Title
Investigation of antibacterial activity of waste lignocellulosic materials doped with silver
Authors
TEMENUZHKA HR. RADOYKOVA TSVETELINA G. ANGELOVA PAUNKA S. VASSILEVA NELLY V. GEORGIEVA ALBENA K. DETCHEVA KATERINA I. ALEKSIEVA IVO V. VALCHEV SANCHI K. NENKOVA and DIMITAR R. MEHANDJIEV

Received November 5, 2018
Published Volume 53 Issue 5-6 May-June
Keywords antibacterial activity, hydrolyzed lignocellulosic materials, Ag+ ions

Abstract
The antibacterial activity of samples prepared from waste lignocellulosic materials, namely wheat straw and maize stalks, doped with silver on their surface, was investigated. In order to use the various functional groups of these materials, Ag+ was applied to the carrier by the adsorption method. EPR and SEM investigations demonstrated that Ag+ ions were agglomerated into clusters of elemental silver on the carrier. The samples thus produced exhibited high antibacterial activity against gram-positive Bacillus subtilis strain 3563 and gram-negative Escherichia coli K12.