FOOD SCIENCE ›› 2009, Vol. 30 ›› Issue (8): 190-193.doi: 10.7506/spkx1002-6630-200908039

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Determination of Changes in Sugar Compositions of Yacon under Different Storage Conditions by HPLC

ZHENG Ming-min LI Jing-wei RONG Ting-zhao LIU Jian*   

  1. (Institute of Maize Research, Sichuan Agricultural University, Yaan 625014, China)
  • Received:2008-06-30 Revised:2008-12-29 Online:2009-04-15 Published:2010-12-29
  • Contact: LIU Jian* E-mail:ljian79@hotmail.com

Abstract:

The total sugar in yacon, the root of Saussurea involucrata Kar. et Kir. et Maxim was extracted with hot water, and then its compositions were determined by HPLC at 35 ℃, with ZORBAX Carbohydrate column (4.6 × 150 mm, 5 μm) as the stationary phase and 75% acetonitrile solution as the mobile phase. This method is simple, accurate and reliable for the detection of the sugar compositions in yacon. Furthermore the changes in sugar compositions of tyacon stored at 4 ℃ and room temperature were investigated. The obtained results can provide the theoretical guidance and experimental basis for the storage of yacon and more information for better use of yacon.

Key words: yacon, HPLC, storage, sugar change

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