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Phytochemical Investigations, Antioxidant and Insecticidal Properties of Essential Oil and Extracts from the Aerial Parts of Pelargonium graveolens from Morocco.

Authors :
M'hamdi Z
Davì F
Elhourri M
Amechrouq A
Mondello F
Cacciola F
Laganà Vinci R
Mondello L
Miceli N
Taviano MF
Source :
Molecules (Basel, Switzerland) [Molecules] 2024 Aug 26; Vol. 29 (17). Date of Electronic Publication: 2024 Aug 26.
Publication Year :
2024

Abstract

The essential oil and the aqueous and ethanolic extracts obtained from the aerial parts of Pelargonium graveolens cultivated in Morocco were studied for their antioxidant and insecticidal activity against rice weevils ( Sitophylus oryzae ). The total phenolic content of the extracts was determined by a spectrophotometric method and the phenolic compounds were extensively characterized by HPLC-PDA/ESI-MS. To evaluate antioxidant potential, three in vitro assays were used. In the DPPH test, the ethanolic extract was the most active, followed by the aqueous extract and the essential oil. In the reducing power assay, excellent activity was highlighted for both extracts, while in the Fe <superscript>2+</superscript> chelating activity assay, weak activity was observed for both the essential oil and the ethanolic extract and no activity for the aqueous extract. Concerning insecticide activity, the toxicity of the essential oil and the extracts was tested against rice weevils; the lethal concentrations LC <subscript>50</subscript> and LC <subscript>99</subscript> were determined, as well as the lethal time required for the death of 50% (LT <subscript>50</subscript> ) and 99% (LT <subscript>99</subscript> ) of the weevils. The essential oil had the highest activity; 100% mortality of S. oryzae was observed around 5, 9, and 8 days for the essential oil and the aqueous and ethanolic extracts, respectively.

Details

Language :
English
ISSN :
1420-3049
Volume :
29
Issue :
17
Database :
MEDLINE
Journal :
Molecules (Basel, Switzerland)
Publication Type :
Academic Journal
Accession number :
39274883
Full Text :
https://doi.org/10.3390/molecules29174036