Chemical Composition, Anti-radical and Antibacterial Activities of Essential Oils from Needles of Pinus halepensis Mill., P. pinaster Aiton., and P. pinea L

Foued Aloui1 Sylvo-Pastoral Resources Laboratory, University of Jendouba, Sylvo-Pastoral Institute of Tabarka, P.O. box 345, 8110Tabarka, TunisiaCorrespondence[email protected]

https://orcid.org/0000-0001-6817-0135

Mokhtar Baraket2 Laboratory of Management and Valorization of Forest Resources (LR11INRGREF0), National Research Institute of Rural Engineering, Water and Forests, Carthage University, Ariana, Tunisia

Saber Jedidi1 Sylvo-Pastoral Resources Laboratory, University of Jendouba, Sylvo-Pastoral Institute of Tabarka, P.O. box 345, 8110Tabarka, Tunisia

Karim Hosni3 National Institute for Research and Physicochemical Analysis, Sidi Thabet, 2020Ariana, Tunisia

Rahma Bouchnak1 Sylvo-Pastoral Resources Laboratory, University of Jendouba, Sylvo-Pastoral Institute of Tabarka, P.O. box 345, 8110Tabarka, Tunisia;4 Faculty of sciences of Tunis, University of Tunis El Manar, Tunisia

Oumaima Salhi1 Sylvo-Pastoral Resources Laboratory, University of Jendouba, Sylvo-Pastoral Institute of Tabarka, P.O. box 345, 8110Tabarka, Tunisia;4 Faculty of sciences of Tunis, University of Tunis El Manar, Tunisia

Nouri Jdaidi1 Sylvo-Pastoral Resources Laboratory, University of Jendouba, Sylvo-Pastoral Institute of Tabarka, P.O. box 345, 8110Tabarka, Tunisia

Houcine Selmi1 Sylvo-Pastoral Resources Laboratory, University of Jendouba, Sylvo-Pastoral Institute of Tabarka, P.O. box 345, 8110Tabarka, Tunisia

Hanene Ghazghazi2 Laboratory of Management and Valorization of Forest Resources (LR11INRGREF0), National Research Institute of Rural Engineering, Water and Forests, Carthage University, Ariana, Tunisia

Ayda Khadhri4 Faculty of sciences of Tunis, University of Tunis El Manar, Tunisia

Chaabane Abbes1 Sylvo-Pastoral Resources Laboratory, University of Jendouba, Sylvo-Pastoral Institute of Tabarka, P.O. box 345, 8110Tabarka, Tunisia

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Abstract

The present study aims to study the chemical composition of the essential oils from needles of three pine species: Pinus halepensis Mill., P. pinaster Aiton. and P. pinea L., and the evaluation of their in vitro anti-radical and antibacterial properties. GC-MS analysis showed that the essential oils were characterized by the abundance of monoterpene hydrocarbons (61.55-86.72 %). α-pinene, β-pinene, α-terpinolene, α-fenchene, and β-caryophyllene were the most plentiful components in P. halepensis. Limonene, α-pinene, and β-caryophyllene were particularly abundant in P. pinea and P. pinaster essential oils. The strongest DPPH-radical scavenging activity (IC₅₀ = 73.03 μg/mL) was observed for the limonene-rich essential oils of P. pinea. The three essential oils were effective against the Gram+ bacteria Bacillus subtilis and Listeria monocytogenes and the Gram- bacteria Salmonella enterica and Escherichia coli. These results suggest that P. halepensis, P. pinaster, and P. pinea could constitute a consolidated source of natural bioactive ingredients with anti-radical and antimicrobial properties.

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Chemical Composition, Anti-radical and Antibacterial Activities of Essential Oils from Needles of Pinus halepensis Mill., P. pinaster Aiton., and P. pinea L

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Chemical Composition, Anti-radical and Antibacterial Activities of Essential Oils from Needles of Pinus halepensis Mill., P. pinaster Aiton., and P. pinea L

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