Piper nigrum Raw Material & Plant Part
The scientific name is Piper nigrum L., family Piperaceae. The part used is the fruit, the peppercorn, harvested unripe and sun-dried until the outer layer darkens and wrinkles. This is black pepper. White pepper comes from fully ripe fruit with the outer layer removed, and green pepper is preserved unripe fruit, so the three are different materials with different flavor and color.
Other plants share the name. Long pepper (Piper longum) and cubeb (Piper cubeba) are related species with their own profiles, and pink pepper (Schinus) belongs to an unrelated family. Leaves, stems and roots of the pepper vine are not used.
The heat comes from piperine, a pungent amide alkaloid, and the aroma from a volatile oil rich in terpenes. Both are held inside the fruit, and milling releases the volatile oil, so freshly ground pepper is aromatic and the aroma fades with time and air exposure. The powder is therefore sensitive to storage in a way that a dense extract is not.
Fineness changes perceived heat: finer particles release more flavor faster.
In a specification, black pepper powder should state that it is black pepper in words, because white and green pepper are different materials. The words dried unripe fruit, the species name and the mesh make the raw material unambiguous, and a buyer can add a limit on the whole-peppercorn origin if a particular grade is wanted.












