Abstract
The biological activities of the amino acid modified starch-
co-polyacrylamid were screened for their antimicrobial activities against some Gram positive/negative bacteria in addition to some pathogenic yeasts and fungi in solid media using cut plug method. The polymers GP3, GP5 and GP6 showed some activities were recorded against the pathogenis yeasts. The MIC ranged from 150 to 200
μg/ml. No toxicity was observed for all the tested polymers using the biochemical induction. The effect of these polymers on respiration or flow of potassium was also recorded.