Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Comparative Study
. 2012;13(4):4673-4695.
doi: 10.3390/ijms13044673. Epub 2012 Apr 12.

Comparative study of essential oils extracted from Algerian Myrtus communis L. leaves using microwaves and hydrodistillation

Baya Berka-Zougali  1   2 , Mohamed-Amine Ferhat  2 , Aicha Hassani  2 , Farid Chemat  3 , Karim S Allaf  1   4
Affiliations
Comparative Study

Comparative study of essential oils extracted from Algerian Myrtus communis L. leaves using microwaves and hydrodistillation

Baya Berka-Zougali et al. Int J Mol Sci. 2012.

Abstract

Two different extraction methods were used for a comparative study of algerian myrtle leaf essential oils: solvent-free-microwave-extraction (SFME) and conventional hydrodistillation (HD). Essential oils analyzed by GC and GC-MS presented 51 components constituting 97.71 and 97.39% of the total oils, respectively. Solvent-Free-Microwave-Extract Essential oils SFME-EO were richer in oxygenated compounds. Their major compounds were 1,8-cineole, followed by α-pinene as against α-pinene, followed by 1,8-cineole for HD. Their antimicrobial activity was investigated on 12 microorganisms. The antioxidant activities were studied with the 2,2-diphenyl-1-picrylhydrazyl (DPPH(•)) radical scavenging method. Generally, both essential oils showed high antimicrobial and weak antioxidant activities. Microstructure analyses were also undertaken on the solid residue of myrtle leaves by Scanning Electronic Microscopy (SEM); it showed that the SFME-cellular structure undergoes significant modifications compared to the conventional HD residual solid. Comparison between hydrodistillation and SFME presented numerous distinctions. Several advantages with SFME were observed: faster kinetics and higher efficiency with similar yields: 0.32% dry basis, in 30 min as against 180 min for HD.

Keywords: Myrtus communis L.; antimicrobial activity; antioxidant activity; essential oils; hydrodistillation; solvent free microwave extraction SFME.

PubMed Disclaimer

Figures

Figure 1
Figure 1
Kinetics of essential oil extracted by hydrodistillation (HD-EO) and Solvent-Free-Microwave-Extraction (SFME-EO) from fresh leaves of myrtle.
Figure 2
Figure 2
Total oxygenated compounds and non-oxygenated compounds obtained by hydrodistillation (HD-EO) and Solvent-Free-Microwave-Extraction (SFME-EO) from fresh leaves of myrtle.
Figure 3
Figure 3
Processing and assessment protocol.
Figure 4
Figure 4
Microwave—Clevenger.
See this image and copyright information in PMC

References

    1. Snow N., McFadden J., Evans T.M., Salywon A.M., Wojciechowski M.F., Wilson P.G. Morphological and molecular evidence of polyphyly in rhodomyrtus (Myrtaceae: Myrteae) Syst. Bot. 2011;36:390–404.
    1. Barboni T., Venturini N., Paolini J., Desjobert J.M., Chiaramonti N., Costa J. Characterisation of volatiles and polyphenols for quality assessment of alcoholic beverages prepared from Corsican Myrtus communis berries. Food Chem. 2010;122:1304–1312.
    1. Özek T., Demirci B., Baser K.H.C. Chemical composition of tukish myrtle oil. J. Essent. Oil Res. 2000;12:541–544.
    1. Berka-Zougali B., Hassani A., Besombes C., Allaf K. Extraction of essential oils from Algerian myrtle leaves using instant controlled pressure drop technology. J. Chromatogr. A. 2010;1217:6134–6142. - PubMed
    1. Aydin C., Özcan M.M. Determination of nutritional and physical properties of myrtle (Myrtus communis L.) fruits growing wild in Turkey. J. Food Eng. 2007;79:453–458.

Publication types

LinkOut - more resources