The real reason that McDonald's burgers do not rot for years

The story of 14-year-old hamburger from McDonald's, which has not rotted, became very popular. David Uaypl, kept in his burger, show it to your children as an example of what fast food packed with preservatives and chemistry.

However, there is a scientific point of view on this subject. Dr. Keith Warriner University of Guelph explained why hamburgers from McDonald's do not decompose:

"The network can find a lot of videos and photos clearly show that for a long time left on the burger does not rot, and all because it contains a large amount of preservatives and chemicals. But in fact, burgers, fries and chicken from McDonald's - it is a common food, rotting under certain conditions.

Germs that cause decay, as we do with you, we need water, nutrients, heat and time to grow. If you remove at least one of these conditions, the bacteria can not grow, and therefore will not spoil the product.

Take for example the usual hamburger of McDonald's. During the preparation of the water from the patties and buns evaporates. Therefore, the finished burger itself is already quite dry. If you leave it open in the room where the humidity average is 40%, it will quickly lose all the water. Simply put, the burger is dry faster than decompose, ie rot. »

To make sure that the burger is still way to spoil, just need to prevent moisture loss. For this purpose it can be wrapped in plastic film or leave a damp room, such as the bathroom. If done similar experiments with any burgers, it happens all the same.

via factroom.ru