Effects of Metal ions, Chitosan and Potassium Sorbet on the Antimicrobial Activity of Egg Yolk Immunoglobulin against Pseudomonas taetrolens

被引:0
|
作者
Zhang, Qian [1 ]
Lin, Hong [1 ]
Xu, Yafu [1 ]
Sui, Jianxin [1 ]
Cao, Limin [1 ]
机构
[1] Ocean Univ China, Food Safety Lab, Qingdao 266003, Peoples R China
关键词
egg yolk immunoglobulin (IgY); Pseudomonas taetrolens; Antimicrobial activity; Synergetic effect; INHIBITION; SPOILAGE; NISIN;
D O I
暂无
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
The egg yolk immunoglobulin (IgY) now receives increasing attention as a natural and safe alternative of chemical antimicrobial agents. To find suitable synergetic factors of this immunoglobulin, here the effect of metal ions, chitosan and potassium porbate on the antimicrobial activity of specific IgY against Pseudomonas taetrolens was investigated. Appropriate levels of Mg2+, Ca2+, K+ were able to enhance the activity of the IgY to inhibit the growth of Pseudomonas taetrolens in solid medium, however, only K+ and Ca2+ exhibited similar synergetic effects in Paralichthys olivaceus samples. Chitosan demonstrated no effects on IgY in culture media, but when used in the fish, the antimicrobial activity of the IgY was significantly increased in the presence of chitosan. Both in medium and fish samples, a significant synergistic effect of potassium sorbet was validated on the IgY in inhibiting the growth of Pseudomonas taetrolens. These results allowed us to suggest chitosan and potassium as promising synergetic factors of specific IgY for food preservation.
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页码:191 / 196
页数:6
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