From experiment, I study the ability of microorganisms to excrete hydrolytic extracellular enzyme capable of degrading polysaccharide and protein with method various for observe properties of microorganisms.
In part A: in step Iodine solution interacts with starch agar and make dark-blue, this color to not far a long time and around colony not have clear zone ไม่พบอะไรขึ้นในเทสทูบ