Results 1 to 10 of about 3,300 (136)

Development of Mild Palladium-Catalyzed N-Arylation of Ortho-Acylanilines in Rhamnolipid Micellar System. [PDF]

ChemSusChem
Aqueous micellar catalysis using industrially sourced rhamnolipids enables efficient Pd‐catalyzed N‐arylation of o‐acylanilines at 40°C. This surfactant‐driven system offers a sustainable and more efficient alternative to organic solvents, combining broad substrate scope, low catalyst loading, and enhanced energy efficiency.
Herczegh AR, Kollár PR, Lehmann J, Novák Z.   +3 more
europepmc   +2 more sources

Heterologous Rhamnolipid Biosynthesis: Advantages, Challenges, and the Opportunity to Produce Tailor-Made Rhamnolipids [PDF]

Frontiers in Bioengineering and Biotechnology, 2020
The first heterologous expression of genes responsible for the production of rhamnolipids was already implemented in the mid-1990s during the functional identification of the rhlAB operon. This was the starting shot for multiple approaches to establish the rhamnolipid biosynthesis in different host organisms.
Andreas Wittgens, Andreas Wittgens, Frank Rosenau, Frank Rosenau, Frank Rosenau   +4 more
openaire   +5 more sources

An Interaction of Rhamnolipids with Cu2+ Ions [PDF]

Molecules, 2018
This study was focused on the description of interaction between Cu2+ ions and the 1:1 mono- and dirhamnolipid mixtures in the premicellar and aggregated state in water and 20 mM KCl solution at pH 5.5 and 6.0. The critical micelle concentration of biosurfactants was determined conductometrically and by the pH measurements.
Jolanta Cieśla, Magdalena Koczańska, Andrzej Bieganowski   +2 more
openaire   +3 more sources

Rhamnolipid Micellization and Adsorption Properties

International Journal of Molecular Sciences, 2022
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.
Yi Zhang, Tess L. Placek, Ruksana Jahan, Paschalis Alexandridis, Marina Tsianou   +4 more
openaire   +2 more sources

Micellar and solubilizing properties of rhamnolipids

Magnetic Resonance in Chemistry, 2023
Abstract We studied the micellar and solubilizing properties of aqueous solutions of unfractionated rhamnolipids produced by Pseudomonas aeruginosa .
Victor P. Arkhipov, Ruslan V. Arkhipov, Ekaterina V. Petrova, Andrei Filippov   +3 more
openaire   +3 more sources

Biophysical characterization of synthetic rhamnolipids [PDF]

The FEBS Journal, 2006
Synthetic rhamnolipids, derived from a natural diacylated glycolipid, RL‐2,214, produced by Burkholderia (Pseudomonas) plantarii, were analyzed biophysically. Changes in the chemical structures comprised variations in the length, the stereochemistry and numbers of the lipid chains, numbers of rhamnoses, and the occurrence of charged or neutral groups ...
Jörg, Howe, Jörg, Bauer, Jörg, Andrä, Andra B, Schromm, Martin, Ernst, Manfred, Rössle, Ulrich, Zähringer, Jörg, Rademann, Klaus, Brandenburg   +8 more
openaire   +2 more sources

Influence of Calcium Ions on Rhamnolipid and Rhamnolipid/Anionic Surfactant Adsorption and Self-Assembly

Langmuir, 2013
The impact of Ca(2+) counterions on the adsorption at the air-water interface and self-assembly in aqueous solution of the rhamnolipid biosurfactant and its mixture with the anionic surfactant sodium dodecylbenzenesulfonate, LAS, has been studied using neutron reflectometry and small-angle neutron scattering. The results illustrate how rhamnolipids are
Chen, M., Dong, C., Penfold, J., Thomas, R., Smyth, T., Perfumo, A., Marchant, R., Banat, I., Stevenson, P., Parry, A., Tucker, I., Grillo, I.   +11 more
openaire   +4 more sources

Biosurfactant production by Pseudomonas aeruginosa isolated from mining waste: From genomic analysis to development of a polymeric composite for removal of hexavalent chromium

Polymer International, EarlyView.
Biosurfactant was produced by Pseudomonas aeruginosa using andiroba waste from Amazonia. A biosurfactant–alginate composite (Alg/BioS) was successfully synthesized via ionotropic gelation, and achieved up to 70% Cr6+ removal from water. Abstract Environmental contamination by heavy metals represents a significant challenge due to their persistence in ...
Paulo Diniz Austriaco, Emilly Cruz da Silva, Glenda Sores Gomes, Joane Almeida Alves, Amanda Vidal, Leandro Argolo, Rafaela Ribeiro, Luciana Souza, José Augusto Pires Bitencourt, Leonardo Brasil Felipe, Leonie Asfora Sarubbo, Sidnei Cerqueira dos Santos   +11 more
wiley   +1 more source

Nonthermal plasma approaches for combating implant‐associated infections: A compendious review

VIEW, EarlyView.
Implant‐associated infections pose serious clinical challenges. Non‐thermal plasma (NTP) modifications overcome this bottleneck in distinct ways relative to traditional sterilization methods. Gas‐phase plasmas generate highly energetic species, UV radiation and reactive oxygen/nitrogen species (RONS), which alter the implant surface properties.
A. M. Trimukhe, Satish Rojekar, Amol Gholap, K. Navaneetha Pandiyaraj, Mukesh Patekar, Claudia Riccardi, R. R. Deshmukh, Tomáš Kovářík, Kalim Deshmukh   +8 more
wiley   +1 more source

Experimental Factors and Techniques for Pool Boiling Heat Transfer Enhancement: A Critical Review

Heat Transfer, Volume 55, Issue 4, Page 2201-2232, June 2026.
ABSTRACT This review presents a comprehensive assessment of active strategies for enhancing pool boiling heat transfer, with a focus on techniques that do not rely solely on the boiling surface modification. It examines a broad range of methodologies including fluid additives, external fields, mechanical interventions, and thermal‐geometric tuning that
José E. Pereira, R. R. Souza, A. S. Moita   +2 more
wiley   +1 more source