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...

Post-coating of biodegradable polylactides (PLA)/polyethylene glycol (PEG) microspheres with a gelatin film produced by dipping the microspheres into a gelatin solution to reduce the initial drug release burst was investigated. Biodegradable block PLA/PEG microspheres, prepared by w/o emulsion/solvent evaporation, showed that the hydrophilic segment PEG protruded to the sphere surface. However,...

The objectives of this study were to estimate the heritabilities for and genetic correlations among resistance to bacterial cold-water disease and growth traits in a population of rainbow trout (Oncorhynchus mykiss). Bacterial cold-water disease, a chronic disease of rainbow trout, is caused by Flavobacterium psychrophilum. This bacterium also causes acute losses in young fish, known as rainbow...

This study investigated the chemical grafting of a single-layer poly(vinyl alcohol) (PVOH) film. The effect of the grafting parameters (grafting time, grafting temperature, and concentration of fatty acid chloride) on the hydrophobicity of the film surface and the film solubility were evaluated. The PVOH substrate film (cold-water soluble at 20°C) was manufactured by flat extrusion and had a th...

Background: Newer antidiarrheal agents include the mucoprotectants gelatin tannate and xyloglucan. Methods: Rat models of cholera toxin (CT)-induced water secretion were used to evaluate mucoprotective effects tannate, xyloglucan, related compounds. Results: Oral pretreatment for 4 days with (250 500 mg/kg/day), but not tannic acid or (both 125 blocked CT-induced intestinal secretion. was also ...

This study was conducted to determine the effect of duck feet gelatin concentration on the physicochemical, textural and sensory properties of duck meat jellies. Duck feet gelatin was prepared with acidic swelling and hot water extraction. In this study, four duck meat jellies were formulated with 3, 4, 5, and 6% duck feet gelatin, respectively. In the preliminary experiment, the increase in du...

Abstract Gelatin is a type of protein obtained from natural collagen found in skin and bones. This study aimed to see the effect different types acids on characteristics gelatin produced tuna fish The method used this research was exploratory with 3 treatments, which acid solutions such as CH COOH 3%, H PO4 3% HCL extraction process. yielded analyzed water content, ash content pH value. result ...

In this paper the authors discuss the effects of cold fronts on the dynamics of freshwater ecosystems of southeast South America. Cold fronts originating from the Antarctic show a monthly frequency that promotes turbulence and vertical mixing in reservoirs with a consequence to homogenize nutrient distribution, dissolved oxygen and temperature. Weak thermoclines and the athelomixis process imme...