Concentrated in the skins of red grapes are the anthocyanins, the primary colorants responsible for the fruits' reddish-purple color. These colorants are recognized for their significant antioxidant properties and potent nutraceutical and pharmaceutical ingredients. Nevertheless, their widespread use is compromised by the (i) need for more efficient yet sustainable downstream processes for their recovery and (ii) by the challenges imposed by their poor stability. In this work, these drawbacks were overcome by applying eutectic solvents and stabilizing agents. Besides, the anthocyanins were successfully loaded into a solid host material (approved in both food and pharmaceutical sectors) based on silicon dioxide (SiO₂, loading capacity: 1_extract:7_silica m/m). Summing up, with the process developed, the extraction yield (21 mg_anthocyanins.g_biomass⁻¹) and the stability (under 55, 75, and 95 °C) of the recovered anthocyanins were over three times better than with the conventional process. Finally, the raw materials and solvents were recycled, allowing an economical and environmentally friendly downstream process.

集中在红葡萄皮中的是花青素，这是造成果实呈红紫色的主要着色剂。这些着色剂以其显着的抗氧化特性和有效的营养食品和药物成分而闻名。然而，它们的广泛使用受到以下因素的影响：(i) 需要更高效且可持续的下游工艺来回收它们，以及 (ii) 稳定性差带来的挑战。在这项工作中，通过使用低共熔溶剂和稳定剂克服了这些缺点。此外，花青素被成功地加载到基于二氧化硅（SiO ₂，​​负载量：1_提取物：7_{二氧化硅）的固体宿主材料（在食品和制药领域均获得批准）中}毫米）。总而言之，随着工艺的发展，回收的花青素的提取率（21 mg_花青素.g_生物量^-1）和稳定性（在 55、75 和 95 °C 下）比传统工艺高出三倍以上。最后，原材料和溶剂被回收利用，从而实现经济且环保的下游工艺。