Groundnut Oil Safety Inspection

Groundnut oil is prized for its high smoke point and flavor, making it a target for adulteration with cheaper palm or cottonseed oils. 1. The Aroma Check: Natural groundnut oil has a very strong, distinct nutty peanut smell. If the oil is odorless or has a flat, generic oily smell, it's either highly refined or mixed with cheaper oils. 2. The Refrigeration Test: Groundnut oil has a different cloud point than palm oil. Chill the oil. If separate layers form or if it solidifies completely at moderate cold, it likely contains palm oil. 3. Color Observation: Pure cold-pressed groundnut oil is pale yellow to golden. If it's unnaturally bright yellow (dyes) or has a reddish tint (cottonseed oil), it is likely adulterated. 4. Filter Paper Check: Place a drop on filter paper. Pure oil spreads evenly. Some adulterants like mineral oil or castor oil will leave a translucent mark that doesn't disappear over time.