Abstract Lycopene microparticles were prepared by complex coacervation and freeze-drying using a wall system consisting of whey protein isolate and acacia gum. Tomato peels were used as raw material for ultrasound-assisted extraction, yielding an extract with 72% lycopene. The encapsulation efficiency for lycopene was 83.6 ± 0.20%. A possible double microencapsulation, mediated by whey proteins, with rounded outer surface coacervates including small particles of sizes ranging from 378.8 nm to 3.56 μm was highlighted. The powder displayed 27.34 ± 0.18 mg lycopene/g dry weight (DW), and an antioxidant activity of 2.15 ± 0.02 mMol Trolox/g DW. A retention of 63% in lycopene was found after storage at 4 °C in the dark for 14 days. An inhibitory effect against α-amylase of 79.89 ± 1.74% was identified. The powder was used for functionalization in dressing samples, showing an increased antioxidant activity. The rheological tests indicated that dressing samples showed typical solid-like behavior, with no crossover points between the dynamic moduli.

中文翻译：

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通过复合凝聚和冷冻干燥从番茄皮中微胶囊化番茄红素：植物化学特征、稳定性和食品应用的证据

摘要 采用由乳清蛋白分离物和阿拉伯胶组成的壁系统，通过复合凝聚和冷冻干燥制备番茄红素微粒。以番茄皮为原料进行超声辅助提取，得到的提取物含有 72% 的番茄红素。番茄红素的包封率为 83.6 ± 0.20%。突出显示了一种可能的双微囊化，由乳清蛋白介导，具有圆形外表面凝聚层，包括大小范围为 378.8 nm 至 3.56 μm 的小颗粒。该粉末的番茄红素含量为 27.34 ± 0.18 mg/g 干重 (DW)，抗氧化活性为 2.15 ± 0.02 mMol Trolox/g DW。在 4 °C 下避光储存 14 天后，发现番茄红素的保留率为 63%。鉴定出对 α-淀粉酶的抑制作用为 79.89 ± 1.74%。该粉末用于敷料样品的功能化，显示出增加的抗氧化活性。流变测试表明，敷料样品表现出典型的类似固体的行为，动态模量之间没有交叉点。