Abstract
Myrtus communis L. is a shrub growing wild in most countries all around the Mediterranean Sea and myrtle leaf oil is useful in the perfumery and pharmaceutical industries. Nowadays, “chemotyped” essential oils are more and more appreciated. Myrtle oil from eastern and central-north Algeria belong to the “α-pinene-cineole” chemotype. In contrast, Moroccan myrtle oil displayed appreciable content of myrtenyl acetate. Therefore, it appeared crucial to investigate the composition of myrtle leaf oil from northwestern Algeria in order to ensure the homogeneity of the composition of Algerian myrtle leaf oil. The chemical composition of 42 oil samples of M. communis isolated from leaves collected in five locations from Tlemcen Province was investigated by gas chromatography (GC) in combination with retention indices, GC-mass spectroscopy, and 13 C nuclear magnetic resonance spectroscopy. Yields ranged between 0.13% and 1.04% (w/w). The chemical composition of the oils was largely dominated by monoterpene hydrocarbons, with α-pinene (24.3-59.0%) and 1,8-cineole (13.2-49.5%) being the major compounds followed by limonene (3.2-19.8%). The 42 compositions were submitted to statistical analyses. The combination of hierarchical cluster analysis and principal component analysis allowed the distinction of two groups, the second group being subdivided into two subgroups. Groups and subgroups were differentiated with respect to their contents of α-pinene and 1,8-cineole and, to a lesser extent, of limonene. This study ensures that Algerian myrtle leaf oil belongs to the “α-pinene-cineole” chemotype which displays various biological activities. The observed homogeneity could be a positive point to join the international market of essential oils.
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Claims 8
Claim · model-written summary
Leaf oil yields ranged from 0.13% to 1.04%.
- Taxon
- Myrtus communis
_in_Athens_on_July_4%2C_2023.jpg?width=60)
Myrtus communist0 - Outcome
- Yieldse0
- Value
- 0.13% and 1.04% (w/w)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_in_Athens_on_July_4%2C_2023.jpg?width=500)
Verbatim
e0“Yields ranged between 0.13% and 1.04% (w/w)”
t0“Myrtus communis”
Claim · model-written summary
The oils were dominated by monoterpene hydrocarbons.
- Taxon
- Myrtus communisMyrtus communist0
- Outcome
- dominated by monoterpene hydrocarbonse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The chemical composition of the oils was largely dominated by monoterpene hydrocarbons”
t0“Myrtus communis”
Claim · model-written summary
α-pinene was a major leaf oil constituent at 24.3-59.0%.
- Taxon
- Myrtus communisMyrtus communist0
- Outcome
- α-pinenee0
- Value
- 24.3-59.0%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“α-pinene (24.3-59.0%) and 1,8-cineole (13.2-49.5%) being the major compounds”
t0“Myrtus communis”
Claim · model-written summary
1,8-cineole was a major leaf oil constituent at 13.2-49.5%.
- Taxon
- Myrtus communisMyrtus communist0
- Outcome
- 1,8-cineolee0
- Value
- 13.2-49.5%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1,8-cineole (13.2-49.5%) being the major compounds”
t0“Myrtus communis”
Claim · model-written summary
Limonene followed the major compounds at 3.2-19.8%.
- Taxon
- Myrtus communisMyrtus communist0
- Outcome
- limonenee0
- Value
- 3.2-19.8%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“followed by limonene (3.2-19.8%)”
t0“Myrtus communis”
Claim · model-written summary
Statistical analysis distinguished two oil composition groups, with the second subdivided into two subgroups.
- Taxon
- Myrtus communisMyrtus communist0
- Outcome
- two groups, the second group being subdivided into two subgroupse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“allowed the distinction of two groups, the second group being subdivided into two subgroups”
t0“Myrtus communis”
Claim · model-written summary
The groups differed in α-pinene and 1,8-cineole content, and less in limonene content.
- Taxon
- Myrtus communisMyrtus communist0
- Material
- Groups and subgroupse0
- Outcome
- contents of α-pinene and 1,8-cineole and, to a lesser extent, of limonenee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Groups and subgroups were differentiated with respect to their contents of α-pinene and 1,8-cineole and, to a lesser extent, of limonene”
t0“Myrtus communis”
Claim · model-written summary
The Algerian leaf oil was assigned to the α-pinene-cineole chemotype.
Verbatim
e0“Algerian myrtle leaf oil belongs to the “α-pinene-cineole” chemotype”