Submission of Proposal under Star College Scheme

Easy Identification of Adulteration in Food Materials

1. 
   Turmeric
   

1. 
   Turmeric is adulterated with Metanil yellow, to identify this, turmeric powder is added to water & few drops of hydrochloric acid is added.
   
2. 
   Redish color is developed.
   
3. 
   If the turmeric powder is pure, this color disappears after few minutes.
   
4. 
   If the turmeric powder is adulterated with Metanil yellow, the red colour remains unchanged.
   

Observation_:__Inference:_Adulterated/_Non-adulterated.____Sweets_(Made_of_Mava)'>Observation:

Inference:
Adulterated/ Non-adulterated.

2. 
   Sweets (Made of Mava)
   

1. 
   Take a small piece of sweet and add about 1 ml of hydrochloric acid to it.
   
2. 
   If purple colour develops then it indicates that the sweet is adulterated with metanil yellow.
   

Observation:

Inference:
Adulterated/ Non-adulterated.

3. 
   Pulses
   

1. 
   Many times the pulses are coloured with metanil yellow.
   
2. 
   To identify coloured pulses put a small quantity of pulses in water & add hydrochloric acid. If yellow colour develops then it indicates that the pulses are adulterated with metanil yellow.
   

Observation:__Inference:_Adulterated/_Non-adulterated.___Edible_oil'>Observation:

Inference:
Adulterated/ Non-adulterated.

4. 
   Edible oil
   

1. 
   Take about 1-2 ml of oil in a test tube and add 5 ml so alcoholic KOH solution to it. Keep it in water bath with intermediate shaking
   
2. 
   If the edible oil is adulterated with crude oil, two layers are observed. If pure the oil dissolves in the alcoholic solution of KOH.
   

Observation:

Inference:
Adulterated/ Non-adulterated.