Extraction of total flavonoids from green cotton fiber by ultrasonic-based response surface optimization
[Objective]This study is to optimize ultrasonic extraction conditions of total flavonoids in NGC fibers,in the hope of providing the basis for reasonable utilization and identification of NGC fibers.[Methods]The NGC fibers were used as raw materials and were utilized for total flavonoids extract by ultra-sonic cavitation effect to accelerate the dissolution of flavonoids in ethanol,to optimize the experimental condi-tions with Box-Benhnken center combination principle and response surface design.[Results]The optimal extraction conditions were as follows:solid-liquid ratio of 1∶50 g/mL,ethanol concentration of 50%,and ex-traction time of 50 min.Under these conditions,the average yield of total flavonoids was 5.25%,which was the best condition for the extraction of total flavonoids from NGC fibers by ultrasonic method.[Conclusion]The optimal condition Parameter for ultrasonic extraction of total flavonoids from green cotton fibers is a liquid to material ratio of 1∶50 g/mL,ethanol concentration50%,extraction time50 min,obtaining an average total fla-vonoid yield of 5.25%.
green cotton fibertotal flavonoidsresponse surface methodoptimum extraction conditionultrasionic cell-break
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