The Valorisation of Distillation By-Products for the Production of Polyphenol-Rich Formulations.

Lemon balm () is an aromatic and medicinal plant, rich in bioactive ingredients and with superior antioxidant activity. The essential oil of this plant is an expensive product, so the use of the by-products of the essential oil industry is particularly useful. The aim of this research was to process distillation by-products to develop a series of polyphenol-rich formulations.