The impact of enterocin AS-48 on the shelf-life and safety of sardines (Sardina pilchardus) under different storage conditions

被引:19
作者
Ananou, S. [1 ,2 ]
Zentar, H. [2 ]
Martinez-Bueno, M. [1 ,2 ]
Galvez, A. [3 ]
Maqueda, M. [1 ]
Valdivia, E. [1 ,2 ]
机构
[1] Univ Granada, Fac Ciencias, Dept Microbiol, Granada 19071, Spain
[2] Univ Granada, Inst Biotecnol, E-18071 Granada, Spain
[3] Univ Jaen, Fac Ciencias Expt, Area Microbiol, Jaen, Spain
关键词
Enterocin AS-48; Sardina pilchardus; Fish quality; Shelf-life; Biogenic amines; PEPTIDE ANTIBIOTIC AS-48; HERRING CLUPEA-HARENGUS; LACTIC-ACID BACTERIA; MODIFIED ATMOSPHERE; BACILLUS-CEREUS; LISTERIA-MONOCYTOGENES; STAPHYLOCOCCUS-AUREUS; QUALITY INDEXES; BIOGENIC-AMINES; FISH PRODUCTS;
D O I
10.1016/j.fm.2014.06.008
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
The purpose of this study was to determine the effect of enterocin AS-48, packaged under normal atmosphere (NA), vacuum (VP) or modified atmosphere (MAP) on the shelf life and safety of fresh sardines (Sardina pilchardus) stored at 5 degrees C. We studied the effect of these hurdles, alone or combined, on the relevant autochthonous bacterial populations. Total volatile basic nitrogen (TVB-N) content was used as indicative of freshness. Levels of biogenic amines cadaverine, putrescine, tyramine, and histamine were also determined. The application of AS-48 did not reduce the mesophilic, psychrotrophic, or Gram negative bacteria viable cell counts under any of the storage conditions tested. AS-48 did cause significant reductions in viable staphylococci counts, especially under VP. In sardines under NA treated with AS-48, the populations of histamine- and tyramine-forming total and lactic acid bacteria (LAB) showed no significant reductions. MAP or VP with AS-48 allowed reductions (significant at some storage times) in histamine- and tyramine-forming LAB. The TVB-N content was also reduced under normal atmosphere and, especially, in sardines stored under MAR The most interesting results are those concerning the decrease (by several fold) in the levels of the biogenic amines cadaverine, putrescine, tyramine, and histamine determined after treatment with AS-48. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码:185 / 195
页数:11
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