J J Ruocco

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The uptake of humic acids by mycelia of Aspergillus niger was demonstrated to be energy-dependent with a sensitivity to sodium azide and to 2,4-dinitrophenol. Greater uptake of humic acids by submerged mycelium occurred at pH 3.0 and at 32 degrees C. The rate of uptake was influenced by the concentration of humic acids with an apparent Km of 0.2 grams/ml(More)
Formate dehydrogenase in Desulfovibrio gigas was measured by following the release of 14CO2 from radiolabeled formate. Experiments with whole cells using sulfate as the electron acceptor revealed optimal formate dehydrogenase activity at pH 7.0 and formate utilization followed saturation kinetics. While formate dehydrogenase was constitutively produced in(More)
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