How the black pepper seeds are adulterated?
Black pepper seeds are adulterated with papaya seeds, light black pepper seeds. Coating of black pepper with mineral oil is also a type of adulteration.
- Papaya seeds can be separated from pepper as they are shrunken, oval in shape and greenish brown or brownish black in color.
- Float the sample of black pepper in alcohol. The black pepper berries sink while the papaya seeds and light black pepper will float.
- Black pepper when coated with mineral oil gives kerosene like smell.