Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy.
CNR-STIIMA, Italian National Research Council, Institute of Intelligent Industrial Technologies and Systems for Advanced Manufacturing, Corso G. Pella 16, 13900 Biella, Italy.
Molecules. 2021 Nov 9;26(22):6775. doi: 10.3390/molecules26226775.
Anthocyanins are the largest group of polyphenolic pigments in the plant kingdom. These non-toxic, water-soluble compounds are responsible for the pink, red, purple, violet, and blue colors of fruits, vegetables, and flowers. Anthocyanins are widely used in the production of food, cosmetic and textile products, in the latter case to replace synthetic dyes with natural and sustainable alternatives. Here, we describe an environmentally benign method for the extraction of anthocyanins from red chicory and their characterization by HPLC-DAD and UPLC-MS. The protocol does not require hazardous solvents or chemicals and relies on a simple and scalable procedure that can be applied to red chicory waste streams for anthocyanin extraction. The extracted anthocyanins were characterized for stability over time and for their textile dyeing properties, achieving good values for washing fastness and, as expected, a pink-to-green color change that is reversible and can therefore be exploited in the fashion industry.
花色苷是植物界中最大的多酚类色素。这些无毒、水溶性的化合物使水果、蔬菜和花卉呈现出粉色、红色、紫色、紫罗兰色和蓝色。花色苷广泛应用于食品、化妆品和纺织产品的生产中，在后一种情况下，用天然的、可持续的替代品来替代合成染料。在这里，我们描述了一种从红色菊苣中提取花色苷的环境友好型方法，并通过 HPLC-DAD 和 UPLC-MS 对其进行了表征。该方法不需要危险的溶剂或化学品，而是依赖于一种简单且可扩展的程序，可以应用于红色菊苣的废物流中进行花色苷提取。提取的花色苷在稳定性方面和纺织品染色性能方面进行了表征，达到了良好的耐洗牢度值，并且如预期的那样，颜色从粉色到绿色的变化是可逆的，因此可以在时尚界得到应用。
