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

• 基础研究 • 上一篇    下一篇

锌氨基酸螯合物的抑菌活性研究

龚 毅,胡晓波,彭丽霞,李 昌,谢明勇*   

  1. 南昌大学 食品科学与技术国家重点实验室
  • 收稿日期:2009-06-10 出版日期:2009-09-01 发布日期:2014-04-14
  • 通讯作者: 谢明勇 E-mail:myxie@ncu.edu.cn
  • 基金资助:

    教育部“长江学者和创新团队发展计划”项目(IRT0540)

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

摘要:

为研究锌氨基酸螯合物的抑菌活性,用EDTA 络合滴定法测定四种锌氨基酸螯合物——甘氨酸锌、苏氨酸锌、蛋氨酸锌和赖氨酸锌的锌含量,并利用红外光谱对其进行表征。最后采用琼脂扩散法和微量肉汤稀释法检测四种锌氨基酸螯合物、硫酸锌、庆大霉素对大肠杆菌、枯草芽孢杆菌和金黄色葡萄球菌的抑菌效果。发现锌氨基酸螯合物有一定的抑菌活性,其抑菌效果与锌离子含量有关。

关键词: 锌, 氨基酸, 螯合物, 红外光谱, 抑菌

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

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