Black Cumin Seeds (Kalonji) Safety Inspection

Black Cumin Seeds (Kalonji) are highly valued for their medicinal properties, making them targets for adulteration with mineral oil, dyes, and stone grit. 1. The Palm Rub Test (Dye & Oil): Take a small amount of seeds and rub them vigorously between your palms for 30 seconds. - Pure Kalonji: Should not leave any significant color or oily residue. It should feel naturally dry. - Adulterated: If your palms turn black or feel greasy/oily, the seeds have been treated with artificial dyes or mineral oil to enhance their color and weight. 2. The Water Float & Color Test: Drop a teaspoon of seeds into a glass of clean water. - Pure: Water remains clear. The seeds may float initially but won't bleed color. - Dye Treated: The water will turn cloudy, blackish, or brownish as the artificial dye leaches out. Oil-coated seeds will form a greasy film on the surface. 3. The Scent & Taste Check: Pure Kalonji has a very distinct, sharp, peppery, and slightly onion-like aroma when crushed. - Adulterated: Adulterants like grass seeds or stone grit will have no aroma. A chemical or kerosene-like smell indicates mineral oil treatment. 4. Visual Inspection (Grit & Stones): Spread the seeds on a white plate. Look for small, angular black particles that don't look like seeds. Use a magnifying glass if needed; vendors often mix small black stones or gravel painted to match the seeds.