Table 3. The effect of nitroso-hemoglobin and storage period (13–16 d) on combined bacteria in the ratio (1:1) injected in minced beef

The effect of NO-Hb and storage for 13 d on the combine bacteria in the minced beef
Bacteria in the ratio (1:1) injected in fresh beef without NO-Hb
Parameters TBC Escherichia coli Staphylococcus Pseudomonas Salmonella LAB
Log10−1 CFU/g Un 1.03±0.02b 1.27±0.02a Un 0.43±0.00c Un
Log10−2 CFU/g Un 0.12±0.00a OR Un OR Un
Log10−3 CFU/g Un - - 2.26±0.85b - 2.64±0.02a
Log10−4 CFU/g 2.52±0.02a - - 1.07±0.00c - 1.71±0.01b
Bacteria in the ratio (1:1) injected in fresh beef with NO-Hb
Log10−1 CFU/g 2.67±0.01a - - 0.52±0.00c - 2.12±0.88b
Log10−2 CFU/g 1.67±0.00a - - - - 1.29±0.01b
Log10−3 CFU/g 0.58±0.00a - - - - 0.22±0.00b
Log10−4 CFU/g OR - - - - -
The effect of NO-Hb and storage for 16 d on the combine bacteria in the minced beef
Bacteria in the ratio (1:1) injected in fresh beef without NO-Hb
Log10−1 CFU/g 3.73±0.01a 0.75±0.00e 0.94±0.00d 1.57±0.00c 0.22±0.00f 2.54±0.33b
Log10−2 CFU/g 1.64±0.02a - OR 0.75±0.00c - 1.47±0.01b
Log10−3 CFU/g 0.88±0.00a - - OR - 0.75±0.00a
Log10−4 CFU/g OR - - - - OR
Bacteria in the ratio (1:1) injected in fresh beef with NO-Hb
Log10−1 CFU/g 0.92±0.00a - - - - 0.80±0.00b
Log10−2 CFU/g OR - - - - OR
Log10−3 CFU/g - - - - - -
Log10−4 CFU/g - - - - - -
Values are given as means±SD from triplicate determinations.
The valid range we used in our study is ranging from 25–250 (Log10 CFU).
Different letters in the same row indicate significant differences (p<0.05).
TBC, total bacterial count, Escherichia coli, (E. coli O157:H7, E. coli (ETEC), E. coli (EHEC), Staphylococcus, (S. aureus, S. argenteus, S. simiae), Pseudomonas, (P. lundensis, P. mudicolens, P. aeruginosa), Salmonella, (S. Typhimurium, S. Javiana, S. Enteritidis), LAB, (S. thermophilus, L. bulgaricus, L. casei, and M. enterococcus); Un, uncountable=too numerous to count (TNTC): more than 300 colonies; -, not detected; OR, out of range. Log10−1 CFU/g, first dilution; Log10−2 CFU/g, second dilution; Log10−3 CFU/g, third dilution; Log10−4 CFU/g, fourth dilution.