Direct Answer • Key Takeaway
Ər/ or Vp Is a Test Used to Detect Acetoin in a Bacterial Broth Culture. the Test Is Performed by Adding Alpha-Naphthol and Potassium Hydroxide to the Voges-Proskauer Broth Which Has Been Inoculated with Bacteria. a Cherry Red Color Indicates a Positive Result, While a Yellow-Brown Color Indicates a Negative Result.
