purity test for food

15 Home Purity Test For Food

Daily we use a lot of ingredients in our kitchen for cooking. But unfortunately, nowadays, most of the edible items are being adulterated. So, there is a serious need to check for the purity test for food before using them.

Since for long supply chains, it is impossible to track from where the food is coming to you. Hence FSSAI, the Food Safety and Standards Authority of India, an autonomous body under the Ministry of Health and Family Welfare, released a booklet of some home tests to check the quality of the daily used food products.

Therefore there are some easy to follow steps to check the quality of food. Here are some food items, their adulterates, and the purity test for food, which you can easily do at home.

Check Purity Of Food

Honey

Adulterant: Sugar Syrup, Corn Syrup

The most added adulterant to the honey is sugar syrup. To test if honey is pure or not, take some water in a transparent glass, add honey into it. If the honey is dissolved immediately in the water, then it is contaminated. Pure honey never dissolves faster in the water unless it is stirred.

Another method is to add 2-3 drops of vinegar to a mixture of honey and water. If you see foam, then the honey is adulterated.

Coconut Oil

Adulterant: Other Oil

Take the coconut oil in transparent glass and put it in the refrigerator for 30 minutes. Suppose the complete oil solidifies, then its pure coconut oil. If some oil remains on the top of solidified oil, then it is adulterated. 

Sugar

Adulterant: Chalk Powder

Take water in transparent or see-through glass and put a spoon full of sugar in it. If the sugar completely dissolves into the water without any traces, then it is pure. If there is chalk powder in it, then it will settle down at the bottom.

Milk

Adulterant: Water, Detergent

Put one drop of milk on a polished surface. If that drop flows slowly, leaving a white trace behind, then the milk is pure. If the milk is adulterated with water, it will flow immediately, leaving no trace behind.

To test the presence of detergent, mix 10 ml of milk with 10 ml of water and shake vigorously, if a thick layer of foam is formed, then the milk contains detergent while the thin layer indicates pure milk.

Salt

Adulterant: Chalk Powder

Take water in transparent or see-through glass and put a spoon full of salt in it. If the salt completely dissolves into the water without any traces, then it is pure. If there is chalk powder in it, then it will settle down at the bottom.

Turmeric Powder

Adulterant: Lead chromate, Chalk powder, Metanil yellow

Take a spoon of turmeric and add it in a transparent glass containing warm water. Do not mix it and keep it aside for some time. If the powder settles down without mixing, it is pure, whereas if you see water becoming cloudy, then it is contaminated.

There is also another method to check. Take some turmeric powder in transparent glass, add a few drops of water along with some hydrochloric acid and swirl the mixture. If the mixture turns pink, then it contains metanil yellow. If you see small bubbles on the mixture, then it is adulterated with chalk powder.

Cumin Powder / Cumin Seeds

Adulterant: Sawdust, Charcoal dust, Grass seeds, Starch

Take a spoon of cumin powder in a transparent glass containing water and leave it for some time. The pure powder settles down at the bottom, whereas adulterants float on water.

To test cumin seeds, rub then on your palm vigorously. If your palm turns black, then the cumin seeds are adulterated.

Red Chilli Powder

Adulterant: Artificial Color, Brick Powder

Take water in a see-through glass and add a spoon of red chilli powder to it. If gritty sediment found, then the chilli powder contains brick powder or sawdust. If there is a swirl of red color, then the artificial color is present in it.

Mustard Seeds

Adulterant: Argemone Seeds

Crush some mustard seeds. If you see the smooth texture on the exterior and yellow inside then it is pure. If the exterior is hard and white inside, then those are argemone seeds.

Black Pepper

Adulterant: Papaya Seeds

When you put black pepper in a bowl of alcohol, the real pepper will settle down at the bottom, whereas papaya seed floats on the top.

Coriander Powder

Adulterant: Husk

When you add a spoon of coriander powder in a transparent glass of water and stir it, pure coriander powder will settle at the bottom while the husk float on the top of the glass.

Condensed Milk / Khoya / Milk

Adulterant: Starch

Mix the sample in 20 ml of water and boil it. After getting cooled, add two drops of iodine in it. If the sample turns blue, starch is present in it.

Ghee / Butter

Adulterant: Starch, Vanaspati, Vegetable Oil

Melt the ghee and add two drops of iodine in that. If it turns purple, then it indicates the presence of starch.

Another method is to melt some butter or ghee, pour it in a glass jar, and keep it in the fridge. If there are separate layers formed, it indicates the presence of oil.

Take melted ghee or butter in a glass container, add a pinch of sugar to it, and shake vigorously. If you see a red color at the bottom, then the ghee or butter is adulterated with vegetable oil.

Mustard Oil

Adulterant: Argemone Oil

Add a few drops of nitric acid to mustard oil in transparent glass and shake vigorously. If you see red color, then it contains argemone oil.

Green Peas

Adulterant: Malachite Green

Place a moist white blotting paper on the green peas. If it turns green, then the peas are adulterated with malachite green.

In the same way, if you place green peas in warm water for 30 minutes, if the water turns green, then there is a presence of malachite green.

Leave a Comment

Scroll to Top