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Boumahdi, Yamina; Moghrani, Houria; Nasrallah, Noureddine; Ouarek, Salima; Maachi, Rachida
Flavour and fragrance journal, January 2021, 2021-01-00, 20210101, Volume: 36, Issue: 1Journal Article
Essential oils (EOs) from anise seeds (Pimpinella anisum) collected in the Algerian region were extracted by microwave‐assisted hydrodistillation (MAHD) and hydrodistillation (HD). The oil yield (%), chemical composition, energetic consumption and the antimicrobial properties were evaluated of the obtained EO. The yields obtained by both processes were 2.81 ± 0.01% for 90 minutes and 3.30 ± 0.05% for 330 minutes for MAHD and HD, respectively. The determination of the chemical composition of EOs by GC‐MS revealed the presence of a majority compound, trans‐anethole 81.52% and 91.31% for MAHD and HD, respectively. The other main compounds present in the oils for MAHD and HD were, respectively: methyl chavicol (estragole) (0.63%‐1.39%), cis‐anethole (0.23%‐0.34%), anisaldehyde (1.1%‐1.57%), anisyl methyl ketone (0.28%‐0.13%), trans‐methyl isoellgenol (0.31%‐0.17%), γ‐himachalene (0.5%‐0.36%), trans‐pseudoisoeugenyl 2‐methylbutyrate (6.53%‐2.53%) and epoxy‐pseudoisoeugenyl 2‐methylbutyrate (2.01%‐0.56%). The EO obtained by MAHD detected other compounds, fenchone 0.41%, limonene 0.68%, cis‐jasmolacatone extra C 0.41%, trans‐isolongifolanone 0.2% and α‐himachalene 0.16%. The energetic consumption by MAHD was significantly less than HD. Theoretical data from mathematical modelling were compared with practical data, and the coefficient of determination was between 0.93 and 0.97. The sensibility of bacterial strains to the essential oil obtained by MAHD is marked relatively to that obtained by HD, and for the sensibility of fungal strains, it was conserved. The MAHD process revealed a good yield of anise seeds EOs while reducing extraction time and energetic consumption. The EO extracted by this process revealed the presence of other compounds while improving antibacterial activity. Comparative study of two processes of essential oil extraction of Algerian Pimpinella anisum seeds (Anise seeds). The processes are microwave‐assisted hydrodistillation and hydrodistillation. Chemical composition and the antimicrobial properties were evaluated of the obtained EO.
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