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Although aminoglycosides are one of the common classes of antibiotics that have been widely used for treating infections caused by pathogenic bacteria, the evolution of bacterial resistance mechanisms and their inherent toxicity have diminished their applicability. Biocompatible carrier systems can help sustain and control the delivery of antibacterial compounds while reducing the chances of antibacterial resistance or accumulation in unwanted tissues. In this study, novel chitosan gel beads were synthesized by a double ionic co-crosslinking mechanism. Tripolyphosphate and alginate, a polysaccharide obtained from marine brown algae, were employed as ionic cross-linkers to prepare the chitosan-based networks of gel beads. The in vitro release of streptomycin and kanamycin A was bimodal; an initial burst release was observed followed by a diffusion mediated sustained release, based on a Fickian diffusion mechanism. Finally, in terms of antibacterial properties, the particles resulted in growth inhibition of Gram-negative () bacteria.
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http://dx.doi.org/10.3390/polym13193326 | DOI Listing |
Gels
August 2025
Department of Pharmacy, University of Salerno, 84084 Fisciano, Italy.
Infection control and bleeding management in deep wounds remain urgent and unmet clinical challenges that demand innovative, multifunctional, and sustainable solutions. Unlike previously reported sodium alginate and silk fibroin-based gel formulations, the present work introduces a dual-functional system combining antimicrobial and haemostatic activity in the form of conformable aerogel beads. This dual-functional formulation is designed to absorb exudate, promote clotting, and provide localized antimicrobial action, all essential for accelerating wound repair in high-risk scenarios within a single biocompatible system.
View Article and Find Full Text PDFBioresour Technol
December 2025
College of Ocean and Civil Engineering, Dalian Ocean University, Dalian 116023, China. Electronic address:
This study developed a halotolerant composite bio-agent (SND223) containing Acinetobacter B2, B3, and Zobellella sp. MAD-44 (2:2:3) for saline aquaculture wastewater treatment. Optimised at carbon-to-nitrogen (C/N) 10, 150 r/m, and 30 °C, SND223 achieved complete ammonia (100 %) and high nitrate (97.
View Article and Find Full Text PDFFood Chem
August 2025
State Key Laboratory of Food Science and Resources, School of Food science and technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, Jiangsu 214122, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, 1800 Lihu Avenue, Wuxi, Jiangsu
Janus materials with anisotropic surface exhibit novel physicochemical and functional characteristics compared to isotropic materials, offering great potential in advanced food applications. Among them, polysaccharide-based Janus materials have gained increasing attention due to their biocompatibility, biodegradability, and structural tunability. This review summarized recent progress in the design and application of polysaccharide-based Janus materials across multiscale structures, including particles, films, and gels.
View Article and Find Full Text PDFLangmuir
September 2025
School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, People's Republic of China.
The development of efficient and environmentally sustainable adsorbents for dye removal from wastewater remains a significant environmental challenge. Azo dyes, such as methyl orange (MO), persist in aquatic environments due to their high chemical stability and resistance to biodegradation. Although chitosan-based materials have been extensively studied for dye adsorption, their low solubility, poor mechanical stability, and limited adsorption capacity restrict large-scale applications.
View Article and Find Full Text PDFFood Chem
July 2025
Engineering Research Center for High-Valued Utilization of Fruit Resources in Western China, Ministry of Education, Shaanxi Normal University, 620 West Changan Avenue, Changan, Xi'an 710119, PR China; National Research & Development Center of Apple Processing Technology, Shaanxi Normal University, 6
Sodium alginate (SA) gel beads are well-known carriers for curcumin (Cur) delivery, however their insufficient release efficiency in the colon restricts their application. To address this issue, we developed composite gel beads as Cur carriers, designated as PME-NPGP+SA, which comprised SA and pectin derived from Nicandra Physodes (Linn.) Gaertn.
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