PLA (polylactic acid) is one of the three major biopolymers available on the market for food packaging, which is both bio-based and biodegradable. However, its performance as a barrier to gases remains too weak to be used for most types of food, particularly oxygen-sensitive foods. A surface treatment, such as coating, is a potential route for improving the barrier properties and/or providing bioactive properties such as antioxidants. Gelatin-based coating is a biodegradable and food-contact-friendly solution for improving PLA properties. The initial adhesion of gelatin to the film is successful, both over time and during production, however, the coating often delaminates. Corona processing (cold air plasma) is a new tool that requires low energy and no solvents or chemicals. It has been recently applied to the food industry to modify surface properties and has the potential to significantly improve gelatin crosslinking. The effect of this process on the functional properties of the coating, and the integrity of the incorporated active compounds were investigated. Two coatings have been studied, a control fish gelatin-glycerol, and an active one containing gallic acid (GA) as a natural antioxidant. Three powers of the corona process were applied on wet coatings. In the test conditions, there were no improvements in the gelatin crosslinking, but the corona did not cause any structural changes. However, when the corona and gallic acid were combined, the oxygen permeability was significantly reduced, while free radical scavenging, reduction, and chelating properties remained unaffected or slightly improved.

The main goals of this article, devoted to the contribution of the prominent Serbian musicologist, composer and aesthetician Dragutin Gostuški (1923-1998) to the semiotics of music, are the following: 1) to show the evolution of semiotic ideas in Gostuški's work; 2) to reconstruct the circumstances under which preparations for the First International Colloquium on the Semiotics of Music took place; and 3) to encourage new research that would reexamine Gostuški's major theoretical opus in the historical context of the discipline.

The main goal of this paper, devoted to the contribution of Czech Musicians to the Serbian Music in the 19th Century is to point out the facts which will contribute to the better understanding of the migration as an important cultural phenomenon. Particular attention will be paid to several musicians whose biographies and achievements are notable.

This paper contributes to the marking of the centenary of the death of two significant composers and conductors - Davorin Jenko (1835-1914) and Stevan St. Mokranjac (1856-1914). Although belonging to different generations, Jenko and Mokranjac were simultaneously active in Serbian culture over the course of almost four decades. This was a very dynamic and fruitful period, marked by historical and political unrests and by the intense processes of searching for Serbian national/ cultural identity. Divided into several fragments, the article identifies the points of intersection in their biographies, examining the delicate nature of their relationship in the context of the discourses of nationalism. Special attention is paid to the facts from the history of the Belgrade Singing Society and the National Theatre, but also to the manifestations by means of which a tradition of cultural remembrance of these two artists is maintained in Serbia in 2014. [Projekat Ministarstva nauke Republike Srbije, br. ON 177004: Identiteti srpske muzike od lokalnih do globalnih okvira: tradicije, promene, izazovi]