title: A synthetic alternative to natural lecithins with antimicrobial properties.
abstract: Two soft biocompatible cationic surfactants from the amino acid arginine, 1,2-dilauroyl-3-acetylarginyl-rac-glycerol (1212RAc) and 1,2-dimirystoyl-3-acetylarginyl-rac-glycerol (1414RAc), were prepared. Their physicochemical properties show that they can be classified as multifunctional surfactants with self-aggregation behaviour comparable to that of short-chain lecithins. The two surfactants can simultaneously stabilise water-in-oil (W/O) droplets and oil-in-water (O/W) droplets, forming multiple emulsions. They have antimicrobial activity similar to that of conventional cationic surfactants and are as harmless as amphoteric betaines. These surfactants constitute an interesting alternative to the diglycerides and lecithins in formulations that require antimicrobial properties.
authors.affiliation: Departament de Tecnologia de Tensioactius, Institut d'Investigacions Químiques i Ambientals de Barcelona, CSIC, Jordi Girona, 18-26 Barcelona, Spain.
authors.forename: L
authors.initials: L
authors.lastname: Pérez
authors.forename: M R
authors.initials: MR
authors.lastname: Infante
authors.forename: R
authors.initials: R
authors.lastname: Pons
authors.forename: C
authors.initials: C
authors.lastname: Morán
authors.forename: P
authors.initials: P
authors.lastname: Vinardell
authors.forename: M
authors.initials: M
authors.lastname: Mitjans
authors.forename: A
authors.initials: A
authors.lastname: Pinazo
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D000935:Antifungal Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D002176:Candida albicans / Q000187:drug effects; D004912:Erythrocytes / Q000187:drug effects; D006090:Gram-Negative Bacteria / Q000187:drug effects; D006094:Gram-Positive Bacteria / Q000187:drug effects; D006801:Humans; D008826:Microbial Sensitivity Tests; D015394:Molecular Structure; D010713:Phosphatidylcholines / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D013501:Surface-Active Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology
chemical_list: D000900:Anti-Bacterial Agents; D000935:Antifungal Agents; D010713:Phosphatidylcholines; D013501:Surface-Active Agents