#$%^&*AU2015258179A120151203.pdf#####39 ABSTRACT This invention provides antimicrobial compositions containing methylglyoxal and material with methylglyoxal contained. The antimicrobial activity of methylglyoxal, or of material with a methylglyoxal presence, is maintained and/or enhanced by mixing methylglyoxal or material with a 5 methyglyoxal presence with cyclodextrin. Methods of preparing such compositions, including powder composition, and methods of using such compositions are also provided.0. 8 0. 7 ft 60. 5 I 0.3 0- 2 0. 10 0 5 10 15 20 25 30 Culture Hours Figure 1 0. 7 0. 6 0. 5 0. 3 0. 2 -0.1l 0 0 0 40 6080 CultureHours Figure 2 1/3