Acta Chimica Slovaca (ACS) publishes papers on fundamental and applied aspects of chemistry, biochemistry, chemical technology, chemical engineering and process control, biotechnology and food technology. Welcome are also topics which include chemical aspects of materials, physical chemistry and chemical physics, analytical chemistry, macromolecular chemistry and biomedical engineering.

Preparation and properties of bioactive packaging materials on the starch base

Hana Smítková *, Miroslav Marek, Jaroslav Dobiáš

Department of Food Preservation, Faculty of Food and Biochemical Technology, Institute of Chemical Technology in Prague, Technická 5, 166 28 Prague 6, Czech Republic

E-mail: *

Abstract: In this study the surface adjustment by two polymers with addition of preservatives of chosen packaging material on starch base with incorporated additives has been investigated. Its bioactive function was verified by measuring zones of inhibition and mutual comparison of bacteriocin released from samples coated with polymers. The best results were achieved when chosen sample containing 15 % of sawdust, 5 % of PVOH and 2 % of calcium stearate was coated by 30 % of Kombilak L1917 solution or 10 % copolyamide 6/12 solution. The addition of antimicrobial agents slightly increased hydrophilicity of coated samples. Immobilization of preservative had no significant effect on the mechanical strength of coated samples. For both types of relevant polymers used amount of immobilized Nisaplin was quite sufficient for effective inhibition of microbial cultures Lactobacillus Helveticus CH1.

Keywords: bioactive packaging, nisin, potato starch, surface adjustment

Full paper in Portable Document Format: acs_0134.pdf

Acta Chimica Slovaca, Vol. 5, No. 2, 2012, pp. 225—231