FOOD SCIENCE ›› 2006, Vol. 27 ›› Issue (9): 172-174.

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Study on Extraction Ultrasonic Methods of Flavonoids from Onion Skin and Their Spectrophotometry Determination

 HOU  Dong-Yan,   Hui-Rui-Hua,   Liu-Xiao-Yuan,   Li-Xue-Cheng   

  1. Department of Chemistry, Anshan Normal University, Anshan 114005, China
  • Online:2006-09-15 Published:2011-10-20

Abstract: The ultrasonic extraction method was used for extracting flavonoids in onion skin, the optimum extracting conditions were investigated. The flavonoids in onion skin were determined by sepctrophotometry. The results show that the recovery is 99.6%~105% and the coefficient of variation is 0.18%.

Key words: onion skin, flavonoids, spectrophotometry, ultrasonic extraction method