composite edible coating comprising xanthan gum (0.3%) and olive oil (0.1%) enriched with antioxidants (gallic acid 0.1%, ferulic acid 0.1% and ascorbic acid 0.1%) enhanced the postharvest storability and nutritional quality of table grapes. the quality characteristics of table grapes were monitored during storage at 10±2°c, (70–75% rh), at regular intervals of 6 days until 24 days of storage. ...

Profound screening and evaluation methods for biocide-releasing polymer films are crucial for predicting applicability and therapeutic outcome of these drug delivery systems. For this purpose, we developed an agar overlay assay embedding biopolymer composite films in a seeded microbial lawn. By combining this approach with model-dependent analysis for agar diffusion, antimicrobial potency of th...

In sputtering deposition process of TiO2, metal Ti or sintered TiO2 target is used as deposition source. In this study, we have compared the characteristic of target materials. When TiO2 target was used, stoichiometric TiO2 films was deposited under the Ar atmosphere containing 1.0% of oxygen. The highest sputtering rate under this atmosphere was 3.9nm/min at 3.4W/cm2. But, sintered TiO2 target...

practical applications of conducting polymers such as polyaniline as membranes are particulary limitedbecause of their poor mechanical properties. however by mixing polyaniline with some conventional insulatingpolymers such as nylon and preparation composite films through solvent casting or blending, it seems to be asuitable way in order to increase the mechanical properties of the conducting p...

Biopolymer films containing chitosan as antimicrobial agent were obtained. As polymer matrix poly(vinyl alcohol) (PVA) and bacterial cellulose (BC) were used. The films were characterized using FTIR spectroscopy. FTIR spectra of the pure components and of composites films reveal strong interactions between chitosan and PVA and chitosan and bacterial cellulose. These composite films could be use...

Techniques in food packaging are varying depending on the global trends, changes technology, sense of responsibility for nature, and consumer expectations. One new techniques using industry recent years is edible films coatings. Edible coatings biomaterials that applied as a thin layer can be consumed with food. Films obtained from different sources to foods application techniques. fresh fruits...

The packaging protects food from actions of external agents, alterations and contaminations, in addition to adulteration. Edible films are structures produced biopolymers, which can replace non-biodegradable packaging. These have been formulated with naturally polymers polysaccharides, lipids proteins, isolated or combined each other. polysaccharides proteins transparent flexible, although less...

native fish gelatin has some disadvantages such as high hydrophilic, and solubility in cold water. mixing with other biopolymers and crosslinking by sugars may improve functional properties of fish gelatin. so in this research, the effects of ribose were investigated on moisture sorption isotherm, solubility in water, and mechanical properties of cold water fish gelatin (cwfg) films. ribose sug...

In this work, we report for the first time the entrapment of the biomolecular supercomplex Photosystem I (PSI) within a conductive polymer network of polyaniline via electrochemical copolymerization. Composite polymer-protein films were prepared on gold electrodes through potentiostatic electropolymerization from a single aqueous solution containing both aniline and PSI. This study demonstrates...