FOOD SCIENCE ›› 2011, Vol. 32 ›› Issue (24): 111-113.doi: 10.7506/spkx1002-6630-201124024

• Processing Technology • Previous Articles     Next Articles

Optimization of Extraction Process for Total Flavonoids from Flowers of Rosa xanthina Lindle

YANG Shu-ping1,HAN Li-jun2,LIU Le-peng1,XU Rui-bo1,HE Xin-ran1,CHEN Li-juan1   

  1. (1. School of Chemical Engineering, Huaihai Institute of Technology, Lianyungang 222005, China;
  • Online:2011-12-25 Published:2011-12-29

Abstract: Objective: To optimize the extraction of total flavonoids from the flowers of Rosa xanthina Lindle. Methods: An L9 (34) orthogonal array design was employed to optimize the extraction conditions. The effects of ethanol concentration, solid-to-liquid ratio, extraction time and temperature were studied on extraction rate of total flavonoids, as determined by ultraviolet (UV) spectrometry. Results: The optimal extraction conditions were 75% ethanol concentration as solvent solid-to-liquid ratio of 1:30 and 75 ℃ for an extraction duration of 1 h. Under the optimal extraction conditions, the maximum extraction rate was up to 32.77 mg/g. Conclusion: The optimal extraction process obtained in this study has excellent stability.

Key words: Rosa xanthina Lindle flower, flavonoids, orthogonal array design, extraction

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