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Review
. 2021 Dec 10;11(12):1860.
doi: 10.3390/biom11121860.

A Review on Microbial Products and Their Perspective Application as Antimicrobial Agents

Affiliations
Review

A Review on Microbial Products and Their Perspective Application as Antimicrobial Agents

Alka Rani et al. Biomolecules. .

Abstract

Microorganisms including actinomycetes, archaea, bacteria, fungi, yeast, and microalgae are an auspicious source of vital bioactive compounds. In this review, the existing research regarding antimicrobial molecules from microorganisms is summarized. The potential antimicrobial compounds from actinomycetes, particularly Streptomyces spp.; archaea; fungi including endophytic, filamentous, and marine-derived fungi, mushroom; and microalgae are briefly described. Furthermore, this review briefly summarizes bacteriocins, halocins, sulfolobicin, etc., that target multiple-drug resistant pathogens and considers next-generation antibiotics. This review highlights the possibility of using microorganisms as an antimicrobial resource for biotechnological, nutraceutical, and pharmaceutical applications. However, more investigations are required to isolate, separate, purify, and characterize these bioactive compounds and transfer these primary drugs into clinically approved antibiotics.

Keywords: bacteriocins; chlorellin; filamentous fungi; halocin; lipopeptides; microalgae.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Antibiotics reported from different microorganisms with their target sites. Adapted from: [11].
Figure 2
Figure 2
Mode of action of bacteriocins. Inhibition of cell wall synthesis: class II bacteriocins (e.g., lactococcin) cross the cell wall and bind with the pore-forming receptor in the mannose-phosphotransferase (man-PTS), resulting in the pore formation in the cell membrane. Pore formation: class I bacteriocins, (e.g., nisin) can follow both mechanisms. Nisin generated pores in the cell membrane resulting in the efflux of ions (K+ and Mg2+), amino acids (glutamic acid, lysin), generating proton motive force dissipation and ultimately causes cell death. Adapted from: [50,51].

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