Study on extraction of total flavonoids and antioxidant activity of corn silk by ionic liquid-microwave
SU Shi
CHI Cai-xia
WANG Shuang-xia
WANG Guang-hui
WANG Bin
Abstract：The experiment was to study the extraction process of total flavonoids from corn silk and their antioxidant activity,ionic liquid-microwave assisted extraction was used to extract total flavonoids from corn silk.Based on single-factor methodology,the response surface method was used to optimize the experimental conditions.The results showed that the optimum conditions were ultrasonicwave power 450 W,ionic liquid concentration 0.65 mol/L,liquid to solid ratio 25 mL/g,microwave time 30 min.Under the above conditions,the isoflavones yield of the corn silk was 5.21 mg/g.The results of antioxidant activity experiments showed that the flavonoids extracted from corn whisker had good antioxidant capacity.The corresponding IC50 values of hydroxyl radical and DPPH radical were 146.714 2 and 120.420 0 mg/L.The study indicates that extracting total flavonoids from corn silk by ionic liquid-microwave assisted extraction method is stably and feasibly,which can provide reference for the application of active ingredients from plants in the field of animal production.
Keywords：corn silktotal flavonoidsmicrowave-assisted extractionionic liquidantioxidant activity
Publication Date：2023-08-31
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 65-70 )