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 strains
Sourcea
Media
Sensitivityb
1 × MIC
2 × MIC
4 × MIC
Gram-negative bacteria
Pseudomonas fluorescens 1.55
CGMCC
LB
+
+++
+++
P. fluorescens 1.1802
CGMCC
LB
+
+++
+++
Shewanella putrefaciens 1.6515
CGMCC
LB
−
+
++
S. piezotolerans 1.6160
CGMCC
LB
−
−
+
Aeromonas hydrophila 10868
CICC
LB
−
+
++
Salmonella enteritidis 13076
ATCC
LB
−
+
++
S. enteritidis 1.106031
CGMCC
LB
–
+
++
Escherichia coli 1.90
CGMCC
LB
+
+++
+++
E. coli 80739
ATCC
LB
+
+++
+++
Gram-positive bacteria
Brochothrix thermosphacta 11509
ATCC
LB
+
++
++
Clostridium butyricum 1.5205
CGMCC
LB
+
++
+++
Micrococcus luteus 1.193
CGMCC
LB
+
+++
+++
Listeria monocytogenes 35152
ATCC
TSYEB
+
+++
+++
L. monocytogenes 54002
CMCC
TSYEB
+
+++
+++
Staphylococcus aureus 1.128
CGMCC
TSB
+
++
+++
S. aureus 1.169
CGMCC
TSB
−
+
++
Bacillus subtilis 1.7740
CGMCC
LB
+
++
++
B. cereus 1.229
CGMCC
LB
+
++
+++
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.