Ultrasound-Assisted Extraction of Total Phenolic Compounds from Inula helenium

Abstract EN

Ultrasound-assisted extraction (UAE) of phenolic compounds from Inula helenium was studied.

Effects of ethanol concentration, ultrasonic time, solid-liquid ratio, and number of extractions were investigated.

An orthogonal array was constructed to optimize UAE process.

The optimized extraction conditions were as follows: ethanol concentration, 30%; solid-liquid ratio, 1 : 20; number of extractions, 2 times; extraction time, 30 min.

Under the optimal conditions, the yield of total phenolic compounds and chlorogenic acid was 6.13±0.58 and 1.32±0.17 mg/g, respectively.

The results showed that high amounts of phenolic compounds can be extracted from I.

helenium by ultrasound-assisted extraction technology.