Abstract
Spray-dried powder of black raspberry juice was optimized using response surface methodology (RSM). The juice was prepared by dispersions formulated with different coating materials including maltodextrin (MD with DE 6%, 6.59–26.41%), fenugreek gum (FG, 0.33–1.17%) and microcrystalline cellulose (MCC; 0.66–2.34%). Scanning electron microscopy and analyzing laser diffraction particle size were successfully used to relate the microstructure and dominant mechanisms on the stable dispersions to achieve the highest quality powder. Perturbation and 3D surface plots were drawn for each of the responses from the mathematical models. Second-order polynomial models with high R2 (0.972–0.989) values were constructed for each powder physicochemical properties namely yield, solubility, total anthocyanin content (TAC), and total phenolic content (TPC). The linear effect of MD concentration had a significant (p<0.05) term in all constructed models. The optimal conditions were: MD concentration of 20.0%, FG content of 0.93%, and MCC concentration of 1.74%. These optimum conditions were powder recovery of 82.72%, solubility of 82.2%, TAC of 280.76mg Cy3G/100mL and TPC of 2.0491mgGAE/gdw. A high agreement between experimental and predicted values was found.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
