Browsing by Author "GHERRAF Noureddine"

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    ECO-EXTRACTION PROCESS OF ESSENTIAL OIL OF THE VEGETAL SPECIES EUCALYPTUS CAMALDULENSIS DEHNH.: PARAMETRIC MODELING AND OPTIMIZATION BY BOX-BEHNKEN PLAN
    (Editura Academiei Romane/Publishing House of the Romanian Academy, 2023-10-23) ABIDI Abdenabi ,a,b,* ,a ,c d and; DJERMANE Mohamed; IEZID Mostepha; GHERRAF Noureddine; PONTIE Maxime
    This study was aimed to implement response surface methodology to optimize the hydrodistillation parameters of the essential oil of the plant species Eucalyptus camaldulensis (RSM). The distillation time, condensation flow rate, and particle size were the desired parameters. To generate factor combinations, a three-factor Box-Behnken design was used. The response surface analysis yielded a linear model, which was used to calculate the top yield of extracted oil based on the optimized conditions. ANOVA shows that the generated polynomial model was highly noteworthy, with R2=0.861. The peak yield was 0.513663% at the optimal conditions, which were 1 mm as particle size, 3.4 mL/min as condensation flow rate, and 210 min as extraction time. The GC/MS analysis revealed the presence of p-cymene (26.22%), spathulenol (16.71%), and 1.8-cineole (14.44%) as major components.
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    Green-extraction of essential oil of the species Ruta chalepensis L.: gas chromatography-mass spectroscopy-infra red analysis and response surface methodology optimization
    (De Gruyter Poland Bogumiła Zuga 32A Str. 01-811 Warsaw, Poland, 2019) DJERMANE Mohamed 1, 1, 2, Noureddine 3; ABIDI Abdenabi; CHROUDA Amani; GHERRAF Noureddine
    The objective of the present study was the optimization of the parameters affecting the hydrodistillation of Ruta chalepensis L. essential oil using response surface design type BoxBehnken. After an appropriate choice of three parameters, 15 experiments were performed leading to a mathematical second-degree model relating the response function (yield of essential oil) to parameters and allowing a good control of the extraction process. The realization of the experiments and data analysis was carried out by response surface methodology (RSM). A deduced second-order polynomial expression was used to determine the optimal conditions necessary to obtain a better essential oil yield. These optimized operating conditions were: a granulometry of 2 mm, a condensation-water flow rate of 3.4 mL/min and an extraction time of 204 min. Analysis of variance (ANOVA) indicates that the generated second-order polynomial model was highly significant with R2=0.9589 and P<0.006. The gas chromatography-mass spectrometry analysis of essential oil extracted from the Ruta chalepensis L. aerial parts revealed the presence of 2-undecanone, 2-nonanone and 2-decanone as major components.