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Preparation and Characterization of New Biodegradable Packaging Materials Based on Gelatin Extracted from Fish Scales with Cellulose Nanocrystals.
ACS Omega
December 2024
Department of Biological and Physical Sciences, South Carolina State University, Orangeburg, South Carolina 29117, United States.
Food packaging industries generally use petroleum-based packaging materials that are non-biodegradable and harmful to the environment. Eco-friendly polymers such as chitosan (CH), gelatin (GE), and cellulose nanocrystals (CNCs) are leading viable alternatives to plastics traditionally used in packaging because of their higher functionality and biodegradability. In this study, an innovative approach has been disclosed to prepare new packaging materials by utilizing chitosan, gelatin, and cellulose nanocrystals (CNCs) through a simple solution casting method.
View Article and Find Full Text PDFHyperelastic materials are extensively incorporated in medical implants and microelectromechanical systems due to their large, elastic, recoverable strains. However, their mechanical properties are sensitive to processing parameters that may lead to inconsistent characterization. Various test setups have been employed for characterizing hyperelastic materials; however, they are often costly.
View Article and Find Full Text PDFIce-pop making inspired photothermal ultra-swelling microneedles to facilitate loading and intradermal vaccination of tumor antigen.
J Control Release
January 2025
Hangzhou Institute of Medicine, Chinese Academy of Sciences, Hangzhou, Zhejiang 310022, China. Electronic address:
Cancer vaccines hold great promise in the fight against cancer. Here, we report an ice-pop making inspired photothermal ultra-swelling microneedle (PUSMN) patch for facilitating and enhancing cancer vaccination. The PUSMN patch consist of an array of microneedles made from photo-crosslinked methacrylated hyaluronic acid and polydopamine, a near-infrared photothermal conversion material, connected to a customized resin handle like an ice-pop stick.
View Article and Find Full Text PDFFibrous membranes of poly(ethylene oxide)/Sesbania gum oxide/ε-poly(lysine): An influence on its structure.
Food Chem
January 2025
College of Food Science and Engineering, Hainan University, Haikou 570228, China.
Hydrogen peroxide (HO) was used to modify a natural polymer, sesbania gum (SG), to prepare oxidized sesbania gum (OSG) with the aim of investigating the physicochemical properties, antimicrobial activity of polyethylene oxide (PEO), OSG, and ε-poly(lysine) (ε-PL) composite fibre membranes and their applications in fresh-cut mango preservation. The PEO/OSG/ε-PL composite fibre membranes were successfully prepared via solution blow spinning (SBS) technology. The results of a series of characterizations revealed that ε-PL was successfully loaded into the fibrous membranes, exhibited good biocompatibility, and ε-PL was better encapsulated, with the membranes.
View Article and Find Full Text PDFOxidized hyaluronic acid/ε-polylysine/quaternized chitosan hydrogel with shear thinning injectability and self-healing properties for full-time and multipurpose wound healing.
Int J Biol Macromol
January 2025
School of Pharmacy, Qingdao University, Qingdao 266071, China. Electronic address:
Complex wound closure scenarios necessitate the development of advanced wound dressings that can effectively address the challenges of filling irregularly shaped wounds and managing fatigue failures encountered in daily patient activities. To tackle these issues, we develop a multifunctional hydrogel from natural polysaccharides and polypeptides with injectability and self-healing properties for promoting full-time and multipurpose wound healing. Synthesized through dynamic Schiff base linkages between oxidized hyaluronic acid (OHA), ε-polylysine (ε-PL), and quaternized chitosan (QCS), the OHA/ε-PL/QCS hydrogel can gel rapidly within 50 s.
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