Too much foam in milk? Here's what it could mean
To detect synthetic detergents in milk, the FSSAI advises shaking a sample in a glass; a thick, persistent foam layer indicates adulteration, while pure milk produces minimal, quickly fading bubbles.
To detect synthetic detergents in milk, the FSSAI advises shaking a sample in a glass; a thick, persistent foam layer indicates adulteration, while pure milk produces minimal, quickly fading bubbles.
To detect synthetic detergents in milk, the FSSAI advises shaking a sample in a glass; a thick, persistent foam layer indicates adulteration, while pure milk produces minimal, quickly fading bubbles.
Milk is an indispensable part of daily life, whether it is poured into morning tea and coffee or used to prepare yoghurt and paneer. However, growing concerns over food adulteration have left many consumers wondering about the purity of the dairy products they bring home. Unscrupulous suppliers often mix synthetic detergents into milk to increase its density, alter its visual appearance, and generate an unnatural froth. To help households protect themselves, the Food Safety and Standards Authority of India (FSSAI) has demonstrated a remarkably simple test that anyone can perform in their kitchen.
How to perform the detergent test at home
In an informative video shared on Instagram, the FSSAI outlined a quick screening method requiring nothing more than a small transparent glass and a sample of milk. Pour 5 to 10 ml of milk into a small glass and shake it vigorously. Observe the top layer closely for any immediate lather or dense bubbles. If a thick, persistent layer of foam forms on the surface, it strongly suggests the presence of chemical detergents. Pure milk, on the other hand, will form minimal bubbles that dissipate rapidly.
Why detergent creates dense foam in milk
The drastic difference in foaming behavior comes down to surface-active agents, commonly known as surfactants. Detergents and soaps contain high levels of surfactants designed to trap air and create long-lasting lather. When surfactant-laced milk is shaken, these compounds produce stable, stubborn bubbles that remain visible for a considerable duration. While genuine unadulterated milk can occasionally produce light bubbles upon shaking, a thick and lingering foam layer serves as an immediate red flag.
Essential precautions when buying packaged milk
While preliminary testing at home offers valuable peace of mind, prevention remains the best defense. Consumers should always purchase dairy from reputed, verifiable sellers and inspect packaging carefully before buying. Ensure that milk pouches or cartons are completely intact, free from leaks, and showing no signs of tampering. Always read the product label for vital details such as batch numbers, manufacturing dates, and expiration markers.
Always verify FSSAI credentials
The regulatory authority strongly advises consumers to check the mandatory safety credentials printed on packaged food products. Look for the standard FSSAI logo alongside a valid 14-digit license number. A authentic license number confirms that the dairy processor operates within India's established legal framework for food safety. However, remember that packaging alone does not guarantee safety. Proper refrigeration, sanitary transportation, and clean storage conditions are equally vital to prevent spoilage.
When to seek professional laboratory testing
Home screening methods serve as an excellent tool for raising everyday awareness, but they cannot replace scientific analysis. If you suspect chronic adulteration or notice unusual odours, discolouration, or strange textures in your milk, discard the product immediately. Serious concerns should be reported to local food safety authorities or official consumer grievance portals for definitive laboratory testing.