Abstract
EFFECT OF DRYING ON CHEMICAL COMPONENTS AND ANTIOXIDANT OF ESSENTIAL OIL FROM MENTHA SPICATA LEAVES

Ali Abdella Eltayeib*, Jubralla M. Elhaj, Adam A. Farah and Abdelmonem B. Omer

ABSTRACT

Mint (Mentha spicata L.) is an aromatic member of Lamiaceae family and considered one of the most important herbs traditionally produced in Sudan. Mint was chosen for this study because of its common use in traditional medicine. The aim of the present study was to extract, identify the chemical constituents and antioxidant of Mentha spicata essential oil. The fresh leaves of mint were collected from Omdurman vegetable market and divided into three groups. Group A fresh sample, group B dried under shade and group C dried under sun. The fresh leaves (group A) after the collection immediately brought to the lab. The essential oils from the leaves of mint were obtained by hydrodistillation and analyzed by GC/MS. 24, 23 and 20 components were identified for sample A, B and C respectively. The antioxidant activity was evaluated by 2, 2 Di (4 -tert -octyl phenyl) - 1 - picryl – hydrazyl (DPPH) free radical. The essential oils exhibited a DPPH scavenging activity of 70%, 60%, 60% and 84% for sample A, B, C and the standard respectively.

Keywords: Fresh leaves, shade-dried, sun-dried, mint.


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