Study on Technology of Ultrasound-Assisted Extraction of Steroid Saponins from Trigonell afoenum-graecum L.

Using the yield of steroid saponins as an indext,he extracting technology of steroid saponins from fenugreek seeds was studied by ultrasound-assist method.With the single factor and orthogonal testst,he technological optimum pa-rameters for ultrasonic extraction were found.The contents of saponins from Trigonell afoenum-graecum L.were determined by spetrophotometry.The results show that the factors influencing extraction yield are as followsc:oncentration of ethanol solid-liquid ratio ultrasonic time ultrasonic power.The yield of total saponins is 3.07% at the optimum conditions of 50% ethanol solution,1∶20 of solid-liquid ratio and 40 min for extraction.