Inhibitory effects of pH, salinity, and tea polyphenols concentration on the specific spoilage organisms isolated from lightly-salted large yellow croaker (Pseudosciaena crocea)
文献类型： 外文期刊
作者： Guo, Quan-you 1 ; Shan, Ke 1 ; Yang, Xu 1 ; Jiang, Chao-jun 1 ; Zhu, Lin 1 ;
作者机构： 1.Chinese Acad Fishery Sci, East China Sea Fisheries Res Inst, Shanghai, Peoples R China
2.Univ Shanghai Sci & Technol, Shanghai, Peoples R China
关键词： antibacterial effect; growth dynamic; Hafnia alvei; lightly-salted Pseudosciaena crocea; Proteus vulgaris
期刊名称：FOOD SCIENCE & NUTRITION （ 影响因子：3.553； 五年影响因子：3.634 ）
ISSN： 2048-7177
年卷期：
页码：
收录情况： SCI
摘要： Proteus vulgaris and Hafnia alvei were identified as specific spoilage organisms (SSOs) isolated from the refrigerated lightly-salted large yellow croaker (Pseudosciaena crocea). In this work, the inhibitory effects of pH, salinity, and tea polyphenols concentration on both strains were investigated. Modified Gompertz models were used to estimate the kinetic parameters mu(m) (maximum specific growth rate) and lambda (duration of lag phase) of the two strains under different conditions, demonstrating that their growth rates decreased with the decrease of pH as well as the increase of salinity and tea polyphenols concentration, and the growths of both strains stopped while the salinity and tea polyphenols concentration increased to 0.05 and 5%, respectively. Response surface methodology (RSM) based on a three-level three-factor Box-Behnken Design (BBD) was employed to optimize the combination of these three antibacterial factors. The results showed that the optimum inhibitory conditions were: tea polyphenols concentration 0.05%, salinity 3.46%, and pH 6.96 to inhibit the growth of P. vuigaris; tea polyphenols concentration 0.05%, salinity 3.45%, and pH 6.94 to inhibit H. alvei. Validation experiments were performed and demonstrated that under these conditions, the growth of the two SSOs could be 100% inhibited. This research provided references for the inhibition of the SSOs of lightly-salted large yellow croaker and the extension of its shelf life.
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