The red slant and yellow butt on TSI test indicate
Understand the Problem
The question is asking about the interpretation of a specific result from a TSI (Triple Sugar Iron) test, which is a biochemical test used to differentiate between types of bacteria based on their ability to ferment sugars and produce gas. The specific scenario described involves a red slant and yellow butt, which indicates certain fermentation characteristics.
Answer
Glucose fermenter
The red slant and yellow butt on the TSI test indicate glucose fermentation.
Answer for screen readers
The red slant and yellow butt on the TSI test indicate glucose fermentation.
More Information
The red slant and yellow butt indicate that only glucose is fermented, resulting in an alkaline slant due to the utilization of peptones, with the butt remaining acidic.
Tips
One common mistake is assuming that other sugars are also fermented in this reaction. Ensure understanding of what each color change represents.
Sources
- Triple Sugar Iron (TSI) Test - Hardy Diagnostics - hardydiagnostics.com
- The Triple Sugar Iron (TSI) Test - Procedure, Uses and Interpretation - microbiologyinfo.com
- TSIA Test: Principle, Media, Procedure, Results, Uses - Microbe Notes - microbenotes.com
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