[Objective] The paper aimed to study the optimum extraction technology of pigments from petals of Matthiola incana(L.)R.Br.of different colors.[Method] Petal pigments of Aida variety(white violet),Francesco variety(red violet) and Arabella variety(purple violet) were analyzed by colorimetric reaction method and ultraviolet-visible spectrum method,and the optimum extraction technology of flavonoid compounds from petals of them was determined by single factor experiment and orthogonal experiment.[Result] The optimum extraction conditions of white violet were as follows:with 95% ethanol+5% HCl as solvent,solid-liquid ratio(1:40),extraction time(3 h),extraction temperature(65 ℃).The optimum extraction conditions of red violet and purple violet were as follows:with acetone as solvent,solid-liquid ratio(1:40),extraction time(3 h),extraction temperature(55 ℃).[Conclusion] The study provided theoretical foundation for further development and exploitation of pigments from M.incana(L.)R.Br.
展开▼
