Abstract: Malva sylvestris L.var.mauritiana Miller is an annual and cultivated herb.It blossoms largely and the flower contains a great deal of red pigment, which is an important natural pigment resourse applicable broadly in food, pharmaceutical and cosmetic industries.Pigment of M.sylvestris L.var. mauritiana is a kind of anthocyanin which can be decomposed and decolorized easily under routine extracting technological condition.Technology of ultrasonic extraction of pigment has the advantages of short time, high efficiency and high yield without decomposition and decoloration of pigment caused by long time and high temperature conditions.Preliminary investigations on technological conditions of ultrasonic extraction were carried out to obtain the optimum technological parameter as follows:ultrasonic frequency 30 kHz, concentration of sulfuric acid 2%, extraction time 40 min, temperature 50℃.

Key words: Malva sylvestris L.var.mauritiana Miller, ultrasonic extraction, pigment