Evaluation of Essential oil Components of Some Medicinal plant Mentha piperita L. Ecotypes in Different Harvesting and Drying Methods

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Document Type : Research Paper

Authors

1 Department of Horticultural science, Faculty of Agriculture and Natural resources, University of Mohaghegh Ardabili, Ardabil, Iran.

2 Department of Horticultural science, Faculty of Agriculture and Natural resources, University of Mohaghegh Ardabili, Ardabil, Iran

3 Department of Horticultural science, Faculty of Agriculture and Natural resources, University of Lorestan, Khorramabad, Lorestan, Iran

Abstract

Peppermint (Mentha piperita L.), with numerous medicinal properties is one of the most important plants from Lamiaceae family .These plants produce a major and diverse group of secondary metabolites. Main purpose of this research is to evaluation of essential oil components of some medicinal plant Mentha piperita L. ecotypes in different harvesting and drying methods.
In this research, the diversity of essential oil compounds in different methods of harvesting and drying in different (oven- shade) accesion of peppermint plants was investigated. This experiment was conducted in University of Mohaghegh Ardabili climatic condition.in 2023, based on randomized complete block design with three replications. Their essential oils were extracted by using of Clevenger apparatus and were analyzed by GC-MS.
Results: Analysis of variance showed that there were significant differences among studied traits. In total, 25 compounds were identified, and the largest amount of compounds was found in the Zanjan accession in the harvesting and drying method 50% flowering-shade and the highest number of compounds was observed in the Noorabad accession. The most important components of peppermint essential oil were: Limonene (0.23-29.45%), Menthol (0.30-30.16%), Pulegone (0.35-13.72), Ledol (0.20-3.86%) and Terpinol (0.21-2.85%). Maximum correlation was shown between Naphthalene and Aromadendrene (0.80). Cluster analysis, classified the treatments into four major groups.
Conclusion: The results suggested that Mentha piperita L accessions of Iran had a high genetic diversity that can be used in the breeding programs. The considerable variations were observed among accessions in viewpoint of number, type and amount of essential oil compounds.

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JOURNAL OF AGRICULTURAL SCIENCE AND SUSTAINABLE PRODUCTION

Articles in Press, Accepted Manuscript
Available Online from 20 January 2026

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