The plant enrichment method is a newly developed synthetic extraction and purification technology. It uses plants with high GABA content to separate and extract, so that there is a cheap and high-purity GABA product. There are two main methods for obtaining GABA from plants: one is the purification method by solvent extraction, and the other is the preparation method by column separation.
(1) Solvent extraction method
The solvent extraction method uses water or alcohol as the extractant of GABA. According to the solubility of plants in water or alcohol and the principle of different distribution coefficients, GABA is extracted into water or alcohol, and after repeated filtration and purification, the absolute Most of the GABA is extracted. (2) Column separation preparation method
Column separation preparation method, also known as column chromatography, is a principle that uses the principle that components in different mixtures have different distribution coefficients in solid-liquid two-phase for elution separation and other subsequent operations. Its large classification should be belongs to chromatography. Chromatographic columns generally use resin, silica gel or activated carbon as packing materials.