The objective of this paper is to demonstrate the physical, chemical characteristics present in the essential oil of Muña (Minthostachys setosa), from the province of Yauyos, Department of Lima, as well as establishing the antibacterial effect and minimum inhibitory concentration at which, the above mentioned essential oil is active against pathogens of medical and nutritional importance. characterize physically and chemically essential oil of Muña (Minthostachys setosa), as well as establishing minimum inhibitory concentrations at which the essential oil is active against bacteria of medical and food importance. The essential oil of the leaves of Minthostachys Setosa (Muña) has been extracted by hydrodistillation method. This was subjected to physical-chemical analysis such as Refractive Number, Solubility in Ethanol, Ester Number, Acid Number, etc. And, by planting Zig-Zag method, t...