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Abstract  

Eugenol is the main volatile compound extracted oil from clove bud, Syzygium aromaticum L., and used in traditional medicine, as a bactericide, fungicide, anesthetic, and others. Its extraction was performed using hydrodistillation which is the most common extraction technique. Its components and thermal behavior were evaluated using gas chromatography (GC) and differential scanning calorimetry (DSC), which provide a better characterization of these natural compounds. This extracted product was compared to the standard eugenol results. The GC results suggested ~90% eugenol was found in the total extracted oil, and some of its boiling characteristics were 270.1 °C for peak temperature and 244.1 J g−1 for the enthalpy variation.

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Abstract  

Eugenol is an allyl chain-substituted guaiacol in the biosynthesized phenylpropanoid compound class derived from Syzygium aromaticum L. and widely used in folk medicine. Nonetheless, its pharmacological use is limited by some problems, such as instability when exposed to light and high temperature. In order to enhance stability, the eugenol molecule was structurally modified, resulting in eugenyl acetate. The eugenyl acetate’s thermal behavior and crystal structure was then characterized by differential scanning calorimetry (DSC) and X-ray diffraction (XRD) and compared to a commercial sample.

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References 1. Adefegha , S. A. , Oboh , G. ( 2012 ) In vitro inhibition activity of polyphenol-rich extracts from Syzygium aromaticum (L.) Merr. & Perry

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Introduction Eugenitin is a non-volatile chromone derivative which is always found in dried flower buds of Syzygium aromaticum L. (Merr.) & L.M. Perry [ 1 ]. It is also a metabolite of the endophyte Mycoleptodiscus indicus (V.P. Sahni) B

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. (2007): The chemical composition and biological activity of clove essential oil, Eugenia caryophyllata ( Syzygium aromaticum L., Myrtaceae): a short review. Phytother. Res. 21, 501–506. Rouabhia M

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Acta Biologica Hungarica
Authors: Márta Kotormán, Alexandra Varga, Phanindra Babu Kasi, and János Nemcsók

References 1. Adefegha , S. A. , Oboh , G. ( 2012 ) In vitro inhibition activity of polyphenol-rich extracts from Syzygium aromaticum (L.) Merr . & Perry

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