Abstract
The field of polysaccharide systems, primarily chitosan and its derivatives, is a constantly evolving area of science. It offers significant promise for many practical applications due to the numerous beneficial properties of these biopolymers. This trend is confirmed by the next special issue of the journal "Molecules", titled "Chitosan, Chitosan Derivatives, Polysaccharides and Their Applications-Second Edition." This issue is devoted to the latest advances in polysaccharide research conducted in leading laboratories worldwide, with a particular emphasis on new perspectives and the latest, interesting applications in the food, agricultural, medical, biotechnological, and tissue engineering industries. The manuscripts included in this collection focus on research data regarding the production of these systems, their modification, and the application of highly specialized methods to advance science and, above all, improve health and quality of life. This special issue is organized and thematically divided into several areas related to medical and food applications, the combination of polysaccharides with other substances such as polymers, and theoretical studies. Several of the chapters conclude with a review article or even several. All articles (24 in total) included in this special issue are of high quality and represent the latest trends in research on innovative polysaccharide systems.