What do we know about yeast? In fact, we used to regard yeast as a product for adding it when cooking different dishes. Yeast is added to the bread dough, any other pastry, so that the dough rises well, becomes lush, airy and fragrant. And in Soviet times yeast was popular among small schoolchildren, who, wanting to play pranks, added this product to the school pipeline. However, have we thought about the secret of yeast, what are their composition and why do they cause such a result?
What are yeast
In fact, the yeast is aliveorganisms, or rather a certain species of unicellular fungi. The composition of the yeast is quite simple. Yeast fungi consist of cells that are capable of vegetatively multiplying. With metabolism, the fermentation process occurs, which stops when oxygen is available to the yeast fungi. However, with a good glucose concentration, fermentation can continue even in the presence of oxygen. Scientists have long since learned how to profitably use this process, which is useful not only in cooking, but also in the extraction of various kinds of energy.
There are different types of yeast thatslightly differ in composition. Brewer's yeast, the composition of which has been studied by scientists, is used to prepare a kind of drink, which we know as beer. Also, products of this type of yeast are used in medicine as vitamins or food supplements that help build muscle mass or increase body weight. This tool is popular among athletes who work on their muscles, as well as among people who want to get better. Brewer's yeast itself is divided into two types: top and bottom fermentation. The difference lies in the yeast fermentation temperature, which is selected for the preparation of different beers.
As for other yeast, there areBaking yeast, the composition of which is quite rich, but does not give the right yeast bread to be considered useful. Such yeast includes proteins, carbohydrates, vitamins, nitrogen, as well as acids and natural chemicals. The use of bread yeast gives the dish an exquisite aroma, airiness, lightness and appetizing appearance. It is a fact that in any supermarket that deals with baking, this product is added to the products.
Chemical composition of yeast
Science knows that the chemical composition of yeast is notis constant and can vary depending on the type and the impact of the environment. Contain yeast mainly water and less dry matter. This product includes: inorganic substances, which include phosphoric acid and potassium, carbohydrates, which consist of polysaccharides and glycogen, nitrogen, amino acids, proteins and lipids. Under the influence of low or high temperature, moisture, direct sunlight, the yeast composition can vary considerably.
If we return to the use of yeast inof everyday life, then it should be added that today it is not exactly established what more they can bring - benefits, or vice versa, harm. Some chemicals that contain fungi in this form may be negatively perceived by the human body. However, other products can bring and benefit. In general, the use of yeast-containing foods should not be excessive.