Search

Your search keyword '"El-Bachiri, A."' showing total 312 results
Start Over Author "El-Bachiri, A."
312 results on '"El-Bachiri, A."'

5. Optimization of Chitin Extraction from Shrimp Shells Using Full Factorial Design Methodology

Author

Lama Rissouli, Ikram Bouziane, Yousra Mdarhri, Hafsa Essebaiy, Hajar Saidi, Mohamed Berradi, Abdesselam Eddaoukhi, Ahmed El Yacoubi, Amine Laglaoui, Abderahman Bouassab, Abderrahim El Bachiri, Mohamed Benicha, and Mohamed Chabbi

Subjects
modeling, water consumption, demineralization, chitin, extraction, minitab, deproteinization, chemical consumption, Ecology, QH540-549.5
Abstract

This study aims to optimize chitin extraction conditions by reducing water and chemical consumption using a two-level factorial design approach. Two variables were studied for the demineralization process: the volume of hydrochloric acid (400 to 500 mL) and the demineralization time (1 to 1.5 hours) at room temperature. For deproteinization, the variables examined were NaOH concentration (0.6 to 1 mol/L) and deproteinization time (1 to 1.5 hours) at 70-80°C. The ash and protein contents were measured to evaluate the efficiency of the demineralization and deproteinization processes, respectively. Minitab 18 software was used for the experimental design.The results showed that the best conditions for extracting high-quality chitin are a demineralization time of 1 hour, an HCl volume of 500 mL, a NaOH concentration of 1 M, and a deproteinization time of 1 hour. These optimal conditions reduce the amount of water, time, and chemicals required for chitin extraction. Compared to previous studies, we significantly reduced the amount of water and chemicals as well as the extraction duration.These results are innovative as they offer a more efficient and sustainable solution for chitin extraction, thus filling a gap in current research by proposing an optimized method. By providing these new data and demonstrating their effectiveness, our research makes a significant contribution to improving chitin extraction techniques, addressing an unmet need in the industrial field.

Published
2024
Full Text
View/download PDF

11. The Phenolic Content of Pistacia lentiscus Leaf Extract and Its Antioxidant and Antidiabetic Properties

Author

Hamza Bouakline, Saliha Bouknana, Mohammed Merzouki, Imane Ziani, Allal Challioui, Mohamed Bnouham, Abdesselam Tahani, and Ali EL Bachiri

Subjects
Technology, Medicine, Science
Abstract

The aims of this study were to determine the polyphenolic profile, to estimate the total phenolic and flavonoid contents, and to evaluate the antioxidant and antidiabetic activities of the extract of Pistacia lentiscus leaves, and the hydroacetonic mixture was employed as an alternative for common solvents in the extraction process. In order to explain the antidiabetic activity, molecular docking has been performed on the main constituents of the leaf extract. The characterization of the extract has been performed by high-performance liquid chromatography (HPLC) leading to the detection of 20 compounds of which gallic acid, ellagic acid, catechin, kaempferol, and quercetin 3-glucoside were identified using authentic standards. The total phenolic and flavonoid contents, assessed using the Folin–Ciocalteu and quercetin methods, were 394.5 ± 0.08 mg gallic acid equivalent/g dry extract (mg GAE/g DE) and 101.2 ± 0.095 mg quercetin equivalent/g dry extract (mg QE/g DE), respectively. On the other hand, the antioxidant activity of leaf extract, quantified by determining the ability to neutralize the free radical DPPH and β-carotene/linoleate model system, reached the values of 0.0027 ± 0.002 mg/mL and 0.128 ± 0.04 mg/mL, respectively. Regarding the antidiabetic activity, based on the inhibition of pancreatic α-amylase activity, a significant inhibition of about 68.20% with an IC50 value of 0.266 mg/mL had been observed. This finding is consistent with the molecular docking study of the main phenolic compounds of the extracts, where a remarkable binding affinity against α-amylase was observed, with values of −7.631 (kcal/mol), −6.818 (kcal/mol), and −5.517 (kcal/mol) for the major compounds catechin, quercetin-3-glucoside, and gallic acid, respectively.

Published
2024
Full Text
View/download PDF

12. EDUCACIÓN EN COMPETENCIAS EMOCIONALES PARA LA DIVERSIDAD AFECTIVO-SEXUAL: SMART EMOTION

Author

Juan Pedro Barrero Caballero and Chaimae Akachach El Bachiri

Subjects
Diversidad Cultural, Diversidad Sexual, Inteligencia Emocional, Orientación Educativa, Education, Special aspects of education, LC8-6691
Abstract

En la actualidad, el interés por la educación emocional desde la orientación educativa se halla en constante crecimiento. Esta da respuesta a las necesidades que presenta el alumnado inmerso en el contexto educativo, desarrollando así sus competencias emocionales y sociales y potenciando su adaptación al medio, así como su desarrollo integral. Esto, sumado a la necesidad de hacer frente a la discriminación por religión, cultura u orientación sexual, hace que en el presente artículo se aborde un recurso web denominado Smart Emotion indicado para alumnado, familias y docentes de Educación Secundaria Obligatoria. A través de este recurso se trabaja la inteligencia emocional a través de cuatro enfoques diferentes (diversidad afectivo-sexual, sostenibilidad, paz y derechos humanos e igualdad de género) y ofreciendo directrices tanto a discentes como a docentes.

Published
2023
Full Text
View/download PDF

37. Synthesis, structural characterization and anticorrosion properties of a new hexafunctional epoxy prepolymer based on urea and phosphorus trichloride for E24 carbon steel in 1.0 M HCl

Author

El-Aouni, Naoual, primary, Dagdag, Omar, additional, El Amri, Abdeslam, additional, Kim, Hansang, additional, Haldhar, Rajesh, additional, Kim, Seong-Cheol, additional, Dkhireche, Nadia, additional, El Bachiri, Abderrahim, additional, Berisha, Avni, additional, and Rafik, Mohamed, additional

Published
2023
Full Text
View/download PDF

41. Optimization of Chitin Extraction from Shrimp Shells Using Full Factorial Design Methodology.

Author

Rissouli, Lama, Bouziane, Ikram, Mdarhri, Yousra, Essebaiy, Hafsa, Saidi, Hajar, Berradi, Mohamed, Eddaoukhi, Abdesselam, El Yacoubi, Ahmed, Laglaoui, Amine, Bouassab, Abderahman, El Bachiri, Abderrahim, Benicha, Mohamed, and Chabbi, Mohamed

Subjects
FACTORIAL experiment designs, CHITIN, DEMINERALIZATION, WATER consumption, EXPERIMENTAL design
Abstract

This study aims to optimize chitin extraction conditions by reducing water and chemical consumption using a twolevel factorial design approach. Two variables were studied for the demineralization process: the volume of hydrochloric acid (400 to 500 mL) and the demineralization time (1 to 1.5 hours) at room temperature. For deproteinization, the variables examined were NaOH concentration (0.6 to 1 mol/L) and deproteinization time (1 to 1.5 hours) at 70-80 °C. The ash and protein contents were measured to evaluate the efficiency of the demineralization and deproteinization processes, respectively. Minitab 18 software was used for the experimental design. The results showed that the best conditions for extracting high-quality chitin are a demineralization time of 1 hour, an HCl volume of 500 mL, a NaOH concentration of 1 M, and a deproteinization time of 1 hour. These optimal conditions reduce the amount of water, time, and chemicals required for chitin extraction. Compared to previous studies, we significantly reduced the amount of water and chemicals as well as the extraction duration. These results are innovative as they offer a more efficient and sustainable solution for chitin extraction, thus filling a gap in current research by proposing an optimized method. By providing these new data and demonstrating their effectiveness, our research makes a significant contribution to improving chitin extraction techniques, addressing an unmet need in the industrial field. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results