"Do you see blood? No? And it is there, "or most unusual ways of blood use in industry
Blood is an essential "vtorproduktom", which in large quantities produce slaughterhouses around the world. Therefore there is nothing surprising in the fact that for thousands of years meat eating, people discover hundreds of ways of how to use the blood of slaughtered animals for their own benefit. So, today we will tell you about the most unusual applications of blood in the history of mankind. And yes, a big request particularly impressionable vegans refrain from further reading material in the name of saving the nerves, sneakers to the side of the author, and the tears of the innocent victims ladybug. So, "antiveganskuyu protection" we have set, so go ahead!
Throughout history, people did not disdain to consume blood extracted from the body of the killed animals, his food. Back in the Middle Ages, the blood was used to prepare a variety of foods instead of eggs, because the then cooks and butchers, even without knowing anything about biochemistry, obviously guessed that the blood acts as a good cheaper substitute for conventional eggs, thanks to the presence in it of albumin protein.
During the Second World War, in the context of an acute food shortage, the German soldiers also often gave out bread for the production of which was used instead of expensive eggs animal blood plasma. Due to the low cost and blood albumin curl properties at relatively low temperatures, it is still regarded as a promising potential substitute eggs in the food industry, copper unpleasant taste can be masked simply sorts flavored.
The first "bloody" plastic
As far back as 1855 a certain Charles François Lepage patented invention is an unusual one - early semblance of modern plastic, made on the basis of animal blood, called "BoisDurci". In order to manufacture this unusual material inventor mixed blood albumin, which was shed in abundance in slaughterhouses Paris, sawdust and dye, and then boil the resulting mixture under heat and pressure. The result was a durable and smooth material that looks reminiscent of a tree. Despite its "bloody" origin, plastics came to taste the French, and from it began to make a lot of different items, including picture frames. By the way, in 1877, Americans have made their own polymer from cow blood called "Gematsit".
Blood in concrete
The ancient Romans were known for their amazing durability of concrete structures, such as the famous aqueducts and more. In part, this may be due to the phenomenal resistance unusual one ingredient that is added to the concrete - the blood of slaughtered animals. When blood is added to the composition, followed by stirring, in concrete form small bubbles of air, which makes it more easy, durable, resistant to low temperatures and water erosion.
In 1805, the recipe of the ancient Romans successfully took over the Scottish engineer Thomas Telford, which is used for the construction of masonry mixture of lime, water and cow blood. In other matters, the blood continued to be used in construction and in the more recent past. Only about a hundred years ago, a French construction company is actively used a unique type of concrete on the basis of processed animal blood and the other two ingredients cellulose-based.
The adhesive on the basis of animal blood used by engineers for many years. Blood was obtained from different animals, including chickens, cows and pigs, and the finished composition prepared from an aldehyde and blood, different unique waterproof properties that exceed an order of all available equivalents. Precisely because of this, blood glue, the recipe of which was independently developed by chemists from different countries, began to play a key role in military aviation.
When, during the Second World War, many designers are faced with a significant problem, which was the lack of phenol for the production of plywood glue deficient chemical became abundantly diluted blood. Despite the fact that a similar mixture was not too robust, it continued to be widely used for lack of a better, however, after the discovery of synthetic polymers, which proved to be more reliable and less expensive, from the blood of glue had to be abandoned.