Turmeric Powder Adulteration: Hidden Toxins & How to Spot Them

Turmeric Powder Adulteration: What You Should Know

Turmeric, the golden spice of India, is celebrated not only for its color but also for its medicinal properties. Yet, recent investigations have revealed alarming instances of adulteration. In November 2024, tests showed that some turmeric in the market contained lead chromate, a toxic yellow pigment, far exceeding safe limits. This raises concerns about what really ends up in your kitchen.

To protect your health, it is important to recognize common adulterants and use simple, FSSAI-recommended home tests to verify the purity of turmeric powder.

Common Adulterants in Turmeric Powder

Lead Chromate

Why Used: To make turmeric appear bright yellow and visually appealing.

Health Effects: Toxic, can cause lead poisoning affecting the nervous system, kidneys, and liver.

Metanil Yellow

Why Used: A synthetic dye to mimic pure turmeric’s color.

Health Effects: Causes food poisoning, nausea, stomach cramps, and other digestive issues.

Chalk Powder / Calcium Carbonate

Why Used: To increase weight and bulk.

Health Effects: May cause digestive discomfort and reduce nutritional value when consumed frequently.

FSSAI-Approved Home Tests for Turmeric Purity

Water Test – Pure turmeric settles at the bottom, while adulterants may float or dissolve.

Acid Test – Adding a few drops of hydrochloric acid; pink color indicates metanil yellow.

Palm Rub Test – Pure turmeric leaves a mild yellow stain; artificial coloring leaves a bright stain.

Smell Test – Authentic turmeric has a strong, earthy aroma; adulterated powder may smell bland or chemical-like.