ijms-logo

Journal Browser

Journal Browser

Special Issue "Microbial Biosurfactants, Current Research Trends and Applications"

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Informatics".

Deadline for manuscript submissions: 31 August 2020.

Special Issue Editors

Prof. Paola Giardina

Guest Editor
Università degli Studi di Napoli Federico II, Department of Chemical Sciences, Naples, Italy
Interests: fungal proteins; proteic biosurfactants; surface modification; hydrophobins; functional amyloids
Special Issues and Collections in MDPI journals
Dr. Alessandra Piscitelli
Website
Guest Editor
Università degli Studi di Napoli Federico II, Department of Chemical Sciences, Naples, Italy
Interests: protein recombinant expression; biosensing; protein immobilization, fungal laccase
Special Issues and Collections in MDPI journals

Special Issue Information

Dear Colloeagues,

Biosurfactants can be defined as the surface-active biomolecules produced by microorganisms. The coexistence of hydrophilic and hydrophobic domains in the same molecule, renders them able to (i) reach interfaces, (ii) lower interfacial tension and (iii) form micelle. Biosurfactants are produced by several variety of bacteria and few fungi and are categorized by their molecular weight. There are low molecular weight molecules as glycolipids, lipo-peptides, fatty acids, phospholipids and high molecular consisting in polymers and proteins.

With the respect to the chemical surfactants, biosurfactants display lower toxicity, higher biodegradability, better environmental compatibility. Due to their unique functional properties, biosurfactants can be used as emulsifiers, wetting agents, foaming agents, spreading agents, functional food ingredients and detergents in several industries including agrochemicals, fertilizers, foods, beverages, cosmetics, pharmaceuticals and many others.

The aim of this Special Issue is to focus on some of the most recent and interesting aspects of the research about biosurfactants and on their multifaceted applications.

Prof. Paola Giardina
Dr. Alessandra Piscitelli
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. International Journal of Molecular Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. There is an Article Processing Charge (APC) for publication in this open access journal. For details about the APC please see here. Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Tensioactive molecules
  • Surface adhesion
  • Antimicrobial activity
  • Antibiofilm activity
  • Emulsions
  • Drug delivery

Published Papers (4 papers)

Order results
Result details
Select all
Export citation of selected articles as:

Research

Jump to: Review

Open AccessArticle
Surfactin as a Green Agent Controlling the Growth of Porous Calcite Microstructures
Int. J. Mol. Sci. 2020, 21(15), 5526; https://doi.org/10.3390/ijms21155526 - 01 Aug 2020
Abstract
This study presents a new, simple way to obtain mesoporous calcite structures via a green method using an eco-friendly surface-active compound, surfactin, as a controlling agent. The effects of synthesis time and surfactin concentration were investigated. The obtained structures were characterized by X-ray [...] Read more.
This study presents a new, simple way to obtain mesoporous calcite structures via a green method using an eco-friendly surface-active compound, surfactin, as a controlling agent. The effects of synthesis time and surfactin concentration were investigated. The obtained structures were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC) coupled with gas mass spectrometry (QMS) analysis. The experimental data showed that surfactin molecules significantly changed the morphology of the calcite crystals, roughening and deforming the surface and creating a greater specific surface area, even at low biosurfactant concentrations (10 ppm). The size of the crystals was reduced, and the zeta potential value of calcium carbonate was more negative when more biosurfactant was added. The XRD data revealed that the biomolecules were incorporated into the crystals and slowed the transformation of vaterite into calcite. It has been shown that as long as vaterite is present in the medium, the calcite surface will be less deformed. The strong influence of surfactin molecules on the crystal growth of calcium carbonate was due to the interaction of surfactin molecules with free calcium ions in the solution as well as the biomolecules adsorption at the formed crystal surface. The role of micelles in crystal growth was examined, and the mechanism of mesoporous calcium carbonate formation was presented. Full article
(This article belongs to the Special Issue Microbial Biosurfactants, Current Research Trends and Applications)
Show Figures

Figure 1

Open AccessArticle
Cerato-Platanins from Marine Fungi as Effective Protein Biosurfactants and Bioemulsifiers
Int. J. Mol. Sci. 2020, 21(8), 2913; https://doi.org/10.3390/ijms21082913 - 21 Apr 2020
Abstract
Two fungal strains, Aspergillus terreus MUT 271 and Trichoderma harzianum MUT 290, isolated from a Mediterranean marine site chronically pervaded by oil spills, can use crude oil as sole carbon source. Herein, these strains were investigated as producers of biosurfactants, apt to solubilize [...] Read more.
Two fungal strains, Aspergillus terreus MUT 271 and Trichoderma harzianum MUT 290, isolated from a Mediterranean marine site chronically pervaded by oil spills, can use crude oil as sole carbon source. Herein, these strains were investigated as producers of biosurfactants, apt to solubilize organic molecules as a preliminary step to metabolize them. Both fungi secreted low molecular weight proteins identified as cerato-platanins, small, conserved, hydrophobic proteins, included among the fungal surface-active proteins. Both proteins were able to stabilize emulsions, and their capacity was comparable to that of other biosurfactant proteins and to commercially available surfactants. Moreover, the cerato-platanin from T. harzianum was able to lower the surface tension value to a larger extent than the similar protein from A. terreus and other amphiphilic proteins from fungi. Both cerato-platanins were able to make hydrophilic a hydrophobic surface, such as hydrophobins, and to form a stable layer, not removable even after surface washing. To the best of our knowledge, the ability of cerato-platanins to work both as biosurfactant and bioemulsifier is herein demonstrated for the first time. Full article
(This article belongs to the Special Issue Microbial Biosurfactants, Current Research Trends and Applications)
Show Figures

Figure 1

Review

Jump to: Research

Open AccessReview
Biosurfactants: Eco-Friendly and Innovative Biocides against Biocorrosion
Int. J. Mol. Sci. 2020, 21(6), 2152; https://doi.org/10.3390/ijms21062152 - 20 Mar 2020
Abstract
Corrosion influenced by microbes, commonly known as microbiologically induced corrosion (MIC), is associated with biofilm, which has been one of the problems in the industry. The damages of industrial equipment or infrastructures due to corrosion lead to large economic and environmental problems. Synthetic [...] Read more.
Corrosion influenced by microbes, commonly known as microbiologically induced corrosion (MIC), is associated with biofilm, which has been one of the problems in the industry. The damages of industrial equipment or infrastructures due to corrosion lead to large economic and environmental problems. Synthetic chemical biocides are now commonly used to prevent corrosion, but most of them are not effective against the biofilms, and they are toxic and not degradable. Biocides easily kill corrosive bacteria, which are as the planktonic and sessile population, but they are not effective against biofilm. New antimicrobial and eco-friendly substances are now being developed. Biosurfactants are proved to be one of the best eco-friendly anticorrosion substances to inhibit the biocorrosion process and protect materials against corrosion. Biosurfactants have recently became one of the important products of bioeconomy with multiplying applications, while there is scare knowledge on their using in biocorrosion treatment. In this review, the recent findings on the application of biosurfactants as eco-friendly and innovative biocides against biocorrosion are highlighted. Full article
(This article belongs to the Special Issue Microbial Biosurfactants, Current Research Trends and Applications)
Show Figures

Graphical abstract

Open AccessReview
Cationic Surfactants: Self-Assembly, Structure-Activity Correlation and Their Biological Applications
Int. J. Mol. Sci. 2019, 20(22), 5534; https://doi.org/10.3390/ijms20225534 - 06 Nov 2019
Cited by 5
Abstract
The development of biotechnological protocols based on cationic surfactants is a modern trend focusing on the fabrication of antimicrobial and bioimaging agents, supramolecular catalysts, stabilizers of nanoparticles, and especially drug and gene nanocarriers. The main emphasis given to the design of novel ecologically [...] Read more.
The development of biotechnological protocols based on cationic surfactants is a modern trend focusing on the fabrication of antimicrobial and bioimaging agents, supramolecular catalysts, stabilizers of nanoparticles, and especially drug and gene nanocarriers. The main emphasis given to the design of novel ecologically friendly and biocompatible cationic surfactants makes it possible to avoid the drawbacks of nanoformulations preventing their entry to clinical trials. To solve the problem of toxicity various ways are proposed, including the use of mixed composition with nontoxic nonionic surfactants and/or hydrotropic agents, design of amphiphilic compounds bearing natural or cleavable fragments. Essential advantages of cationic surfactants are the structural diversity of their head groups allowing of chemical modification and introduction of desirable moiety to answer the green chemistry criteria. The latter can be exemplified by the design of novel families of ecological friendly cleavable surfactants, with improved biodegradability, amphiphiles with natural fragments, and geminis with low aggregation threshold. Importantly, the development of amphiphilic nanocarriers for drug delivery allows understanding the correlation between the chemical structure of surfactants, their aggregation behavior, and their functional activity. This review focuses on several aspects related to the synthesis of innovative cationic surfactants and their broad biological applications including antimicrobial activity, solubilization of hydrophobic drugs, complexation with DNA, and catalytic effect toward important biochemical reaction. Full article
(This article belongs to the Special Issue Microbial Biosurfactants, Current Research Trends and Applications)
Show Figures

Figure 1

Back to TopTop