Percorrer por autor "Sakouhi, Faouzi"
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- Green versus conventional extraction of tunisian carob pulp: polyphenols, antioxidant capacity, and chemometric insightsPublication . Saadi, Chaima; Sakouhi, Faouzi; Chami, Mohamad Ali El; Cáceres-Jiménez, Salud; Moreno-Ortega, Alicia; Boukhchina, Sadok; Moreno-Rojas, José Manuel; Rodríguez Solana, RaquelCarob pulp is a Mediterranean by-product highlighted as an important source of bioactive compounds potentially used in different industrial applications. This study compares extraction methods using both conventional (maceration-M, organic solvents and water) and non-conventional green techniques (ultrasound-assisted extraction -UAE, and natural deep eutectic solvents -NADES). Chemometric tools were applied to analyze the polyphenol profile by HPLC–HRMS and assess bioactive potential measured by Folin-Ciocalteu, DPPH and ABTS assays of carob pulp from two regions in Tunisia (North and South). Among the factors studied (extraction technique, solvent, and geographical location), the solvent contributed to the highest variability in the composition of the carob. The highest yield of total phenolics was achieved using the conventional ethanol 75 %-M method (5023.92 µg/g) and the green water-UAE (5008.32 µg/g), followed by the NADES (lactic acid: sodium acetate, 3:1) method (3117.23 µg/g). The latter method was notable for its high content of flavonols, hydrolizable tannins, and antioxidant potential. Significant differences in phenolic content were observed between the two Tunisian locations, depending on the extraction method, with generally higher concentrations found in extracts from the southern region. The chemometric analysis confirms the effectiveness of the proposed green extraction methods as powerful and efficient tools for bioactive compound extraction from carob pulp, achieving similar, improved or highly selective phenolic recoveries when compared to the conventional methods.
- Quality parameters and lipid composition of oil extracted from spent coffee grounds: A promising alternative to vegetable oils used for consumption and cosmetic purposesPublication . Sakouhi, Faouzi; Saadi, Chaima; Omrani, Ikbel; Boukhchina, Sadok; Rodríguez Solana, RaquelCoffee grounds are the most commonly generated daily waste in the world, raising numerous questions regarding their proper management and their environmental impact. The present study focuses on the physical and chemical characterization of oil extracted from spent coffee grounds (SCG), with the aim of valorizing this by-product as a potential source for oil production. The results obtained from the analysis of SCG oil were also compared to those of some edible oils (soybean, corn, and sunflower oils) and cosmetic oils (lentisc, sweet almond, and castor oils). The results revealed that spent coffee waste yielded an important amount of oil, specifically 17.19%, as compared to corn (4.31%) and soybean (19.52%) seeds. Regarding the fatty acids composition of SCG oil, eight components were identified, with a high percentage of polyunsaturated fatty acids accounting for more than 45% of total fatty acids. The phytosterols composition of SCG oil revealed the presence of seven components, with beta-sitosterol being the predominant one. The tocopherol analysis showed that SCG oil contained only alpha and beta isomers, with beta-tocopherol being the dominant form at over 68%. These findings accentuate the potential of spent coffee waste as a promising alternative for oil production and open up new applications for SCG oil, such as in the food industry, pharmaceutical applications, and cosmetics.Practical Application: Given the significant increase in the demand for vegetable oils, the oil industry has recently begun to explore new plant matrices, particularly those having low costs. SCG are the most commonly generated daily by-product in the world. The present investigation aims to characterize and valorize the oil extracted from SCG. The obtained results revealed the potential of SCG as a promising alternative for oil production. Consequently, valorizing spent coffee waste as a natural by-product for oil production can be an ideal solution to address numerous issues related to its proper management and its environmental impact. Hence, the oil industry can promote spent coffee waste, cheapest by-products, as a promising alternative for oil production. Moreover, the present investigation represents a commendable model of the circular economy since the remaining waste obtained after extracting lipids from the coffee grounds waste can be used as natural fertilizer rich in protein for plant development. In Tunisia, the annual quantity of spent coffee grounds (SCG) is estimated to reach 40 000 tons. In the current investigation, a Soxhlet extractor was used to extract oil from SCG. GC-MS and HPLC techniques were utilized to characterize the fatty acids, phytosterols, and tocopherols present in the SCG oil. The results obtained open up new applications for SCG oil. image
- Quality parameters and lipid composition of oil extracted from spent coffee grounds: A promising alternative to vegetable oils used for consumption and cosmetic purposesPublication . Sakouhi, Faouzi; Saadi, Chaima; Omrani, Ikbel; Boukhchina, Sadok; Rodríguez Solana, RaquelCoffee grounds are the most commonly generated daily waste in the world, raising numerous questions regarding their proper management and their environmental impact. The present study focuses on the physical and chemical characterization of oil extracted from spent coffee grounds (SCG), with the aim of valorizing this by-product as a potential source for oil production. The results obtained from the analysis of SCG oil were also compared to those of some edible oils (soybean, corn, and sunflower oils) and cosmetic oils (lentisc, sweet almond, and castor oils). The results revealed that spent coffee waste yielded an important amount of oil, specifically 17.19%, as compared to corn (4.31%) and soybean (19.52%) seeds. Regarding the fatty acids composition of SCG oil, eight components were identified, with a high percentage of polyunsaturated fatty acids accounting for more than 45% of total fatty acids. The phytosterols composition of SCG oil revealed the presence of seven components, with beta-sitosterol being the predominant one. The tocopherol analysis showed that SCG oil contained only alpha and beta isomers, with beta-tocopherol being the dominant form at over 68%. These findings accentuate the potential of spent coffee waste as a promising alternative for oil production and open up new applications for SCG oil, such as in the food industry, pharmaceutical applications, and cosmetics.Practical Application: Given the significant increase in the demand for vegetable oils, the oil industry has recently begun to explore new plant matrices, particularly those having low costs. SCG are the most commonly generated daily by-product in the world. The present investigation aims to characterize and valorize the oil extracted from SCG. The obtained results revealed the potential of SCG as a promising alternative for oil production. Consequently, valorizing spent coffee waste as a natural by-product for oil production can be an ideal solution to address numerous issues related to its proper management and its environmental impact. Hence, the oil industry can promote spent coffee waste, cheapest by-products, as a promising alternative for oil production. Moreover, the present investigation represents a commendable model of the circular economy since the remaining waste obtained after extracting lipids from the coffee grounds waste can be used as natural fertilizer rich in protein for plant development. In Tunisia, the annual quantity of spent coffee grounds (SCG) is estimated to reach 40 000 tons. In the current investigation, a Soxhlet extractor was used to extract oil from SCG. GC-MS and HPLC techniques were utilized to characterize the fatty acids, phytosterols, and tocopherols present in the SCG oil. The results obtained open up new applications for SCG oil. image
- Quality parameters and lipid composition of oil extracted from spent coffee grounds: a promising alternative to vegetable oils used for consumption and cosmetic purposesPublication . Sakouhi, Faouzi; Saadi, Chaima; Omrani, Ikbel; BOUKHCHINA, SADOK; Rodríguez Solana, RaquelCoffee grounds are the most commonly generated daily waste in the world, raising numerous questions regarding their proper management and their environmental impact. The present study focuses on the physical and chemical characterization of oil extracted from spent coffee grounds (SCG), with the aim of valorizing this by-product as a potential source for oil production. The results obtained from the analysis of SCG oil were also compared to those of some edible oils (soybean, corn, and sunflower oils) and cosmetic oils (lentisc, sweet almond, and castor oils). The results revealed that spent coffee waste yielded an important amount of oil, specifically 17.19%, as compared to corn (4.31%) and soybean (19.52%) seeds. Regarding the fatty acids composition of SCG oil, eight components were identified, with a high percentage of polyunsaturated fatty acids accounting for more than 45% of total fatty acids. The phytosterols composition of SCG oil revealed the presence of seven components, with beta-sitosterol being the predominant one. The tocopherol analysis showed that SCG oil contained only alpha and beta isomers, with beta-tocopherol being the dominant form at over 68%. These findings accentuate the potential of spent coffee waste as a promising alternative for oil production and open up new applications for SCG oil, such as in the food industry, pharmaceutical applications, and cosmetics.Practical Application: Given the significant increase in the demand for vegetable oils, the oil industry has recently begun to explore new plant matrices, particularly those having low costs. SCG are the most commonly generated daily by-product in the world. The present investigation aims to characterize and valorize the oil extracted from SCG. The obtained results revealed the potential of SCG as a promising alternative for oil production. Consequently, valorizing spent coffee waste as a natural by-product for oil production can be an ideal solution to address numerous issues related to its proper management and its environmental impact. Hence, the oil industry can promote spent coffee waste, cheapest by-products, as a promising alternative for oil production. Moreover, the present investigation represents a commendable model of the circular economy since the remaining waste obtained after extracting lipids from the coffee grounds waste can be used as natural fertilizer rich in protein for plant development. In Tunisia, the annual quantity of spent coffee grounds (SCG) is estimated to reach 40 000 tons. In the current investigation, a Soxhlet extractor was used to extract oil from SCG. GC-MS and HPLC techniques were utilized to characterize the fatty acids, phytosterols, and tocopherols present in the SCG oil. The results obtained open up new applications for SCG oil. image
- Quality parameters and lipid composition of oil extracted from spent coffee grounds: A promising alternative to vegetable oils used for consumption and cosmetic purposesPublication . Sakouhi, Faouzi; Saadi, Chaima; Omrani, Ikbel; Boukhchina, Sadok; Rodríguez Solana, RaquelCoffee grounds are the most commonly generated daily waste in the world, raising numerous questions regarding their proper management and their environmental impact. The present study focuses on the physical and chemical characterization of oil extracted from spent coffee grounds (SCG), with the aim of valorizing this by-product as a potential source for oil production. The results obtained from the analysis of SCG oil were also compared to those of some edible oils (soybean, corn, and sunflower oils) and cosmetic oils (lentisc, sweet almond, and castor oils). The results revealed that spent coffee waste yielded an important amount of oil, specifically 17.19%, as compared to corn (4.31%) and soybean (19.52%) seeds. Regarding the fatty acids composition of SCG oil, eight components were identified, with a high percentage of polyunsaturated fatty acids accounting for more than 45% of total fatty acids. The phytosterols composition of SCG oil revealed the presence of seven components, with beta-sitosterol being the predominant one. The tocopherol analysis showed that SCG oil contained only alpha and beta isomers, with beta-tocopherol being the dominant form at over 68%. These findings accentuate the potential of spent coffee waste as a promising alternative for oil production and open up new applications for SCG oil, such as in the food industry, pharmaceutical applications, and cosmetics.Practical Application: Given the significant increase in the demand for vegetable oils, the oil industry has recently begun to explore new plant matrices, particularly those having low costs. SCG are the most commonly generated daily by-product in the world. The present investigation aims to characterize and valorize the oil extracted from SCG. The obtained results revealed the potential of SCG as a promising alternative for oil production. Consequently, valorizing spent coffee waste as a natural by-product for oil production can be an ideal solution to address numerous issues related to its proper management and its environmental impact. Hence, the oil industry can promote spent coffee waste, cheapest by-products, as a promising alternative for oil production. Moreover, the present investigation represents a commendable model of the circular economy since the remaining waste obtained after extracting lipids from the coffee grounds waste can be used as natural fertilizer rich in protein for plant development. In Tunisia, the annual quantity of spent coffee grounds (SCG) is estimated to reach 40 000 tons. In the current investigation, a Soxhlet extractor was used to extract oil from SCG. GC-MS and HPLC techniques were utilized to characterize the fatty acids, phytosterols, and tocopherols present in the SCG oil. The results obtained open up new applications for SCG oil. image