Microbiology: Nitrate Reductase Test

The video tutorial explains the nitrate reductase test, a method used to determine the presence of nitrate reductase enzyme in bacteria. It covers the role of this enzyme in the nitrogen cycle, particularly in denitrification. The procedure involves adding solutions A and B to a nitrate broth and observing color changes. A red color indicates the presence of nitrate reductase. If no color change occurs, zinc dust is added to differentiate between the presence of both nitrate and nitrite reductase or neither. The video also discusses interpreting results using a flow chart.

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