INVESTIGATION OF THREE MICROBIOLOGICAL SUBSTRATES CONTAINING WHALE MEAT EXTRACT
FORT DETRICK FREDERICK MD
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Whale meat extract appears to be usable to replace beef extract without disadvantage. The small differences in growth between the Vato and Oxoid substrate that could be observed probably are due to other factors. The nutrient broth from Vato is considerably richer in nitrogen containing material 16 gl against 8 gl for Oxoid which probably explains the generally higher density of broth cultures grown for two days. The stronger pigmentation of S. aureus with Blood Agar Base from Vato is probably due to the fact that yeast extract is included. Oxoid recommends for stronger pigmentation Blood Agar base No. 2 which is richer in nitrogen containing material and where also yeast extract is included.