FOOD SCIENCE ›› 2009, Vol. 30 ›› Issue (8): 56-59.doi: 10.7506/spkx1002-6630-200908008

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Study on Ultrasonic-assisted Extraction of Limonin from Xiangxi Ponkan Peel and Analysis of Limonin Content  in Ponkan at Different Growth Periods and Peel and Seed of Different Citrus Varieties

ZHANG Zhao-hui,ZHU Zhong-pin,LI Hui   

  1. (College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China)
  • Received:2008-06-26 Revised:2008-09-04 Online:2009-04-15 Published:2010-12-29
  • Contact: ZHANG Zhao-hui E-mail:zhaohuizhang77@hotmail.com

Abstract:

The ultrasonic-assisted ethanol extraction technology of limonin from Xxiangxi ponkan peel was optimized through orthogonal test, and the effects of particle size of peel and extraction times on the extraction rate of limonin were also investigated. The results showed that the optimal extractant, ratio of material to extractant, extraction time, temperature, particle size and times are 80% ethanol, 1:7, 30 min, 50 ℃, 80 mesh and 4 times, respectively. Moreover, the contents of limonin in Xiangxi ponkan fruit at different growth periods, and peel and seed of different citrus varieties were determined by high performance liquid chromatography (HPLC). The results showed that the content of limonin in citrus seed is great higher than that in peel, especially which in Xiangxi pokan seed is the highest (0.0169%) among all tested samples. Following with the maturation of Xiangxi pokan, the content of limonin presents a downtrend.

Key words: limonin, citrus, ultrasonic extraction, high performance liquid chromatography (HPLC)

CLC Number: