Abstract: Cationic surfactants derived from the condensation of fatty acids and esterified dibasic amino acids, such as from lauric acid and arginine, in particular the ethyl ester of the lauramide of the arginine monohydrochloride (LAE), may be used for the treatment of objects which are infected with spores. The spores may originate from bacteria or fungi.

Abstract: This invention relates to a use of a composition for protecting against mites and ticks containing cationic surfactants such as ethyl-N?-lauroyl-L-arginate HCl (LAE). It has been found that cationic surfactants such as ethyl-N?-lauroyl-L-arginate HCl (LAE) and its salts are effective acaricidal agents.

Abstract: This invention relates to a use of a composition for the inactivation of toxins containing cationic surfactants such as ethyl-N?-lauroyl-L-arginate HCI (LAE). It has been found that cationic surfactants such as ethyl-N?-lauroyl-L-arginate HCI (LAE) and its salts are effective against endotoxins, exotoxins and aflatoxins.

Abstract: Cationic surfactants derived from the condensation of fatty acids and esterified dibasic amino acids, such as from lauric acid and arginine, in particular the ethyl ester of the lauramide of the arginine monohydrochloride (LAE), may be used for the treatment of objects which are infected with spores. The spores may originate from bacteria or fungi.

Abstract: This invention relates to a use of a composition for protecting oral cavity and teeth containing ethyl-N?-lauroyl-L-arginate HCl (LAE), a corresponding composition and a corresponding method for protecting teeth. Because of nearly epidemic incidence of dental erosion, there is a continuing need for improved products that provide protection against dental erosion. Hence, it is an object of the present invention to protect teeth against dental erosion. Surprisingly, it has been found that ethyl-N?-lauroyl-L-arginate HCl (LAE) and its salts attach to teeth and provide protection of teeth from erosion especially caused by the action of acid in food products and drinks such as chewing gum and lozenges compositions. Special advantages of this invention are: (a) sustained coating of the teeth by LAE and its homologues; (b) the coating agent provides a source of neutralizing plaque acids by providing sustained base formation.

Abstract: A solid composition comprising a cationic surfactant, such as the ethyl ester of the lauramide of the arginine mono-hydrochloride (LAE) and a polyene fungicide such as natamycin is provided. The solid composition is the basis for providing solutions of natamycin of increased concentration. The solid composition may be used for providing a dispersion of natamycin in a suitable liquid, such as tap water or an organic solvent. The dispersion may be further diluted with water. This leads to a solution of natamycin in water. The combination of the cationic surfactant and the polyene fungicide displays a biological effect which is stronger than the effect of each of the two components alone.

Abstract: This invention relates to compositions comprising cationic preservatives and anionic hydrocolloids, to methods of preparing them and their application in food microbiological protection. Due to their composition, food products are susceptible to act as a culture medium for microorganisms, and this constitutes a possible risk to human health. Thus, food products require good protection against microbiological contamination. The present invention relates to the interaction between cationic preservatives derived from the condensation of fatty acids and esterified dibasic amino acids and anionic hydrocolloids, such as pectins, xanthan gums, carrageenans, acacia gums or agars. The most preferred cationic preservative is the ethyl ester of the lauramide of arginine monohydrochloride (LAE). As a result of this interaction, some anionic hydrocolloids are able to absorb LAE and precipitate together by the enhancement of their lipophilic properties.

Abstract: Use of cationic surfactants, derived from the condensation of fatty acids and esterified dibasic amino acids, of the formula (1): occasionally leads to a bitter taste, when the compound is present in a large concentration. The bitter taste can be masked by combination with a second component selected from the list consisting of sucralose, neohespiridin (NHDC), ?-cyclodextrin, mono ammonium glycyrrhizinate (MAG), banana, mentholyptus, sodium dodecyl sulphate (SDS), anetol, menthol, thaumatin, adenosine monophosphate (AMP), aloten, arginine, sodium acetate, arilic acids (ferulic acid, caffeic acid), sclareolide, maltol, anane, phosphatidic acid, eucalyptol, lactisole, lysozyme, lactoglobulin, timol, borneol, acetol, phosphothreonine, phosphotyrosine, phosphoserine, Masking flavour 501521T, Masking flavour 501522, saccharine, aspartame, MK22 N&A FL for masking #25682, MM24 Prosweet N&A FL Enhancer, neodiosmin, xylitol, stevia and Natural and Functional Flavour (NAF®).

Abstract: Cationic surfactants derived from the condensation of fatty acids and esterified dibasic amino acids, such as from lauric acid and arginine, in particular the ethyl ester of the lauramide of the arginine monohydrochloride (LAE), may be used for the protection against the growth of the microorganisms. The cationic surfactants of this type are also effective against virus infections. Addition of LAE to cultures of Herpes virus type 1 Vaccinia virus and bovine parainfluenzae 3 virus leads to nearly complete reduction of the virus organisms in these cultures, such effects being observed after 5 and 60 minutes.

Abstract: The invention relates to a process for preparing a Na-acyl-L-arginine ester, derived from fatty acids and esterified dibasic amino acids, according to the following formula (I), where: X— is Br—, Cl—, or HSO4— R1: is linear alkyl chain from an saturated fatty acid, or hydroxy-acid from 8 to 14 atoms of carbon bonded to the ?-amino acid group through amidic bond. R2: is a linear or branched alkyl chain from 1 to 18 carbon atoms or aromatic. R3: is formula (II), where n can be from 0 to 4, from the appropriate organic acid and alcohol. The process is catalyzed by a hydrolase, more in particular a protease, the protease papain from <i> Carica papaya being highly suitable </i>. In order for the esterification reaction to run as wanted, the process is performed in a low-water-content organic medium. When the highly suitable papain from Carica papaya is used, a water activity of between 0.03 and 0.5 is selected.