CONCLUSION
Re-investigation on the leaves of P.amaryllifolius had
isolated the piperidine and pyrrolidine type
alkaloids. This is the first report that their MIC and MBC
antimicrobial activities have also been determined against three
organisms Staphylococcus aureus ATCC 25923, Escherichia coli
ATCC 25922, and Pseudomonas aeruginosa ATCC 27853.