1. A PROCESS OF PREPARING A POWERFUL ANTIBIOTIC SUBSTANCE WHICH COMPRISES COMMINUTING THE FRUIT PIT OF THE TREE PERSEA GRATISSIMA, TREATING THE SAID FRUIT PIT WITH ACETONE AT A TEMPERATURE NOT SUBSTANTIALLY IN EXCESS OF ROOM TEMPERATURE TO FORM A NON-AQUEOUS SOLUTION OF THE ANTIBIOTIC MATERIAL, SEPARATING THE SOLUTION FROM THE INSOLUBLE RESIDUE, AND REDUCING THE SOLUTION TO DRYNESS BY SUBJECTING THE SAID SOLUTION TO DISTILLATION AT A REDUCED PRESSURE TO OBTAIN A POWERFUL ANTIBIOTIC SUSBTANCE.