Appearance (clearness) |
clear to slightly opalescent |
Appearance (color) |
red |
pH-value (25 °C) |
7.2 - 7.6 |
Growth promotion test in accordance with the current version of DIN EN ISO 11133. |
Inoculum on reference medium (Salmonella typhimurium ATCC 14028 (WDCM 00031)) |
|
Inoculum on reference medium (Salmonella enteritidis ATCC 13076 (WDCM 00030)) |
|
Colony count (Salmonella typhimurium ATCC 14028 (WDCM 00031)) |
|
Colony count (Salmonella enteritidis ATCC 13076 (WDCM 00030)) |
|
Recovery on test medium (Salmonella typhimurium ATCC 14028 (WDCM 00031)) |
≥ 50 % |
Recovery on test medium (Salmonella enteritidis ATCC 13076 (WDCM 00030)) |
≥ 50 % |
Growth (Escherichia coli ATCC 25922 (WDCM 00013)) |
Growth or partial inhibition |
Growth (Escherichia coli ATCC 8739 (WDCM 00012)) |
Growth or partial inhibition |
Growth (Enterococcus faecalis ATCC 29212 (WDCM 00087)) |
total inhibition |
Growth (Enterococcus faecalis ATCC 19433 (WDCM 00009)) |
total inhibition |
Colonies (Salmonella typhimurium ATCC 14028 (WDCM 00031)) |
Colonies with black centre |
Colonies (Salmonella enteritidis ATCC 13076 (WDCM 00030)) |
Colonies with black centre |
Colonies (Escherichia coli ATCC 25922 (WDCM 00013)) |
Yellow colonies |
Colonies (Escherichia coli ATCC 8739 (WDCM 00012)) |
Yellow colonies |
Incubation: 24 ± 3 hours at 37 ± 1 °C A recovery rate of 50 % is equivalent to a productivity value of 0.5. The indicated colony counts result from the sum of a triple determination. Reference media: Tryptic Soy Agar |