Antibacterial Assay of Submicro Particles Chitooligosaccharide Against Staphylococcus aureus and Escherichia coli In Vitro Ropiana Purwaningsih 08061181722013 ABSTRACT Chitooligosaccharide is a derivative of chitosan resulting from the deacetylation of chitin and it has been widely reported that Chitooligosaccharide has been shown to have biological activity as an antibacterial. The purpose of …