Industrial applications require enzymes highly stable and economically viable in terms of reusability. Enzyme immobilization is an exciting alternative to improve the stability of enzymatic processes. The immobilization of two commercial enzymes is reported here (cellulase and xylanase) using three chemical methods (adsorption, reticulation, and crosslinking-adsorption) and two polymeric suppor...

Biopolymers are promising materials in the delivery of protein drugs due to their compatibility, degradation behavior, and nontoxic nature on administration. On suitable chemical modification, these polymers can provide better materials for drug delivery systems. Nanostructured drug carriers allow the delivery of not only small-molecule drugs but also of nucleic acids and proteins. The use of b...

Food grade micro- or nano-carrier systems (NCS) are being developed to improve the controlled release of antimicrobial agents. To augment the stability of liposomal NCS and to overcome the limitations associated with the use of free bacteriocin (nisin) in the food system, multi-component colloidosomes (MCCS) were developed by electrostatic interactions between anionic alginate and cationic chit...

The present review article intends to direct attention to the technological advances made since 2009 in the area of genipin-crosslinked chitosan (GEN-chitosan) hydrogels. After a concise introduction on the well recognized characteristics of medical grade chitosan and food grade genipin, the properties of GEN-chitosan obtained with a safe, spontaneous and irreversible chemical reaction, and the...

The objective of the present article is to emphasize that isothermal solution calorimetry (ISC) can be used determine kinetics reactions interest in biotechnology. major advantage this technique it enables characterize drug release profiles real time noninvasively. Here ISC was monitor pyrimethamine incorporated hydrogels oxidized alginate, ADA, and alginate blended with chitosan, ADA-Chit. mec...

Nature provides concepts and materials with interesting functionalities to be implemented in innovative sustainable materials. In this review, it is illustrated how the combination of biological macromolecules, i.e. polydopamine polysaccharides (cellulose, chitin/chitosan, alginate), enables create functional controlled properties. The mussel-adhesive properties rely on secretion proteins havin...

A biodegradable sponge, composed of chitosan (CS) and sodium alginate (SA), was successfully obtained in this work. The sponge was ethereal and pliable. The chemical structure and morphology of the sponges was characterized by FTIR and SEM. The swelling ability, in vitro drug release and degradation behaviors, and an in vivo animal test were employed to confirm the applicability of this sponge ...

The purpose of this study was to prepare stable polymer-liposome complexes using a new, improved one-pot method. Complexes prepared by the conventional method were used as reference. combines vesicle formation and complexation with polymer in single step allowing for fewer steps compared thin-film followed coating. This has possibility complexing on surface within aqueous core liposomes. Soya p...