Abstract:

Yellow pigment were extracted from peel of Trichosathes kirilowii Maxim by ultrasonic-assisted method.On the basis of the single factor,the extraction process was optimized by response surface methodology.The optimal extraction conditions were obtained as follows:ethanol volume fraction about 40%,material-to-liquid ratio of 1:30 (g:mL),ultrasonic power of 175W,ultrasonic-assisted extracting time about 39 min and extraction temperature at 60℃.Under the conditions,the extraction yield of yellow pigment reaches 0.323 by the optimal ultrasonic-assisted extraction technology from peel of Trichosathes kirilowii Maxim.

Key words: Trichosathes kirilowii Maxim, yellow pigment, ultrasound-assisted, extraction, optimization