Study on Extraction Technology of Flavonoids in Loquat Flowers

To extract flavonoids in loquat flowers preferably,firstly the single factors which affected the extraction of flavonoids in loquat flowers including solvent,temperature,time and solid/liquid ratio were investigated respectively. Then the orthogonal test of temperature,solid/liquid ratio and time was carried on thereafter,by which the best extraction pa-rameters were obtained,i.e. extracting in water at temperature 100℃,solid/liquid ratio 1:30 and extracting time 3 h. Under this condition the extract rate resulted in 16.01%,which meant 160.1 mg total flavonoids per gram of dry loquat flowers.