Antibacterial Activity and Chemical Analyses of the Alkaloidal Fraction of Neltuma laevigata (Humb. & Bonpl. Ex Willd) Britton & Rose Inflorescences
View abstract on PubMed
Summary
This summary is machine-generated.The alkaloidal fraction from Neltuma laevigata inflorescences exhibits significant antibacterial properties against Staphylococcus aureus and Vibrio cholerae. This study also identified Julifloridine, a piperidine alkaloid, for the first time in this species.
Area Of Science
- Phytochemistry
- Pharmacology
- Microbiology
Background
- Neltuma (Prosopis) species are utilized in traditional medicine across continents.
- Neltuma laevigata from Mexico is traditionally used for infections, with activities linked to alkaloids and phenylpropanoids.
Purpose Of The Study
- To evaluate the antibacterial activity of the alkaloidal fraction from Neltuma laevigata inflorescences.
- To investigate the effect of this fraction on bacterial plasmatic membranes.
- To identify specific compounds within the alkaloidal fraction.
Main Methods
- Antibacterial activity assessed using Kirby-Bauer and broth microdilution assays against Staphylococcus aureus and Vibrio cholerae.
- Plasmatic membrane effects studied via protein leakage assays and fluorescence microscopy.
- Compound identification through chromatographic separation, nuclear magnetic resonance (NMR), and high-resolution electrospray ionization mass spectrometry (HRESIMS).
Main Results
- The alkaloidal fraction demonstrated significant antibacterial activity against both tested bacterial strains.
- Evidence suggests the alkaloidal fraction impacts the cytoplasmic membrane of bacteria.
- Julifloridine, a piperidine alkaloid, was identified in Neltuma laevigata for the first time.
Conclusions
- Neltuma laevigata inflorescences possess potent antibacterial compounds, primarily alkaloids.
- The observed antibacterial effect may involve disruption of the bacterial cytoplasmic membrane.
- The identification of Julifloridine expands the known phytochemical profile of this species.

