منصة إيفاد العلمية

د.إلهام بن عمر

إرسال رسالة

التخصص: هندسة كيميائية

الجامعة: الوادي -الجزائر

النقاط:

معامل الإنتاج البحثي

الخبرات العلمية

NanoparticlesChitosanChitosan Nanoparticles,Material ,Characterization,Materials Research,Nanomaterials,Metal Oxides,Metals,Zinc Oxide

الأبحاث المنشورة

Sol-Gel Synthesis of ZnO Nanoparticles Using Different Chitosan Sources: Effects on Antibacterial Activity and Photocatalytic Degradation of AZO Dye

المجلة: Catalysts

سنة النشر: 2022

تاريخ النشر: 2022-12-08

Chitosan extraction from Amanita phalloides: yield, crystallinity, degree of deacetylation, azo dye removal and antibacterial properties

المجلة: Frontiers in Chemistry

سنة النشر: 2024

تاريخ النشر: 2024-06-19

Chitosan, a biopolymer obtained from chitin, is known for its remarkable adsorption abilities for dyes, drugs, and fats, and its diverse array of antibacterial characteristics. This study explores the extraction and characterization of chitosan from the mycelium of Amanita phalloides. The moisture content, ash content, water binding capacity, fat binding capacity, and degree of deacetylation of the extracted chitosan were determined. The chitosan exhibited a high yield of 70%, crystallinity of 49.07%, a degree of deacetylation of 86%, and potent antimicrobial properties against both Gram-negative and Gram-positive bacteria. The study also examined the adsorption capabilities of chitosan to remove methylene blue (MB) dye by analysing specific factors like pH, reaction time, and MB concentration using the response surface model. The highest degree of MB dye removal was 91.6% at a pH of 6, a reaction time of around 60 min and an initial dye concentration of 16 ppm. This experimental design can be applied for chitosan adsorption of other organic compounds such as dyes, proteins, drugs, and fats.

A Systematic Review of Synthesis MgO Nanoparticles and Their Applications

المجلة: Journal of the Turkish Chemical Society Section A Chemistry

سنة النشر: 2024

تاريخ النشر: 2024-02-28

Recently, nanoscale biotechnology has emerged as an essential field of contemporary science and a new era in the study of materials. It draws the attention of many scientists from all over the world due to its versatility in various fields. Many physical, chemical, and biological processes are used to create biomaterials. Among the materials of interest is magnesium oxide (MgO), which can be widely used in medical and biotechnological applications due to its non-toxicity and environmental friendliness. This review article discusses various methods for the synthesis of magnesium oxide nanoparticles (MgONPs), with particular emphasis on recent developments and applications of these nanomaterials.

Enhancing oxidant and dye scavenging through MgO-based chitosan nanoparticles for potential antioxidant coatings and efficient photocatalysts

المجلة: Biomass Conversion and Biorefinery

سنة النشر: 2024

تاريخ النشر: 2023-09-18

Use of Insect-Derived Chitosan for the Removal of Methylene Blue Dye from Wastewater: Process Optimization Using a Central Composite Design

المجلة: Materials

سنة النشر: 2023

تاريخ النشر: 2023-06-17

Insects are a readily available source of chitosan due to their high reproductive rates, ease of breeding, and resistance to changes in their ecosystem. This study aimed to extract chitosan from several widespread insects: Blaps lethifera (CS-BL), Pimelia fernandezlopezi (CS-PF), and Musca domestica (CS-MD). The study was also extended to using the obtained chitosans in removing methylene blue dye (MB) from wastewater. The source of the chitosan, the initial concentration of MB dye, and the reaction time were chosen as the working parameters. The experiments were designed using a central composite design (CCD) based on the dye removal efficiency as the response variable. The experimental work and statistical calculation of the CCD showed that the dye removal efficiency ranged from 35.9% to 88.7% for CS-BL, from 18.8% to 47.1% for CS-PF, and from 10.3% to 29.0% for CSMD at an initial MB concentration of 12.79 mg/L. The highest methylene blue dye removal efficiency was 88.7% for CS-BL at a reaction time of 120 min. This indicates that the extraction of chitosan from insects (Blaps lethifera) and its application in dye removal is a promising, environmentally friendly, economical, biodegradable, and cost-effective process. Furthermore, the CCD is a statistical experimental design technique that can be used to optimize process variables for removing other organic pollutants using chitosan

Nanomaterials based on chitosan for skin regeneration: an update

المجلة: International Journal of Surgery

سنة النشر: 2023

تاريخ النشر: 2023-03-24

Skin is composed of several layers essential to its response and function to injury: hypodermis, dermis, and epidermis. Damaged skin tissue spontaneously starts the wound-healing process when injured. Inflammation, hemostasis, remodeling, and proliferation (or scar tissue development) stages make up the spontaneous and dynamic repair process that occurs in the wounded tissue during wound healing. Hemostasis is the initial stage following skin injuries, and bleeding is one of the main reasons for early demise. By replacing tissue that has been destroyed and repairing damaged tissue, wound healing attempts to mend the damaged tissue.

Biosynthesis MgO and ZnO nanoparticles using chitosan extracted from Pimelia Payraudi Latreille for antibacterial applications

المجلة: World Journal of Microbiology and Biotechnology

سنة النشر: 2022

تاريخ النشر: 2024-11-21

Chitosan (CS) is one of the most abundant biopolymers in nature with superior properties such as biocompatibility, biodegradability, lack of toxicity, antimicrobial activity, acceleration of wound healing, and stimulation of the immune system. In this study, chitosan was extracted from the exoskeletons of beetles (Pimelia payraudi latreille) and then used for the biosynthesis of highly pure MgO NPs and ZnO NPs by a facile greener route. The extracted chitosan exhibited excellent physicochemical properties, including high extraction yield (39%), high degree of deacetylation (90%), low ash content (1%), high fat-binding capacity (366%), and unusual crystallinity index (51%). The MgO NPs and ZnO NPs exhibited a spherical morphology with crystallite sizes of 17 nm and 29 nm, particle sizes of about 20–70 nm and 30–60 nm, and band gap energies of 4.43 and 3.34 eV, respectively. Antibacterial assays showed that the extracted chitosan exhibited high antibacterial activity against Gram-positive and -negative bacteria, while ZnO NPs showed much stronger antibacterial activity against Gram-positive bacteria than against Gram-negative bacteria. For MgO NPs, the antibacterial activity against Gram-positive bacteria was lower than against Gram-negative bacteria. The results suggest that the synthesized MgO NPs and ZnO NPs are excellent antibacterial agents for therapeutic applications.

Commentary on 'Potential of nanoemulsions for accelerated wound healing: innovative strategies'

المجلة: International Journal of Surgery

سنة النشر: 2023

تاريخ النشر: 2023-09-21

Potential of nanoemulsions for accelerated wound healing: innovative strategies

Osteoporosis therapy using nanoparticles: A review

المجلة: Annals of Medicine and Surgery

سنة النشر: 2023

تاريخ النشر: 2023-11-01

Osteoporosis, characterized by low bone density and increased risk of fractures, represents a major healthcare challenge. Antiresorptive and anabolic medications are now used to treat osteoporosis in an effort to reduce bone loss and increase bone mass. Innovative methods are required since current therapies have drawbacks. Promising options for improving bone health and medicine delivery are provided by nanotechnology. Bisphosphonates with tetracyclines and oligopeptides, among other compounds that target the bone, make it easier to provide a particular medication to bone tissue. Additionally, nanocarriers are essential for the administration of both organic and inorganic nanoparticles in the treatment of osteoporosis. Drug encapsulation and controlled release may be done in a variety of ways using organic nanoparticles. Inorganic nanoparticles have special qualities that help in medication transport and bone repair. This review explores the potential of nanoparticle-based strategies in the treatment of osteoporosis.

Environmental resilience through artificial intelligence: innovations in monitoring and management

المجلة: Environmental Science and Pollution Research

سنة النشر: 2024

تاريخ النشر: 0204-02-15

The rapid rise of artificial intelligence (AI) technology has revolutionized numerous fields, with its applications spanning finance, engineering, healthcare, and more. In recent years, AI's potential in addressing environmental concerns has garnered significant attention. This review paper provides a comprehensive exploration of the impact that AI has on addressing and mitigating critical environmental concerns. In the backdrop of AI's remarkable advancement across diverse disciplines, this study is dedicated to uncovering its transformative potential in the realm of environmental monitoring. The paper initiates by tracing the evolutionary trajectory of AI technologies and delving into the underlying design principles that have catalysed its rapid progression. Subsequently, it delves deeply into the nuanced realm of AI applications in the analysis of remote sensing imagery. This includes an intricate breakdown of challenges and solutions in per-pixel analysis, object detection, shape interpretation, texture evaluation, and semantic understanding. The crux of the review revolves around AI's pivotal role in environmental control, examining its specific implementations in wastewater treatment and solid waste management. Moreover, the study accentuates the significance of AI-driven early-warning systems, empowering proactive responses to environmental threats. Through a meticulous analysis, the review underscores AI's unparalleled capacity to enhance accuracy, adaptability, and real-time decision-making, effectively positioning it as a cornerstone in shaping a sustainable and resilient future for environmental monitoring and