Study of the properties of biodegradable alginate films with an active component

Abstract

Abstract. Due to the unfavorable environmental situation associated with the accumulation of large volumes of non-recyclable waste, the development of biodegradable materials based on natural polymers is relevant. In addition, the most promising biodegradable films with active properties that allow to increase the shelf life of food. The novelty of the work lies in the addition of an alginate film as an active component of the protein hydrolyzate to the base of the matrix in different concentrations. The purpose of the research is to establish the properties of biodegradable films based on alginate with the introduction of whey protein hydrolyzate as an active component. Methods. In experimental samples of films, the appearance and transparency were determined visually, thickness, microstructure, antioxidant capacity by coulometric titration, solubility and biodegradability in soil. Results. It has been determined that with various additions of protein hydrolyzate (PH) to the composition of the film, its appearance, transparency and microstructure change significantly. The film with the addition of 1% PH turned out to be the optimal sample according to these indicators - transparent, homogeneous, not sticky. The film thickness did not differ significantly and ranged from 0.23 to 0.29 mm. The antioxidant capacity of the films increased with an increase in the content of PH, while the solubility, on the contrary, decreased. The control sample of the film turned out to be the most soluble. It was also found that all film samples are biodegradable, the control sample and the sample with the addition of 1% PH most quickly turned into biohumus. Thus, the use of a protein hydrolyzate as an active component in the composition of the film showed effectiveness in terms of antioxidant properties. In addition, PH also affected other important properties of the films.