The technologies of the extraction and purification of the total flavonoids from lotus leaf were studied in this thesis.The chemical, spectral, chromatographic and mass spectrographic analysis were used to research the structure and bioactivities of flavonoids in lotus leaf. The main results were as follows:
1. Optimization for extraction process of flavonoids in lotus leavf
Effects of extraction solvent,the surfactant concentration,time, temperature and solidsolvent ratio on extraction yie...