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Synthesis of Schiff bases based on Chitosan, thermal stability and evaluation of antimicrobial and antitumor activities.
Sci Rep
January 2025
Department of Chemistry, Faculty of Science, Al-Azhar University, Nasr City, 11884, Cairo, Egypt.
A Schiff base of Chitosan was prepared by condensing of the Chitosan (CS) with six aromatic aldehydes and confirmed by FT-IR, NMR, XRD, TGA, and DSC. XRD results showed the disappeared of peaks at 2θ = 10° for CS and appeared one peaks at around 2θ of 23° for Schiff bases, while TGA was demonstrated that the thermal stability of CS has improved after the modification with the corresponding aldehyde. Also, DSC shows endothermal peak of CS at 100 °C due to the loss of water and second thermal event related to the decomposition of amine units with an exothermic peak at 295 °C, while Schiff bases shows endothermal peak around 70-95 °C which is related to the loss of water for all samples and the second exothermic peak around 260-280 °C is related to the decomposition of the amine group in the polymer units.
View Article and Find Full Text PDFDetermination of antibacterial and antioxidant potential of organic crude extracts from Malus domestica, Cinnamomum verum and Trachyspermum ammi.
Sci Rep
January 2025
Department of Research and Development, Paktex Industries, 2.5 KM Tatlay Road, Kamoke, Gujranwala, 52470, Pakistan.
Plants are the rich source of biologically active compounds which can be obliging against various pathogenic microorganisms and cancerous diseases. The current study evaluated the antibacterial potential of aqueous, methanol, ethanol, and acetone extracts of Malus domestica (apple), Cinnamomum verum (cinnamon) and Trachyspermum ammi (ajwain) via agar well diffusion methods and minimum inhibitory concentration (MIC) in (mm) against Staphylococcus aureus (ATCC 25923) and Salmonella typhi (ATCC 19430). The antioxidant properties including total phenolic content (TPC), total flavonoid content (TFC), DPPH and reducing power was determined by UV/VIS spectrophotometery and all the results interpreted through one way ANOVA (STATISTICA).
View Article and Find Full Text PDFNano-chitosan-coated, green-synthesized selenium nanoparticles as a novel antifungal agent against Sclerotinia sclerotiorum: in vitro study.
Sci Rep
January 2025
Biophysics Department, Faculty of Science, Cairo University, Giza, Egypt.
Chemical fungicides have been used to control fungal diseases like Sclerotinia sclerotiorum. These fungicides must be restricted because of their toxicity and the development of resistance strains. Therefore, utilizing natural nanoscale materials in agricultural production is a potential alternative.
View Article and Find Full Text PDFMolecular Characterization of Gene Encoding Outer Membrane Protein in Pathogenic Serovars in Iran.
J Trop Med
December 2024
Department of Microbiology, Agricultural Research, Education and Extension Organization (AREEO), Razi Vaccine and Serum Research Institute, Karaj, Iran.
The protein is highly conserved among pathogenic serovars and it is expressed during both acute and chronic infections. The aim of this study was to clone and sequence of the protein-encoding gene of serovars. In this study, 23 pathogenic serovars and two nonpathogenic serovars were used.
View Article and Find Full Text PDFEnhancing the quality of lentil proteins via combination with whey proteins based on a dual process: a novel strategy through the incorporation of complexation and fermentation.
Food Sci Biotechnol
January 2025
QU Health, College of Health Sciences, Qatar University, P.O. Box 2713, Doha, Qatar.
In recent years, there has been a growing interest in developing a distinguished alternative to human consumption of animal-based proteins. The application of lentil proteins in the food industry is typically limited due to their poor solubility and digestibility. An innovative method of balancing lentil-whey protein (LP-WP) complexes with higher-quality protein properties was established to address this issue, which coupled a pH-shifting approach with fermentation treatment.
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