structures in final product was verified by FTIR spectroscopy. Total phenolic content (15.37 mg GAE/g) and antioxidative behavior (DPPH: 0.63 mmol TE/g, ABTS: 0.30 mmol TE/g, FRAP: 0.06 mmol TE/g, CUPRAC: 0.05 mmol TE)/g) of carob powders were evaluated.