Abstract: An antibacterial agent suppresses the growth of gram-positive contaminating bacteria. The antibacterial agent is selected from: a lactylate in accordance with the general formula (R—(O—CH(CH3)—CO)aO)bM; a glycerol ester in accordance with the general formula CH2OR1—CHOR2—CH2OR3; and, mixtures thereof. In the general formulae: R represents a C4-C18 acyl group, R1, R2 and R3 are each independently selected from H or a C4-C18 acyl group, the acyl group having an alkyl or alkenyl chain which may be branched or unbranched, with the proviso that at least one of R1, R2 or R3 is H and at least one of R1, R2, or R3 is an acyl group; M represents a proton (H+) or a counter-cation chosen from the group Li, Na, K, Ca, Mg, Zn, Fe(II), Cu, Mn, Ag, ammonium or substituted ammonium having one or more (C1-4)alkyl optionally substituted with one or more hydroxyl.

Abstract: An antibacterial composition includes a combination of fatty acid ester of fatty acid and hydroxy carboxylic acid with an antibacterial agent selected from polylysine, chitosan, protamine, their salts and mixtures hereof. The hydroxy carboxylic acid may be present as acid in its free form, in its salt form and/or in its ester form. The composition may be used as an antibacterial agent against gram-negative bacteria in various products, applications and methods.

Abstract: An antibacterial composition includes a combination of fatty acid ester of fatty acid and hydroxy carboxylic acid with an antibacterial agent selected from polylysine, chitosan, protamine, their salts and mixtures hereof. The hydroxy carboxylic acid may be present as acid in its free form, in its salt form and/or in its ester form. The composition may be used as an antibacterial agent against gram-negative bacteria in various products, applications and methods.

Abstract: The present invention relates to an antibacterial composition based on a combination of fatty acid ester of fatty acid and hydroxy carboxylic acid with an antibacterial agent selected from polylysine, protamine, their salts and mixtures hereof. The hydroxy carboxylic acid may be present as acid in its free form, in its salt form and/or in its ester form. The present invention further is directed to the use of said composition as antibacterial agent against gram-negative bacteria in various products, applications and methods. Furthermore, the present invention is related to products comprising said antibacterial agent.

Abstract: The present invention relates to a method for the prevention and/or reduction of the presence, growth and/or activity of gram-negative bacteria comprising application of a composition comprising glycerol-based fatty acid esters and polylysine and/or salts of polylysine, wherein said glycerol-based fatty acid ester is used as antibacterial agent. The present invention further relates to the use of said composition as antibacterial agent in various products and applications ranging from technical products and personal-care products to food and drink products for animals and human consumption.

Abstract: The present invention relates to an antibacterial composition based on a combination of fatty acid ester of fatty acid and hydroxy carboxylic acid with an antibacterial agent selected from polylysine, protamine, their salts and mixtures hereof. The hydroxy carboxylic acid may be present as acid in its free form, in its salt form and/or in its ester form. The present invention further is directed to the use of said composition as antibacterial agent against gram-negative bacteria in various products, applications and methods. Furthermore, the present invention is related to products comprising said antibacterial agent.