Scanning force microscopy (SFM) is used to investigate novel perturbation/response phenomena in a soft polymer network. Topics addressed include (i) the volume of film affected by tip-sample contact and (ii) the time-evolving residual signature of this contact. An outward deformation of nanometer-scale, soft, hydrated gelatin films is induced by the close proximity of the SFM tip. A domelike de...

This study focused on the development of gelatin-based films with incorporation of microcrystalline cellulose as reinforcement material. Clove (Syzygium aromaticum), nutmeg (Myristica fragrans), and black pepper (Piper nigrum) oleoresins containing antimicrobial compounds of natural origin were incorporated into the films. The mechanical, thermal, optical, and structural properties, as well as ...

Background and Objectives: Microbial activity is the main factor in spoiling food products, which not only changes their texture and taste but also causes economic damage and poisoning. The present study aimed to assess the effects of essential oil of Bane (Pistacia atlantica) on physico-mechanical and antimicrobial properties of gelatin- carboxymethyl cellulose film. Materials and Methods: ...

Gelatin?based films incorporated with Arbutus unedo fruit extract (AFE) were prepared and characterized. LC?DAD analysis demonstrated that the most abundant phenolic compounds in AFE procyanidin B2 gallic acid. The incorporation of gelatin tested film (TF) caused a remarkable decrease water vapor permeability (5.01 × 10–? g.mm/h.cm².Pa) compared to control (CF). FTIR analyses presented broadeni...

In the manufacture of ophthalmic medicinal films, special attention should be paid to choice a film-forming substance, since both shape future film and its properties as whole depend on it. This article provides laboratory analysis with comparative assessment optimal concentrations two substances, polyvinyl alcohol gelatin. Most presented formers have number disadvantages, such thickness, insuf...

nowadays use of edible films and coatings is increasing due to their biodegradability properties. fish gelatin obtained from fish skin wastage can be used as an appropriate protein compound for preparation of edible films and replacing pork gelatin. in this study, films were prepared from a combination of fish gelatin and three phenolic compounds (caffeic acid, tannic acid and ferulic acid) at ...

AIM Adhesion after pelvic surgery causes infertility, ectopic pregnancy, and ileus or abdominal pain. The materials currently available for clinical use are insufficient. The purpose of this study was to develop an anti-adhesive material that overcomes the limitations of conventional anti-adhesive agents. METHODS The adhesion prevention effects of three methods - a two-layered sheet composed ...

Biopolymer films have an increasing share in the packaging material sector due to a number of advantages: availability, cheapness, easy processing, degradability, etc. On other hand, numerous methods been developed optimize their unfavorable properties (weaker mechanical characteristics, hydrophilicity, etc.). This paper examines influence synthesis method on starch-gelatin properties. The film...

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...