“Bactericidal materials containing starch and their applications”

Author, institution: Paulius Pavelas Danilovas, Kaunas University of Technology

Science area, field: Technological Sciences, Chemical Engineering

The Doctoral Dissertation is available at the library of Kaunas University ofTechnology (K. Donelaicio st. 20, Kaunas).

Scientific supervisor:

Dr. Ramunė RUTKAITĖ (Kaunas University of Technology, Technological Sciences, Chemical engineering – 05T).

Scientific advisor:

Prof. Dr. Habil. Algirdas ŽEMAITAITIS (Kaunas University of Technology, Technological Sciences, Chemical engineering – 05T).

Dissertation Defence Board of Chemical Engineering Science Field:

Prof. Dr. Raimundas ŠIAUČIŪNAS (Kaunas University of Technology, Technological Sciences, Chemical Engineering – 05T) – chairman;

Prof. Dr. Habil. Juozas Vidas GRAŽULEVIČIUS (Kaunas University of Technology, Technological Sciences, Chemical Engineering – 05T);

Prof. Dr. Habil. Ričardas MAKUŠKA (Vilnius University, Physical Sciences, Chemistry – 03P);

Prof. Dr. Habil. Audrius Sigitas MARUŠKA (Vytautas Magnus University, Physical Sciences, Chemistry – 03P);

Prof. Dr. Rimantas Petras VENSKUTONIS (Kaunas University of Technology, Technological Sciences, Chemical Engineering – 05T).

Annotation:

Modified starch derivatives obtained from cheap and biodegradable starch are perspective raw materials for high technology antimicrobial products. By using modified starches in the production of iodophors, antibacterial films, coatings and fibers, the usage of synthetic and environmentally unfriendly materials could be reduced.
Main aims of this work were to obtain cationic starch-iodine complexes from N-(2-hydroxyl) propyl-3-trimethyl ammonium starch chloride (cationic starch), investigate their composition and properties, evaluate the possibility of using modified starches in antimicrobial iodine and silver preparations as well as  to prepare antimicrobial product prototypes.
It has been proven that the bactericidal effectiveness of starch iodophors is determined by the strength of interaction between iodine and modified starch polysaccharides and by the ability to release the appropriate amount of iodine in the presence of iodine acceptor.
The prototype of ointment containing bactericidal microparticles of starch iodophors has been produced and evaluated. Effective bactericidal air filters were prepared from cellulose diacetate fibers containing antimicrobial silver nanoparticles. By applying industrial technology, 20 000 units of filters have been produced. Moreover, filters and their operation technology have been implemented into the production of bottled drinking water.