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Development and Application of Environmentally Friendly Surfactants

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Green Chemistry".

Deadline for manuscript submissions: 31 December 2025 | Viewed by 1460

Special Issue Editor


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Guest Editor
Department of Analytical Chemistry, Faculty of Chemistry, Gdańsk University of Technology (GUT), 80-23 Gdańsk, Poland
Interests: microextraction; surfactans; supramolecular solvent; green solvents; analytical chemistry

Special Issue Information

Dear Colleagues,

Environmentally friendly surfactants have attracted considerable attention in recent years because of their potential to replace petroleum-based surfactants, which pose an environmental risk. The development of environmentally friendly surfactants through various approaches, including the use of renewable resources, green chemistry principles, and biotechnology, is of current interest. In addition, alternative raw materials, such as plant-based oils, sugars, and biomass-derived materials, are being used to produce surfactants with improved sustainability profiles.

This Special Issue provides a platform for knowledge sharing regarding the development and application of environmentally friendly surfactants, highlighting their benefits and challenges in various fields of human life, including industry, medicine, cosmetics, agriculture, food processing, and pharmaceuticals. The application of sustainable surfactants in chemical analysis is also an important topic. The beneficial properties of these compounds could potentially replace organic solvents in sample preparation and make the process greener and safer.

We welcome original articles and reviews outlining a green assessment of the development and application of sustainable surfactants.

We look forward to receiving your contributions and hope that the resulting collection will provide a realistic overview of the current possibilities of environmentally friendly surfactants.

Dr. Christina Vakh
Guest Editor

Manuscript Submission Information

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). 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

  • surfactants
  • green analysis
  • synthesis of sustainable surfactants
  • application of sustainable surfactants

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Published Papers (1 paper)

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Research

21 pages, 2451 KiB  
Article
New Insights on Gordonia alkanivorans Strain 1B Surface-Active Biomolecules: Gordofactin Properties
by João Tavares, Susana M. Paixão, Tiago P. Silva and Luís Alves
Molecules 2025, 30(1), 1; https://doi.org/10.3390/molecules30010001 - 24 Dec 2024
Viewed by 817
Abstract
Biosurfactants/bioemulsifiers (BSs/BEs) can be defined as surface-active biomolecules produced by microorganisms with a broad range of applications. In recent years, due to their unique properties like biodegradability, specificity, low toxicity, and relative ease of preparation, these biomolecules have attracted wide interest as an [...] Read more.
Biosurfactants/bioemulsifiers (BSs/BEs) can be defined as surface-active biomolecules produced by microorganisms with a broad range of applications. In recent years, due to their unique properties like biodegradability, specificity, low toxicity, and relative ease of preparation, these biomolecules have attracted wide interest as an eco-friendly alternative for several industrial sectors, escalating global microbial BS/BE market growth. Recently, Gordonia alkanivorans strain 1B, a bacterium with significant biotechnological potential, well known for its biodesulfurizing properties, carotenoid production, and broad catabolic range, was described as a BS/BE producer. This study focuses on the characterization of the properties of the lipoglycopeptide BSs/BEs produced by strain 1B, henceforth referred to as gordofactin, to better understand its potential and future applications. Strain 1B was cultivated in a chemostat using fructose as a carbon source to stimulate gordofactin production, and different purification methods were tested. The most purified sample, designated as extracted gordofactin, after lyophilization, presented a specific emulsifying activity of 9.5 U/mg and a critical micelle concentration of 13.5 mg/L. FT-IR analysis revealed the presence of basic hydroxyl, carboxyl, ether, amine/amide functional groups, and alkyl aliphatic chains, which is consistent with its lipoglycopeptide nature (60% lipids, 19.6% carbohydrates, and 9% proteins). Gordofactin displayed remarkable stability and retained emulsifying activity across a broad range of temperatures (30 °C to 80 °C) and pH (pH 3–12). Moreover, a significant tolerance of gordofactin emulsifying activity (EA) to a wide range of NaCl concentrations (1 to 100 g/L) was demonstrated. Although with a great loss of EA in the presence of NaCl concentrations above 2.5%, gordofactin could still tolerate up to 100 g/L NaCl, maintaining about 16% of its initial EA for up to 7 days. Furthermore, gordofactin exhibited growth inhibition against both Gram-positive and Gram-negative bacteria, and it demonstrated concentration-dependent free radical scavenging activity for 2,2-diphenyl-1-picrylhydrazyl (IC50 ≈ 1471 mg/L). These promising features emphasize the robustness and potential of gordofactin as an eco-friendly BS/BE alternative to conventional surfactants/emulsifiers for different industrial applications. Full article
(This article belongs to the Special Issue Development and Application of Environmentally Friendly Surfactants)
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