We have all been in the position of throwing away some foodstuff due to the expiration date, or even in the shop we could find food, drinks, milk etc., which are in the shelves with already expired date. Thanks to Minnesota University scientists, however, we shall never be in such a situation in the future. Namely, the scientists discovered a substance called bizin which can preserve food permanently fresh by preventing action of toxic bacteria – Escherichia coli, salmonella and listeria. Another good news with this substance is that it will reduce the number of poisonings drastically. The substance is naturally produced in certain bacteria harmless to humans. In other words, bizin is a kind of preservative discovered by chance by scientists who studied the human intestine bacteria. Its “magic characteristics” are reflected in the fact that it can protect from harm indefinitely, killing bacteria efficiently, thus preventing their development. Bizin prevents the growth of lethal bacteria that cause decay of fresh protein contained in meat, fish, milk products and eggs. The substance does not affect nutritional qualities and is a natural ingredient. This preservative, beside being good for food and its “use until” date, can also prolong the freshness of an open bottle of wine, but the same does not go for fresh fruits and vegetables. The scientists who patented the substance expect the first bizin containing products will be put into production within three years.