Phenolic extracts of almond peel containing procyanidins, propelargonidins, and prodelphinidins, and method for preparation thereof

The present disclosure concerns phenolic extracts containing procyanidins, propelargonidins and prodelfinidins obtained from peel of the almond [Prunus dulcís (Mili.) D. A. Webb, Prunus amygdalus (L.) Batsch., Amygdalus dulcís (Mili.), Amygdalus communis (L.) or Prunus communis (L.)]. In particular, the objective is to obtain extracts rich in proanthocyanidins with type-A bonds. The preparation method disclosed comprises: (a) a maceration of plant material with organic solvents at 25-100° C., (b) purification by liquid-liquid extraction and/or adsorption or ion exchange chromatography, and (c) optionally, a final drying. Also disclosed are the possible activities/properties of these extracts such as anti-oxidant activity and others, which determine the use thereof as a nutritional or health ingredient, and the use thereof in the cosmetic and pharmaceutical industry.