Abstract: The invention provides processes for treating commercial grade preservatives to remove the off-flavor and/or off-odor from the preservatives. The processes involve preparing a solution by dissolving the preservative in a suitable solvent, such as water or methanol or mixtures thereof. The preservative solution is then passed through a filter to separate and remove organic acid impurities from the preservative. The undesirable tastes and odors, principally caused by the organic acid impurities, are retained in the filter while the preservative passes through the filter. In one embodiment, the filter is a bed of anion exchange resin that reacts with and removes the organic acid impurities. In another embodiment, the filter contains a metal cation that converts the organic acid impurities into insoluble salts which remain in the filter. The solvent can be removed by evaporation after the preservative solution is passed through the filter.

Abstract: A method of treating antimicrobial products, dairy products, pharmaceutical products and other products having offensive tastes or odors to remove the off-odors and off-tastes from the products. The method involves exposing a selected commercial grade product that contains a small amount of free acid impurities to an ammonia gas. The ammonia gas reacts with the free acid impurities to convert the free acids into ammonium salts, thereby reducing or eliminating the off-flavor and off-odor of the product.

Abstract: Novel antimicrobial products and methods of making and using the same are shown, whereby the products can be used in the same or greater percentages as conventional microbial growth inhibitors without imparting an off-flavor, taste, color or odor to the products in which they are used. The antimicrobial products are formed by reacting azodicarbonamide or an ammonia gas with a compound selected from the group consisting of benzoic acid, sodium benzoate, calcium benzoate, potassium benzoate, acetic acid, sodium diacetate, paraben, niacin, calcium acetate, calcium diacetate, citric acid, lactic acid, fumaric acid, sorbic acid, sodium sorbate, calcium sorbate, potassium sorbate, propionic acid, sodium propionate, calcium propionate, potassium propionate and mixtures thereof. In one embodiment, the product is prepared by placing a layer of azodicarbonamide on a substrate and covering the layer with a gas permeable separator.

Abstract: The invention relates to novel mold growth inhibiting products for various foodstuffs, and a method of making and using the same. The mold growth inhibiting product is generally a mixture of various compounds, including: a first compound selected from the group consisting of azodicarbonamide or potassium bromate, a second compound selected from the group consisting of benzoic acid, sodium benzoate, calcium benzoate, potassium benzoate, paraben, acetic acid, lactic acid, fumaric acid, citric acid, potassium sorbate, sodium sorbate, calcium sorbate, sorbic acid, calcium propionate, potassium propionate, sodium propionate, propionic acid or mixtures thereof. In a second embodiment of the invention, a third compound is added which lowers the decomposition temperature of the azodicarbonamide. In a fifth embodiment of the invention, the mold growth inhibiting product is prepared by placing a layer of azodicarbonamide on a substrate means and then covering said layer with a gas permeable separator means.

Abstract: A method of preserving agricultural products or materials such as hay and silage is disclosed. The method comprises the utilization of a composition for coating the material in order to form a water-repellent protective coating thereon. Preferably the coating includes a preserving agent, having substantial antimicrobial activity. Further, in some instances the coating may include an adhesive forming constituent enabling outer layers of material to become tightly bound in the stack, bale or pile of material being treated. When the latter adhesive compositions are utilized, the treated material tends to retain its physical integrity, against loose portions becoming detached therefrom. Also disclosed are preferred compositions for achieving the methods of treatment, and also preferred methods for preparing certain of the preferred compositions.

Abstract: A method of preserving agricultural products or materials such as hay and silage is disclosed. The method comprises the utilization of a composition for coating the material in order to form a water-repellent protective coating thereon. Preferably the coating includes a preserving agent, having substantial antimicrobial acitivity. Further, in some instances the coating may include an adhesive forming constituent, enabling outer layers of material to become tightly bound in the stack, bale or pile of material being treated. When the latter adhesive compositions are utilized, the treated material tends to retain its physical integrity, against loose portions becoming detached therefrom. Also disclosed are preferred compositions for achieving the methods of treatment, and also preferred methods for preparing certain of the preferred compositions.