The ultrasonic-assisted extraction process of total phenols and flavones from burdock were studied. To optimize the process of polypheno extraction from burdock,the response surface methodology with three factors at three levels was adopted on the basis of single factor experiments. Model fitting and regression analysis of experimental data showed that two significant factors influenced total phenol and flavone yields were ethanol concentration and liquid ratio. The results showed that the optimal extraction conditions were : ultrasonic power 200 W,ethanol solvent concentration 61%,extraction time 30 minutes,room temperature and liquid ratio 1∶ 21( g∶ m L). Under the optimal conditions,the yield of total phenols and flavones from burdock reached 47. 12 mg / g and 20. 69 mg / g respectively.
FAN Jin-bo, CAI Xi-tong, FENG Xu-qiao, HOU Yu. , {{custom_author.name_en}}.
Optimization of ultrasonic-assisted extraction of polyphenols from burdock[J]. Food and Fermentation Industries, 2014, 40(11): 247-252 https://doi.org/10.13995/j.cnki.11-1802/ts.201411043