What the study found
The study found that volatile compounds in commercial peppermint tea extracts were mainly terpenes, which made up 89% of the total composition. It also reported 16 compounds that had not previously been described in peppermint tea.
Why the authors say this matters
The authors suggest the findings may be due to the analytical approach used, especially the extraction and pre-concentration methods. They also conclude that the chemical properties of peppermint essential oil may not be fully reproduced in homemade tea because the aqueous extract contained a lower proportion of terpenes.
What the researchers tested
The researchers examined volatiles from aqueous extracts of commercial peppermint sachets prepared under conditions similar to homemade tea. They used gas chromatography with flame ionization detection and gas chromatography/mass spectrometry, and isolated volatiles by solid phase extraction with a Porapak Q trap followed by acetone desorption.
What worked and what didn't
Estimated mean values for short- and medium-chain carboxylic acids and ketones were about 50-64 microg kg(-1), while aliphatic alcohols and acyclic hydrocarbons were below 6 microg kg(-1). The major volatiles were terpenes at 275-382 microg kg(-1), and these reached 89% of the total composition; compounds including dodecane, acetoin, acetol, citral, geraniol, and octanoic acid were reported here for the first time in peppermint tea.
What to keep in mind
The abstract does not describe study limitations beyond noting that the findings may reflect the extraction and pre-concentration method used. The results apply to commercial peppermint tea sachets prepared under the study conditions and should not be extended beyond that scope.
Key points
- Terpenes were the main volatile compounds in the peppermint tea extracts, accounting for 89% of the total composition.
- The study reported 16 compounds not previously described in peppermint tea.
- Short- and medium-chain carboxylic acids and ketones were estimated at about 50-64 microg kg(-1).
- Aliphatic alcohols and acyclic hydrocarbons were below 6 microg kg(-1).
- The authors suggest the extraction approach may help explain the detected composition.
Disclosure
- Research title:
- Peppermint tea volatiles were dominated by terpenes
- Authors:
- Liza Ghassan Riachi, Iara Elizabeth Abi-Zaid, Ricardo Felipe Alves Moreira, Carlos María
- Institutions:
- Associação Brasileira de Saúde Coletiva, Associação Brasileira de Saúde Coletiva, Associação Brasileira de Saúde Coletiva, Associação Brasileira de Saúde Coletiva, Centro de Estudos e Pesquisa em Saúde Coletiva, Centro de Estudos e Pesquisa em Saúde Coletiva, Centro de Estudos e Pesquisa em Saúde Coletiva, Centro de Estudos e Pesquisa em Saúde Coletiva
- Publication date:
- 2026-04-08
- OpenAlex record:
- View
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