In order to improve its stability and catalytic rate in flour, the immobilization of glucose oxidase (GOX) was investigated in this work. The enzyme was encapsulated in calcium alginate-chitosan microspheres (CACM) using an emulsification-internal gelation-GOX adsorption-chitosan coating method. The interaction between alginate and chitosan was confirmed by infrared spectroscopy (IR). The resul...

The effect of graphene oxide (GO) or reduced GO (rGO) on the structure and properties polyelectrolyte-complexed chitosan/alginate bionanocomposites is highly dependent plasticiser type (glycerol 1-ethyl-3-methylimidazolium acetate ([C2mim][OAc])) due to competing interactions between components. For glycerol-plasticised matrix, inclusion GO/rGO enhanced chitosan crystallinity increased matrix d...

5-ASA is widely used for its local effects in the treatment of inflammatory bowel diseases (Loftus, 2004). Because of the 4-aminophenol structure and antioxidative properties it is considered as a light, temperature and oxygen sensitive drug and its major degradation products are well established (Jensen, 1992). As a zwitter ion, dominantly anionic, 5-ASA has low aqueous solubility and it is po...

Recently, the potential application of deferoxamine (DFO) in several iron dysregulation diseases has been highlighted. However, DFO presents significant limitations in clinical use due to its poor absorption in the gut and very short plasma half-life. To overcome these problems, the feasibility of chitosan/alginate hydrogels as prolonged delivery systems of DFO was investigated. Hydrogel alone ...

Water-in-Water (W/W) emulsions were prepared in aqueous mixtures of an anionic polyelectrolyte (sodium alginate, NaAlg), with a globular protein (bovine serum albumin, BSA). This combination showed phase separation at two different intervals pH, and their behavior was studied. BSA-in-alginate obtained dropped into Ca2+, Fe3+ or chitosan solutions, forming capsules diameters around 2–4 mm, by io...

Nitric oxide (NO) is involved in several physiological processes, such as the control of vascular tone, the immune response and the wound healing process. Thus, there is a great interest in the development of NO-releasing drugs and in matrices which are able to stabilize and release NO locally in different tissues. Thiols, such as glutathione (GSH), are ready nitrosated to form the NO donors S-...

BACKGROUND AND OBJECTIVES Probiotics including strains of Lactobacillus spp. are living microorganisms including which are beneficial to human and animals health. In this study, Lactobacillus has been isolated from corn silage in a cold region of Iran by anaerobic culture. MATERIALS AND METHODS The bacteriological and biochemical standard methods were used for identification and phenotypic ch...

Due to its bioactivity, hydroxyapatite (HAp) is one of the most perspective materials for controlled drug delivery. Biodegradable polymers like chitosan and sodium alginate are used as coating materials for ceramic scaffolds. In this work the application of HAp/sodium alginate or chitosan composite materials which provide controlled lidocaine release is discussed. The polymers and lidocaine hyd...

This paper describes the synthesis and application of alginate-chitosan-cyclodextrin micro- and nanoparticulate systems loaded with isoniazid (INH) and isoconazole nitrate (ISN) as antimycobacterial compounds. Preparation and morphology of the obtained particles, as well as antimycobacterial activity data of the obtained systems are presented. Docking of isoconazole into the active site of enoy...