Abstract: A method of preparing a composition comprising one or more antigens adsorbed to an amino acid wherein said method comprises: (i) mixing a solution of one or more antigens with a solution of the amino acid in an aqueous acid whilst neutralizing the mixture of solutions, thereby forming an adsorbate comprising the one or more antigens and the amino acid; (ii) separating the adsorbate into a desired buffer by cross-flow filtration thereby forming said composition; and (iii) recovering said composition; wherein steps (i) to (iii) are performed in a sterile environment and within a closed system.

Abstract: A method of preparing a composition comprising one or more antigens adsorbed to an amino acid wherein said method comprises: (i) mixing a solution of one or more antigens with a solution of the amino acid in an aqueous acid whilst neutralising the mixture of solutions, thereby forming an adsorbate comprising the one or more antigens and the amino acid; (ii) separating the adsorbate into a desired buffer by cross-flow filtration thereby forming said composition; and (iii) recovering said composition; wherein steps (i) to (iii) are performed in a sterile environment and within a closed system.

Abstract: A roller grill assembly includes a roller grill housing and a plurality of rollers that are rotatably mounted in the housing, each roller having an external surface. The assembly also includes one or more heating elements provided in each roller for heating the external surfaces of the rollers and a roughened coating overlying at least a portion of the external surfaces of the rollers, the roughened coating generating friction between the rollers and food items placed on the rollers for effectively rotating the food items. The roughened coating is food-safe and includes roughening particles having a size of between 5-300 microns.