detection of ghee with vanaspati
1. Take 100 ml of melted ghee in a test tube.
2. In another test tube mix 0.1 ml of the furfural solution with 10 ml conc. HCL.
3. Mix the melted ghee with the furfural acid solution.
4. Shake well, allow the mix to stand for 10 min. and observe the colour.
5. Appearance of crimson colour indicates the adulteration of ghee with sesamum oil.
Simple tests to detect adulterationMethod 1
Put a spoon of ghee on your palm, if it starts to melt itself that is pure. Normally, pure ghee melts on the body temperature.
Method 2
Put a spoon of ghee and heat it. If it melts quickly and appear dark brownish color, that is pure ghee. Within a few seconds, the ghee will be melted. If it takes a longer time to melt and appear light yellow in color, it is impure.
Method 3
Ghee can be tested in a Laboratory for its molecular melting structure and smoking points to determine the purity and determine if the ghee has been adulterated with vegetable oils.
Take a small amount of pure Desi ghee in a test tube, heat it to melt and add an equal amount of concentrated HCL* (the acid that the stomach uses to digest food) and a pinch of sugar. Shake the tube hard and wait for five minutes. The appearance of crimson colour in the lower acid layer shows that hydrogenated oils/ vanaspati ghee has been mixed as an adulterant. Yet, if the colour of the mixture does not change, it means that there is no adulteration. more