Research Article

Effects of Bioactive Packaging Films Incorporated with Bifidocin A on Microbial Reduction and Quality Parameters of Chill-Stored Spanish Mackerel (Scomberomorus niphonius) Fillets

Table 2

Antimicrobial spectrum of the films incorporated with bifidocin A.

Indictor strainsSourceaMediaSensitivityb
1 × MIC2 × MIC4 × MIC

Gram-negative bacteria
Pseudomonas fluorescens 1.55CGMCCLB+++++++
P. fluorescens 1.1802CGMCCLB+++++++
Shewanella putrefaciens 1.6515CGMCCLB+++
S. piezotolerans 1.6160CGMCCLB+
Aeromonas hydrophila 10868CICCLB+++
Salmonella enteritidis 13076ATCCLB+++
S. enteritidis 1.106031CGMCCLB+++
Escherichia coli 1.90CGMCCLB+++++++
E. coli 80739ATCCLB+++++++
Gram-positive bacteria
Brochothrix thermosphacta 11509ATCCLB+++++
Clostridium butyricum 1.5205CGMCCLB++++++
Micrococcus luteus 1.193CGMCCLB+++++++
Listeria monocytogenes 35152ATCCTSYEB+++++++
L. monocytogenes 54002CMCCTSYEB+++++++
Staphylococcus aureus 1.128CGMCCTSB++++++
S. aureus 1.169CGMCCTSB+++
Bacillus subtilis 1.7740CGMCCLB+++++
B. cereus 1.229CGMCCLB++++++

aCGMCC, China General Microbiological Culture Collection Center; CICC, China Center of Industrial Culture Collection; ATCC, American Type Culture Collection; CMCC, National Center for Medical Culture Collections. bInhibition zone (mm): +++, >21 mm; ++, 16–20 mm; +, 1–15 mm; −, no inhibition.