Carpentieri Serena, Ferrari Giovanna, Donsì Francesco
Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Italy.
ProdAl Scarl, c/o University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Italy.
Antioxidants (Basel). 2023 Oct 13;12(10):1855. doi: 10.3390/antiox12101855.
The principles of industrial ecology have emerged as pivotal drivers of eco-innovation, aiming to realize a "zero-waste" society where waste materials are repurposed as valuable resources. In this context, High-Pressure Homogenization (HPH) presents a promising, easily scalable micronization technology, capable of enhancing the extractability and bioaccessibility of bioactive compounds found in tomato processing by-products, which are notably abundant waste streams in the Mediterranean region. This study focuses on optimizing HPH treatment parameters to intensify the recovery of bioactive compounds from tomato pomace. Additionally, it investigates the multifaceted impacts of HPH on various aspects, including color, particle size distribution, microscopic characteristics, surface properties, bioactivity, and lycopene bioaccessibility through in vitro digestion simulations. The results demonstrate that the application of HPH under optimized conditions (80 MPa, 25 °C, 10 passes) induces a remarkable 8-fold reduction in mean particle size, reduced surface tension, improved physical stability, uniform color, increased total phenolic content (+31%), antioxidant activity (+30%), dietary fiber content (+9%), and lycopene bioaccessibility during the intestinal digestion phase compared to untreated samples. These encouraging outcomes support the proposition of integrating HPH technology into an environmentally friendly industrial process for the full valorization of tomato processing residues. By utilizing water as the sole solvent, this approach aims to yield a functional ingredient characterized by greater nutritional and health-promoting values.
工业生态学原理已成为生态创新的关键驱动力，旨在实现“零浪费”社会，即将废料重新用作宝贵资源。在此背景下，高压均质化（HPH）是一种很有前景且易于扩展的微粉化技术，能够提高番茄加工副产物中生物活性化合物的提取率和生物可及性，而番茄加工副产物在地中海地区是极为丰富的废物流。本研究聚焦于优化HPH处理参数，以强化从番茄渣中回收生物活性化合物。此外，通过体外消化模拟，研究了HPH在颜色、粒度分布、微观特征、表面性质、生物活性和番茄红素生物可及性等多方面的影响。结果表明，在优化条件（80兆帕、25℃、10次循环）下应用HPH，与未处理样品相比，平均粒径显著降低8倍，表面张力降低，物理稳定性提高，颜色均匀，总酚含量增加（+31%），抗氧化活性增加（+30%），膳食纤维含量增加（+9%），且在肠道消化阶段番茄红素生物可及性提高。这些令人鼓舞的结果支持将HPH技术整合到一个环境友好型工业过程中，以实现番茄加工残渣的完全增值。通过仅使用水作为溶剂，该方法旨在生产一种具有更高营养和健康促进价值的功能性成分。
