FOOD SCIENCE ›› 2009, Vol. 30 ›› Issue (17 ): 84-87.doi: 10.7506/spkx1002-6630-200917018

Previous Articles     Next Articles

Antibacterial Activities of Four Zinc-amino Acid Chelates

GONG Yi,HU Xiao-bo,PENG Li-xia,LI Chang,XIE Ming-yong*   

  1. State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
  • Received:2009-06-10 Online:2009-09-01 Published:2014-04-14
  • Contact: XIE Ming-yong E-mail:myxie@ncu.edu.cn

Abstract:

Four zinc-amino acid chelates, including zinc-glycinate, zinc-threoninate, zinc-methioninate and zinc-lysinate chelates were determined by EDTA titration for their zinc contents and characterized by infrared spectroscopy and their antibacterial activities against Escherichia coli, Bacillus subtilis and Staphylococcus aureus were assayed by agar diffusion method and broth dilution methods and compared with those of zinc sulfate and gentamycin. The results showed that all these zincamino acid chelates have a certain antibacterial activity which is associated with zinc content.

Key words: zinc, amino acid, chelate, infrared spectrum, bacteriostasis

CLC Number: