ABSTRACT

Anthocyanins have a high potential in the food sector not only due to their coloring properties but also due to their high antioxidant activity. Their structural diversity, susceptibility to heat, pH, and copigmentation complicate its extraction and purification. The use of high hydrostatic pressure (HHP) assisted extraction has proven to be a good alternative to conventional techniques as it combines elevated pressure (100–800 MPa), moderate temperatures (30–60°C), and short processing times (3–10 min). The HHP process is based on the Pascal and Le Chatelier’s principles which state that pressure is uniformly transmitted and distributed in all directions. HHP allows the enhancement of mass transfer rates by increasing cell permeability and increasing the diffusion of secondary metabolite, which leading to higher extraction yields, fewer impurities on the final extract and the possibility of extractions at room temperature with preservation of thermo-sensitive structures.

This review examines the basic principles of the HHP technology, including its mechanisms, analytical procedure and its effects on plant materials as well as a discussion on the most important parameters that affect the performance of this technology, its advantages, and disadvantages. Lastly, the applications of HHP for the recovery of phenolic compounds, with emphasis on anthocyanins, are discussed.

抽象的

花色苷在食品领域具有很高的潜力，这不仅是由于它们的着色特性，而且还因为它们的高抗氧化活性。它们的结构多样性，对热的敏感性，pH值和色素沉着使它的提取和纯化变得复杂。实践证明，使用高静水压（HHP）辅助萃取是常规技术的良好替代方法，因为它结合了高压（100–800 MPa），中等温度（30–60°C）和较短的处理时间（3– 10分钟）。HHP过程基于Pascal和Le Chatelier的原理，该原理指出压力在所有方向上均等地传输和分布。HHP可通过增加细胞渗透性和增加次生代谢物的扩散来提高传质速率，从而提高提取率，

这篇综述检查了HHP技术的基本原理，包括其机理，分析程序及其对植物材料的影响，并讨论了影响该技术性能，优缺点的最重要参数。最后，讨论了HHP在酚类化合物回收中的应用，重点是花青素。