Rhamnolipid Micellization and Adsorption Properties
Biosurfactants are naturally occurring amphiphiles that are being actively pursued as alternatives to synthetic surfactants in cleaning, personal care, and cosmetic products. On the basis of their ability to mobilize and disperse hydrocarbons, biosurfactants are also involved in the bioremediation o...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-09-01
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| Series: | International Journal of Molecular Sciences |
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| Online Access: | https://www.mdpi.com/1422-0067/23/19/11090 |
| _version_ | 1797479212454510592 |
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| author | Yi Zhang Tess L. Placek Ruksana Jahan Paschalis Alexandridis Marina Tsianou |
| author_facet | Yi Zhang Tess L. Placek Ruksana Jahan Paschalis Alexandridis Marina Tsianou |
| author_sort | Yi Zhang |
| collection | DOAJ |
| description | Biosurfactants are naturally occurring amphiphiles that are being actively pursued as alternatives to synthetic surfactants in cleaning, personal care, and cosmetic products. On the basis of their ability to mobilize and disperse hydrocarbons, biosurfactants are also involved in the bioremediation of oil spills. Rhamnolipids are low molecular weight glycolipid biosurfactants that consist of a mono- or di-rhamnose head group and a hydrocarbon fatty acid chain. We examine here the micellization of purified mono-rhamnolipids and di-rhamnolipids in aqueous solutions and their adsorption on model solid surfaces. Rhamnolipid micellization in water is endothermic; the CMC (critical micellization concentration) of di-rhamnolipid is lower than that of mono-rhamnolipid, and both CMCs decrease upon NaCl addition. Rhamnolipid adsorption on gold surface is mostly reversible and the adsorbed layer is rigid. A better understanding of biosurfactant self-assembly and adsorption properties is important for their utilization in consumer products and environmental applications. |
| first_indexed | 2024-03-09T21:42:30Z |
| format | Article |
| id | doaj.art-bd0194c44ed447f382ed4857000c9996 |
| institution | Directory Open Access Journal |
| issn | 1661-6596 1422-0067 |
| language | English |
| last_indexed | 2024-03-09T21:42:30Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | International Journal of Molecular Sciences |
| spelling | doaj.art-bd0194c44ed447f382ed4857000c99962023-11-23T20:27:23ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672022-09-0123191109010.3390/ijms231911090Rhamnolipid Micellization and Adsorption PropertiesYi Zhang0Tess L. Placek1Ruksana Jahan2Paschalis Alexandridis3Marina Tsianou4Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York (SUNY), Buffalo, NY 14260-4200, USADepartment of Chemical and Biological Engineering, University at Buffalo, The State University of New York (SUNY), Buffalo, NY 14260-4200, USADepartment of Chemical and Biological Engineering, University at Buffalo, The State University of New York (SUNY), Buffalo, NY 14260-4200, USADepartment of Chemical and Biological Engineering, University at Buffalo, The State University of New York (SUNY), Buffalo, NY 14260-4200, USADepartment of Chemical and Biological Engineering, University at Buffalo, The State University of New York (SUNY), Buffalo, NY 14260-4200, USABiosurfactants are naturally occurring amphiphiles that are being actively pursued as alternatives to synthetic surfactants in cleaning, personal care, and cosmetic products. On the basis of their ability to mobilize and disperse hydrocarbons, biosurfactants are also involved in the bioremediation of oil spills. Rhamnolipids are low molecular weight glycolipid biosurfactants that consist of a mono- or di-rhamnose head group and a hydrocarbon fatty acid chain. We examine here the micellization of purified mono-rhamnolipids and di-rhamnolipids in aqueous solutions and their adsorption on model solid surfaces. Rhamnolipid micellization in water is endothermic; the CMC (critical micellization concentration) of di-rhamnolipid is lower than that of mono-rhamnolipid, and both CMCs decrease upon NaCl addition. Rhamnolipid adsorption on gold surface is mostly reversible and the adsorbed layer is rigid. A better understanding of biosurfactant self-assembly and adsorption properties is important for their utilization in consumer products and environmental applications.https://www.mdpi.com/1422-0067/23/19/11090biosurfactantgreen surfactantrhamnolipidself-assemblyformulationbioremediation |
| spellingShingle | Yi Zhang Tess L. Placek Ruksana Jahan Paschalis Alexandridis Marina Tsianou Rhamnolipid Micellization and Adsorption Properties International Journal of Molecular Sciences biosurfactant green surfactant rhamnolipid self-assembly formulation bioremediation |
| title | Rhamnolipid Micellization and Adsorption Properties |
| title_full | Rhamnolipid Micellization and Adsorption Properties |
| title_fullStr | Rhamnolipid Micellization and Adsorption Properties |
| title_full_unstemmed | Rhamnolipid Micellization and Adsorption Properties |
| title_short | Rhamnolipid Micellization and Adsorption Properties |
| title_sort | rhamnolipid micellization and adsorption properties |
| topic | biosurfactant green surfactant rhamnolipid self-assembly formulation bioremediation |
| url | https://www.mdpi.com/1422-0067/23/19/11090 |
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