FOOD SCIENCE ›› 2009, Vol. 30 ›› Issue (24 ): 397-400.doi: 10.7506/spkx1002-6630-200924090

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Chelation Rate of Zinc Amino Acid Chelate Determined by Sephadex Gel Filtration Chromatography

HU Xiao-bo1，GONG Yi1，GUO Zhi-yong1,2，NIE Shao-ping1，LI Chang1，WANG Yuan-xing1，XIE Ming-yong1,*   

  1. (1. State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China；
    2. School of Environment and Natural Resources, Renmin University of China, Beijing 100872, China)
  • Received:2009-09-10 Online:2009-12-15 Published:2010-12-29
  • Contact: XIE Ming-yong1,* E-mail:myxie@ncu.edu.cn

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Abstract:

Chelation rates between trace elements and amino acids are usually used to evaluate chelate quality. In this paper, chelation rates of zinc methioninate and zinc threoninate were determined by Sephadex gel filtration chromatography. Results indicated that Sephadex gel filtration chromatography could be used to determine chelation rate of zinc methioninate due to the consistent result with other determination methods. However, it was not feasible to determine the chelation rate of zinc threoninate.

Key words: zinc amino acid chelate, chelation rate, Sephadex gel filtration chromatography, zinc methioninate, zinc threoninate

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