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  • 1.09045 - MMGA (Mineral Modified Glutamate) agar

1.09045 Millipore

MMGA (Mineral Modified Glutamate) agar

acc. ISO 16649 GranuCult



Quality Level   300
form   medium granules (dehydrated (DCM))
mfr. no.   GRANUCULT®
application(s)   microbiological culture: suitable
  microbiology: suitable
pH   6.5-6.9 (25 °C, 30.2 g/L in H2O, after autoclaving)
solubility   30.2 g/L
Featured Industry   Food and Beverages
suitability   Escherichia coli
storage conditions   Store at +15°C to +25°C.


Analysis Note

Appearance (clearness): clear
Appearance (colour): yellowish
pH-value (25 °C): 6.5 - 6.9
Inoculum on reference medium (Escherichia coli ATCC 11775 (WDCM 00090)):
Inoculum on reference medium (Escherichia coli ATCC 25922 (WDCM 00013)):
Colony count (Escherichia coli ATCC 11775 (WDCM 00090)):
Colony count (Escherichia coli ATCC 25922 (WDCM 00013)):
Recovery on test medium (Escherichia coli ATCC 11775 (WDCM 00090)): ≥ 70 %
Recovery on test medium (Escherichia coli ATCC 25922 (WDCM 00013)): ≥ 70 %
Growth (Citrobacter freundii ATCC 8090): no growth
Growth (Enterococcus faecalis ATCC 19433 (WDCM 00009)): no growth
Colonies (Escherichia coli ATCC 11775 (WDCM 00090)): turquoise
Colonies (Escherichia coli ATCC 25922 (WDCM 00013)): turquoise
Tested with membrane filter for 4 ± 1 hours at 37 ± 1°C aerobic with MMGA agar;
afterwards for 21 ± 3 hours at 44 ± 1 °C aerobic with Chromocult TBX agar.
A recovery rate of 70 % is equivalent to a productivity value of 0.7.
The indicated colony counts result from the sum of a triple determination.
Reference media: Tryptic Soy Agar

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