What do the results of the Biuret Test indicate about the protein presence in the given samples?
Understand the Problem
The question is relating to the results and observations of a Biuret Test conducted on various food samples to determine protein presence.
Answer
A, B, C, D show protein; E, F, G, H show low/no protein.
The Biuret test results indicate that samples A (boiled egg), B (chicken meat), C (powdered milk), and D (snail's meat) show a violet color, suggesting these samples have a significant protein presence. Samples E (bread), F (apple), G (fufu), and H (cal cheese) show light blue, indicating low or no significant protein presence.
Answer for screen readers
The Biuret test results indicate that samples A (boiled egg), B (chicken meat), C (powdered milk), and D (snail's meat) show a violet color, suggesting these samples have a significant protein presence. Samples E (bread), F (apple), G (fufu), and H (cal cheese) show light blue, indicating low or no significant protein presence.
More Information
The Biuret test detects proteins by reacting with peptide bonds, causing a violet color. The depth of the color correlates with protein concentration.
Tips
A common mistake is assuming any color change confirms protein presence; only a violet color indicates proteins.
Sources
- Biuret Test for Protein: Principle, Procedure, Results, Uses - microbenotes.com
- Biuret Test - an overview | ScienceDirect Topics - sciencedirect.com
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