Extraction of cinnamic alcohol from Rhodiola rosea using deep eutectic solvents

Abstract

The aim of this study is to assess the possibility of using deep eutectic solvents (DES) for the extraction of components of essential oils and biologically active substances from the rhizomes of Rhodiola rosea. Cinnamic alcohol was obtained obtained in aqueous, methanol, ethanol and DES extracts by maceration. Content of the alcohol in extracts was assessed. For preparation of DES, choline chloride was used as an hydrogen bonds acceptor, and malonic acid and glycerol were used as hydrogen bonds donors. Analysis was performed by gas chromatography-mass spectrometry using a GCMS-QP2010 instrument (SHIMADZU) with NIST 27.147 databases. It has been established that the mixture of choline chloride + glycerin + water extracts more than 2 times more cinnamic alcohol than ethanol, and more than 5 times more than methanol.