Concentration of fruit juice aroma compound from model multicomponent solution and natural apple juice hydrolate: Optimization and modeling by design of experiment

摘要

This study presents aroma compounds separation from a model multicomponent solution as well as natural apple juice hydrolate by pervaporation (PV). Response surface methodology (RSM) was used to determine the influence of the operating parameters on membrane separation performance. The experiments were planned in accordance with the Box-Behnken design for such three input variables as temperature, feed flow rate, and the concentration of aroma compounds in the feed. For the enrichment factor as the system response, the optimal values of independent variables amounted to respectively T=60 degrees C, Q=1.30 dm(3)/min, and C=0.5 wt %. For these conditions, the enrichment factor was predicted to be 87.56. In the last step, PV of apple juice hydrolate was performed under optimal conditions as determined through RSM for a multicomponent system. Optimal conditions determined by RSM for the model solution allowed for getting satisfactory effectiveness of PV of real fruit juice hydrolate.