Chemical composition of Origanum majorana, Mentha spicata and Ocimum basilicum essential oils and their impact on Spodopteralittoralis: toxicity and immune response.

ABSTRACT:

Introduction

This study presents the essential oils (EOs) derived from Origanum majorana L. (Marjoram), Mentha spicata L. (Spearmint) and Ocimum basilicum L. (Basil), which are explored for their insecticidal potential against Spodoptera littoralis larvae.

Methods

EOs were extracted and analyzed using gas chromatography-mass spectrometry (GC-MS), identifying 47, 37 and 27 compounds in O. majorana, M. spicata and O. basilicum, respectively.

Results

Major constituents include terpinen-4-ol (25.47 %) and sabinene (18.3%) in O. majorana, piperitenone oxide (43.83 %) in M. spicata, and methyl (E)-cinnamate (48.69 %) in O. basilicum. Toxicity assays demonstrated significant larvicidal activity with LC₅₀

SUBMITTER: Askar M 

PROVIDER: S-EPMC12832627 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature