Moulds are the cause of considerable economic losses, due to spoilage of such food products as flour, bread, canned goods, fruit juices, meat, dairy goods and beer. In particular they cause the destruction of stored fruits and vegetables, lower the quality of fodders, and also cause various diseases of plants, thus lowering yield. Environmental moulds potentially can result in human illness by the production of allergens, proteases, beta-glucans and volatile organic compounds.