The invention is related to compositions for prevention against spoilage by moulds and yeasts comprising, as the only antimycotic agents, at least one compound selected from organic acids selected from the group consisting of caprylic acid, cinnamic acid, propionic acid, butyric acid, lactic acid, tartaric acid and fumaric acid, and salts thereof, and at least one compound selected from plant of fruit extracts, the oily phases of plant or fruit extracts, and monosubstances derived from such extracts or oily phases thereof. The invention is furthermore related to the use of such or similar compositions for protection of food or feed products from growth of moulds and yeasts as well as to food or feed products containing such compositions.
