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Essential oils from pipilongo seeds (Piper tuberculatum) was extracted using supercritical carbon dioxide. The extraction was performed as a function of particle size of the grinded seeds. The highest yield (2,812%) was obtained with the smallest particle size. The chemical composition analysis  of  the  oil  by  GC-MS  led  to  identify  15  compounds,  some  of  which  are  β-elemene, caryophyllene, β-farnesene, neophytadiene and piperine among others. The microbicide activity of the essential oil was determined by Minimum Inhibitory Concentration (MIC) and Minimum Bactericidal Concentration (MBC) assays, showing that the growth of the bacteria Staphylococcus aureus and Bacillus subtilis was inhibited, and hence with a possible microbicidal effect, whereas for pseudomonas aeruginosa and Salmonella typhimurium showed no effect on their growth.

Restrepo Osorio, J., Colmenares Dulcey, A. J., Mora, L. E., & Sánchez Andica, R. A. (2014). Extraction, Chemical Composition and Antimicrobial Activity of the Essential Oils of Pipilongo (Piper Tuberculatum)Using Supercritical Carbon Dioxide. Revista De Ciencias, 17(3), 45–56. https://doi.org/10.25100/rc.v17i3.478