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All Journal Biodiversitas Journal of Biological Diversity
Pierre Chalard
Université Clermont Auvergne, CNRS, SIGMA Clermont, ICCF, F-63000 Clermont-Ferrand, France
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Chemotypes and antibacterial activity of Matricaria pubescens of Algeria Nour Elhouda Mekhadmi; Messaoud Ramdani; Takia Lograda; Pierre Chalard; Gilles figueredo
Biodiversitas Journal of Biological Diversity Vol. 20 No. 11 (2019)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d201109

Abstract

Abstract. Mekhadmi NE, Ramdani M, Lograda T, Chalard P, Figueredo G. 2019. Chemotypes and antibacterial activity of Matricaria pubescens of Algeria. Biodiversitas 20: 3170-3179. The objectives of this study were to determine the chemical composition and to evaluate the antibacterial activity of Matricaria pubescens L. essential oils from 14 sampling locations in southern Algeria. The extraction of essential oils was carried out by the hydro-distillation; the analysis of chemical composition of essential oil was carried out by GC-MS. Antibacterial activity was performed by disc diffusion method at the undiluted and diluted essential oil (1/1, 1:2, 1:4 and 1:8 v:v of DMSO) against eight species of bacteria (Bacillus cereus, Escherichia coli, Klebsiella pneumoniae, Listeria innocua, Proteus mirabilis, Pseudomonas aeruginosa, Salmonella enterica and Staphylococcus aureus). The results showed that the average yields of essential oils were 0.4 ± 0.27%. A total of 34 components were identified, averaging 99.22 ± 0.8% of the total oils. The main components were ?-ocimene (Z) (47.41 ± 13.67%), ?-pinene (19 ± 7.36%), ?-bulnesene (4.96 ± 10.6%), ocimene-allo (4.46 ± 1.3%), 1-phenyl-penta-2,4-diyne (4.06 ± 5.7%), limonene (3.84 ± 1.8%), caryophyllene oxide (2.36 ± 3.6%) and ?-bisabolene-E (2.08 ± 4.3%). Based on the UPGMA cluster analysis, there were two distinct clades of M. pubescens. This species has a chemical polymorphism with different chemotypes marked in nature. There were four chemotypes identified in the essential oil of M. pubescens in the region studied. The essential oil of M. pubescens has antibacterial activity against eight bacteria tested in a concentration-dependent manner.
Chemical composition and antibacterial activities of Rhus tripartita essential oils from Algeria Khaoula Benlembarek; Takia Lograda; Messaoud Ramdani; Gilles figueredo; Pierre Chalard
Biodiversitas Journal of Biological Diversity Vol. 22 No. 1 (2021)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d220158

Abstract

Abstract. Benlembarek K, Lograda T, Ramdani M, Figueredo G, Chalard P. 2021. Chemical composition and antibacterial activities of Rhus tripartita essential oils from Algeria. Biodiversitas 22: 482-492. The yield of Rhus tripartita essential oils in Algeria is low with an average of 0.16 ± 0.017. The chemical composition of the oils was determined by GC-GC / MS analysis. Seventy-eight compounds were identified with an average of 92.3 ± 26.4% in the total oil. The ?-pinene (58.72 ± 14.45%), ?3-carene (5.21 ± 6.89%), caryophyllene-Z (4.55 ± 4.68%) and ?-pinene (3.07 ± 1 85%) are the major components of the oils of R. tripartita populations. The results reveal a notable difference between the chemical composition of essential oils from male and female populations. The oils of this species are composed of four chemotypes, the ?3-carene, ?-pinene; limonene chemotype characterizes the male populations of Tamanrasset and Boussaada. The ?-pinene - ?3-carene - caryophyllene-Z chemotype characterizes the male populations of M’sila and Mergueb. The female M’sila population is characterized by the ?-pinene - ?3-carene - ?-cadinene chemotype. The remaining populations show the ?-pinene - ?-pinene - caryophyllene-Z chemotype. The evaluation of antibacterial activities reveals that Staphylococcus aureus, Escherichia coli, Proteus mirabilis and Pseudomonas aeruginosa are not sensitive to the essential oils of R. tripartita. In contrast, Enterococcus faecalis is the most sensitive to the oils.
Co-Authors Gilles figueredo Khaoula Benlembarek Messaoud Ramdani Messaoud Ramdani Nour Elhouda Mekhadmi Takia Lograda Takia Lograda