Too Hot to Handle: Chemical Profiling of Six Global Peppercorn Varieties

Tabeeb Howlader; Sharon Barden; Paul Mayer

doi:10.18192/osurj.v5i1.7904

Too Hot to Handle: Chemical Profiling of Six Global Peppercorn Varieties

Authors

Tabeeb Howlader University of Ottawa, Ottawa, ON, Canada
Sharon Barden University of Ottawa, Ottawa, ON, Canada
Paul Mayer University of Ottawa, Ottawa, ON, Canada

DOI:

https://doi.org/10.18192/osurj.v5i1.7904

Abstract

For centuries, peppercorns have been valued for their aroma, spice, and distinctive flavour profiles across many cultures. While piperine is widely recognized as the primary compound responsible for their characteristic spicy taste, less is known about the broader chemical composition that contributes to their flavour, especially across different varieties of peppercorns. The goal of this study is to identify and compare the volatile compounds present in six types of peppercorns: black pepper (Piper nigrum), white pepper (Piper nigrum), red Pondicherry pepper (Piper nigrum), Indian long pepper (Piper longum var. longum), pink peppercorn (Schinus terebinthifolius), and Szechuan pepper (Zanthoxylum bungeanum). Particular attention is given to assessing the distribution of piperine within the Piper species. Ground pepper samples were subjected to supercritical carbon dioxide (sc-CO₂) extraction, and the resulting extracts were diluted in ethyl acetate before analysis using gas chromatography-mass spectrometry (GC-MS). The analysis enabled comparisons between Piper and non-Piper peppercorns regarding their dominant chemical constituents, revealing clear differences between true peppercorns and botanically distinct species. Additionally, the pepper samples were subjected to headspace analysis using solid phase microextraction (SPME) before GC-MS analysis. It was found that while all peppercorn varieties shared many of the same volatile compounds in varying amounts, the false peppercorns contained additional unique compounds not observed in the samples belonging to the Piper genus. These findings underscore the potential role of distinct volatile constituents in shaping aromatic differences among peppercorn varieties.

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Published

2026-06-17

Issue

Vol. 5 No. 1 (2026)

Section

Original Research

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