The study aimed to investigate the effects and properties of micro-encapsulation (Mc) of bioactive extracts from Pistacia vera hull (Pv-He) using response surface methodology (RSM) for mathematical modeling-optimization (MMO). The independent variables optimized were temperature (T:120-180 °C), extract dilution (Eks-Dl:0-4), maltodextrin/gum arabic (MDx/GA:20-80 %), and extract-to-wall blend (W-Rt:5-20 g) in spray-drying. The variables significantly influenced water activity (Wa, P < .01 for T), wettability (Wt, P < .0001 for W-Rt), hausner-ratio (Hr, P < .05 for T, P < .001 for W-Rt), efficiency (Efc%, P < .01 for W-Rt), shikimic acid (Sh-Ac, P < .0001 for Eks-Dl/W-Rt), Mc-yield (Mc-Yd), mass (MD) and bulk density (BD), and carr-index (CI). Linear models fit well for Wa, Wt, and Sh-Ac, while quadratic models were better for Hr and Efc%. Optimal conditions were T:150 °C, Eks-Dl:0, MDx/GA:20 %, and W-Rt:20 g, achieving a desirability of 0.992. Predicted values were compared with experimental and nanoencapsulated (Nc) Pv-He. Mc exhibited significantly higher bioactive properties than Nc. Total phenolic (TPC; 21.44 vs. 0.54 mgGAE/gDW), flavonoid (TFC; 16.84 vs. 0.15 mgQrc/gDW), and tannin (TCT; 23.09 vs. 0 mg/gDW) contents were determined. Mc-Sp enhanced antioxidant performance, showing superior DPPH&ABTS results. The antimicrobial activity of Mc showed good antibacterial effects, with inhibition zones ranging from 13.57 to 20.46 mm and minimum inhibitory concentrations from 14.55 to 485 μg/mL, comparable to antibiotics. SEM revealed regular, micron-sized microspherical structures with smooth, unsplit walls, indicating strong coating material performance. XRD showed a high proportion of amorphous materials in Nc, suggesting less ordered structures. Encapsulation effectively enriched bioactive components in Pv-He, with optimized parameters improving efficacy and performance.
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