Related Experiment Video
Updated: Jun 25, 2025
08:23
Visualization of Bacterial Resistance using Fluorescent Antibiotic Probes
Published on: March 2, 2020
12.7K
Flavonoids isolated from Vismia macrophylla Kunth against resistant bacteria
Alex-William Sanches1, Rândilla Regis Cordeiro Dos Santos1, Fernando Faustino de Oliveira1
1Department of Exact Sciences, State University of Santa Cruz, Ilhéus, Bahia, Brazil.
Natural Product Research
|May 29, 2024
Summary
The Vismia macrophylla plant extract shows broad-spectrum antimicrobial activity. Researchers identified potent phenolic compounds like glucodistylin and quercitrin, offering potential solutions against microbial resistance.
Area of Science:
- Phytochemistry
- Pharmacology
- Microbiology
Background:
- Limited knowledge exists on phenolic compounds in Vismia macrophylla and their antimicrobial effects.
- Previous studies suggest antimicrobial activity of Vismia macrophylla extracts.
Purpose of the Study:
- To isolate and identify phenolic compounds with antimicrobial activity from Vismia macrophylla leaves.
- To evaluate the antimicrobial potential of Vismia macrophylla against pathogenic bacteria.
Main Methods:
- Ethanolic extract (VmL-Et) of Vismia macrophylla leaves.
- Sephadex column separation and Gas Chromatography-Mass Spectrometry (GC-MS) analysis.
- Isolation and identification of phenolic compounds using spectroscopic techniques.
Main Results:
- Identified phenolic compounds include catechin, osajaxanthone, quercetin, quercitrin, and glucodistylin.
- Osajaxanthone, quercetin, quercitrin, and glucodistylin were isolated and characterized.
- VmL-Et, glucodistylin, and quercitrin demonstrated broad-spectrum antimicrobial activity against tested bacteria.
Conclusions:
- Vismia macrophylla from the Brazilian biome is a source of phenolic compounds with significant antimicrobial properties.
- Isolated compounds like glucodistylin and quercitrin show promise in combating antimicrobial resistance.
Related Concept Videos
01:31Defense Against Bacterial Pathogens
1.4K
The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
1.4K
01:18Surface Membrane Barriers
1.1K
The skin and mucous membranes serve as the primary line of defense against pathogens by providing both physical and chemical protection. These barriers are essential in preventing the entry and establishment of microbes, thereby maintaining the integrity of the host.
The outer layer of the skin, the epidermis, is a robust barrier comprising layers of closely packed keratinized cells. This dense arrangement prevents microbes from penetrating the body. The periodic shedding of epidermal cells...
The outer layer of the skin, the epidermis, is a robust barrier comprising layers of closely packed keratinized cells. This dense arrangement prevents microbes from penetrating the body. The periodic shedding of epidermal cells...
1.1K
00:57Antibiotic Selection
53.2K
Overview
53.2K
01:23Antimicrobial Proteins
979
Antimicrobial proteins are important components of the immune system. They aid the body in combating pathogens by either killing them directly or hindering their replication processes. Four main types of antimicrobial substances are interferons, the complement system, iron-binding proteins, and antimicrobial proteins.
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...
979