Amphoteric surfactants containing ?-hydroxy ester group and an amino acid residue

Abstract

RESUMEN Tensioactivos anfóteros conteniendo un grupo alfa hidroxi éster y un residuo de aminoácidoSe prepararon una serie de tensioactivos anfóteros conteniendo un grupo alfa hidroxi éster y un residuo de aminoá-cido por adición de derivados epoxy (obtenidos mediante epoxidación de metacrilato de alquilo) a diferentes tipos de aminoácidos (glicina, alanina, valina, isoleucina, fenilalanina, tirosina, serina, treonina y ácidos aspártico y antranílico). Las estructuras de los compuestos preparados se confirmaron por los espectros de infrarrojo, de masa, resonancia magnética nuclear de protones y análisis elemental. Se determinaron la tensión superficial, el punto de Kraft, el poder espumante, la concentración micelar crítica en emulsión y las estabilidades de Ca++. También se estudiaron la actividad antimicrobiana y la biodegradabilidad. PALABRAS-CLAVE: Actividad antimicrobiana -Biodegradabilidad -Tensioactivos anfóteros. SUMMARY Amphoteric surfactants containing α-hydroxy ester group and an amino acid residueA series of amphoteric surfactants containing α-hydroxy ester group and an amino acid residue were prepared with the addition of epoxy derivatives (which were prepared from epoxidation of alkyl methacrylate) to different types of amino acids (glycine, alanine, valine, isoleucine, phenylalanine, tyrosine, serine, threonine, aspartic and anthranilic acid). The structures of the prepared compounds were confirmed by infrared spectra, proton magnetic resonance spectra, Mass spectra and elementary analysis. Surface tension, Kraft point, foaming power, critical micelle concentration emulsion and Ca ++ stabilities were determined. Antimicrobial activity and biodegradability were also screened.

Synthesis, Physicochemical Properties and Biological Evaluation of Some Peptide Candidates by Use of Liquid Phase Method as Potential Antimicrobial and Surface Active Agents

“…The dilute solution of all peptide chains could wet the cotton skeins in periods ranging from 106-137 sec. In this respect, these compounds may be potentially useful in variety of applications where wetting is desired e.g., dyeing processing, paintings, cosmetics and many other operations (Eissa, 2006). The cloud points of the individual chain were listed in Table 4.…”

“…It has also been established that derivatives of amino acids containing the 2-perfluoroalkyl-2-hydroxyethyl group considered a good amphoteric surfactants with different application (Nasreddine et al, 1993). Amphoteric surfactants that include amino acids found to have spacious application like shampoos, cosmetics, emulsion, paints, textile industry and corrosion inhibition (Eissa, 2006). In view of these observations, some model peptide chains bounded to polyethylene glycol according to liquid phase peptide synthesis (Bayer and Mutter, 1972) were synthesized in order to evaluate their surface active properties and antimicrobial activity.…”

Synthesis and evaluation of some surface active agents from long chain fatty amine

“…Herien, as a part of our program Amin, et al, 2003;Eissa, 2006) on the synthesis and characterization of different types of surface active agents, this manuscript describes the synthesis of a novel group of nonionic surface active agents containing heterocyclic moieties from low cost fatty amine (heptadecylamine)…”

New Water-soluble Metal Working Fluids Additives from Phosphonic Acid Derivatives for Aluminum Alloy Materials

“…No precipitates were observed A little precipitates were observed Precipitates were observed This test method is a convenient method for the practical use in factory, and is the modified way of the Ca 2+ stability test 6) and other tests [7][8] .…”