Metanil Yellow in Gram flour - Adulteration of Metanil Yellow in Flour

ADULTERATION OF METANIL YELLOW IN GRAM FLOUR

Adulterant: Metanil yellow-

Metanil yellow is the Toxic non-permitted food color used extensively in Asian countries as food color.

Genuine Product: Gram flour without metanil yellow.

Health effect of Metanil yellow:

·         Disturb Central Nervous system.

·         Paralysis

Reason for adulteration: To increase the brightness of gram flour for look like a better quality.

Test Method:

1.    Title

Detection of Metanil yellow in Gram flour (besan)

2.       Principle

Color development                                   

3.    Reagents

• Alcohol
• Hydrochloric acid
  

4.     Apparatus

4.1.        Test tube

4.2.        Pipette.

5.     Procedure

·         Take half teaspoon of besan in test tube.

·         Pour 3 ml of alcohol in the test tube.

·         Mix up the contents thoroughly up by shaking the test tube.

·         Add 10 drops of hydrochloric acid in it.

·         Appearance of pink color in gram flour indicates the presence of metanil yellow adulteration.

6.    Calculation-

No

7.     Reference/Protocol

·         FSSAI Manual on adulteration, Part – 2.

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