[Investigations and proposals for selecting alkaloid-free plants of galega varieties by chemical mass selection].

Different reagents were tested for their usefulness in detecting galegin and peganin by chemical mass selection inGalega officinalis. It was shown that galegin in lower concentrations, like those obtained by extraction from one leaf with 3 ml liquid, could not be precipitated with any amine-and alkaloid-specific reagent. Precipitation with a solution of iodine in potassium iodide proved most suitable for demonstrating the presence of peganin; the opt mal conditions for finding peganin in extracts ofGalega leaves were explored. Ways for selecting peganin-poor plants ofGalega orientalis andGalega officinalis by the precipitation of peganin with a solution of iodine in potassium iodide are discussed.