Skim milk: nutritional value and calorie content, pros and cons of consumption
You can often see skimmed milk on store shelves. It is not a novelty, since its production was established back in Soviet times. To maintain a healthy lifestyle of the population, an appropriate balanced diet has been developed. At the end of the twentieth century, the popularity of such milk declined. However, in our time, the situation has changed, as more and more people pay attention not only to the quality of their diet, but also to its composition.
What is it and how is it done?
If you separate the cream from milk in its original form (it is also called whole), then the result will be its fat-free component. In different literature, it can be called removed or reversed. It has a slight bluish tint, less viscous in consistency, with a higher density than the whole one. Such a transformation is made possible by the use of a separator. Previously, only large manufacturers had such devices. With the advent of more compact manual or electric models, even small farms can produce low-fat dairy products. The normalization process is followed by pasteurization, as a result of which all harmful bacteria die. This is necessary to ensure that the storage and consumption of the product is safe.
In the production process, you can get by with ordinary items that are in every home.To do this, whole milk is poured into jars and placed in the refrigerator for a day. The resulting top layer, which is visible to the naked eye, is cream. They are removed with a spoon. The fat content of the product will depend on how carefully the cream was collected. As a rule, such milk can be called skimmed rather conditionally. It is more likely to be low-fat (about 1.5%).
What is it used for:
- as a human or animal food product;
- as a basis for the production of certain types of dairy products;
- as an ingredient in confectionery.
This product can be found not only in the form of a liquid, but also in the form of a dry powder. In terms of the content of nutrients, it is in no way inferior to liquid. To make it, pasteurized milk is thickened, homogenized and dried. In order to return it to a liquid form, you just need to add chilled or hot water. It is also added to coffee or other drinks, and is widely used in cooking.
Compound
With external apparent simplicity, milk is a product with a complex composition. Most of it is water. Of 100 grams, it takes 90. The rest is dry milk residue. In a fat-free state, it weighs at least 9 grams. This indicator is considered one of the most important in determining the quality. The smaller it is, the lower the quality (for example, when the resulting product is diluted with water).
Important components are proteins (3 grams) and carbohydrates (4.8 grams). In real fat-free products, it allows a minimum fat content (up to 0.5 grams). The composition also includes:
- vitamins (A, D, B, C, H, PP, E);
- minerals (calcium, potassium, iron, manganese, sulfur, phosphorus, chlorine, fluorine, magnesium);
- organic acids;
- milk sugar (lactose).
Hundredths and thousandths indicate the proportions of other vitamins and enzymes. All these components are in a certain natural balance, which allows them to be absorbed in a complex better than individually. The composition of the raw product includes microorganisms that are also involved in enzymatic processes. In order to avoid the reproduction of pathogenic microflora, it is better to carry out pasteurization.
In addition to useful substances, the composition may contain toxins, antibiotics, pesticides, detergents. Their content is strictly controlled. Harm from them can only be if the maintenance and nutrition of cows was incorrect.
To be sure of the quality, it is necessary to choose a trusted manufacturer, where the products are regularly monitored.
The energy value
Milk, like any other product that a person eats, serves as a source of energy. The amount of energy received by the human body after its use depends on the content of such components as: proteins, fats, carbohydrates (BJU) and organic acids. Energy value is measured:
- in kilojoules (denoted kJ);
- in kilocalories (kcal). That is why you can still meet the term "caloric content".
Calorie content is an indicator that is indicated on the package. If there is no such data, you can make the calculations yourself. During the oxidation of 1 gram of proteins, 4.1 kcal is released, 1 gram of carbohydrates - 3.7 kcal. For fats, this value is 2.3 kcal per 1 gram. However, their content in fat-free products is practically zero, so they are not taken into account. On average, the energy value in 100 grams of the product will be 31-35 kcal.
Low calorie content will appeal to those who are used to drinking milk every day and do not know how to replace it. The taste qualities are almost identical to the whole product, and the calorie content differs by almost two times.
It should be borne in mind that the energy costs for women who do not go in for sports and lead a passive lifestyle are 2000 calories per day (for men - 2500). The calorie content of just one glass of regular milk will be more than 120 kcal. 200 grams of skimmed milk provides about 70 kcal. The obvious difference will help to make the right diet that will not harm the body.
Powdered milk acts as a kind of concentrate. Therefore, it contains more components and, accordingly, higher calorie content. This means that its use should be limited. No more than 100-150 grams should be consumed per day.
Benefit
The question of the benefits of skimmed milk can be called debatable, since it is usually compared with a similar product, but with medium fat content. So, let's look at its positive aspects:
- Even after undergoing normalization and pasteurization, most of the vitamins and microelements are preserved in milk. They allow you to keep the human body normal.
- Low cholesterol will help avoid most cardiovascular diseases and keep the body healthy for those who have already encountered these diseases.
- Low fat content contributes to the normalization and acceleration of metabolism in the body. Proper consumption of milk in conjunction with physical activity contributes to weight loss.
- This product is shown as a dietary not only for gaining excess weight, but also for diseases of the digestive system.It can be used in both adults and children.
- On its basis, manufacturers produce entire lines of dairy and sour-milk products. This can include vitamin-fortified cocktails, juice-containing milk drinks, yogurt, kefir, cottage cheese. For athletes, you can use options with a high protein content.
Possible harm
The main problems arise when a person who is used to drinking regular milk switches to skim milk. In this case, the body begins to receive less vitamins A, E, D, K. Their deficiency affects the state of immunity, vision, blood clotting, the functioning of the liver, thyroid gland and reproductive function. Vitamin D promotes the absorption of calcium, which keeps muscles and bones healthy. If a person has been accustomed to drinking dairy products with a high fat content for a long time, it is necessary to think about how to compensate for the lack of fat-soluble vitamins.
People who are allergic to cow's milk protein should be treated with great caution. Of course, you can buy goat. But in this case, the fat content will be quite large (about 1.5 percent). In this case, the protein is in a finely dispersed form and is better absorbed. For people who are lactose intolerant, a low-fat product with a low lactose content is suitable. But it must be tried with caution. In addition, with age, fermentation may be impaired, and even such a product can only be consumed with special preparations.
A doctor's consultation will be required for certain diseases of the gastrointestinal tract.
Another issue is the presence of hormones and antibiotics in milk.There is an opinion that they are added directly to milk to increase the shelf life, injections are given to cows and added to their feed. In fact, the shelf life of a product directly depends on the degree of its pasteurization. And also in any large production there is a laboratory in which samples are thoroughly tested.
About which is better: full-fat milk or skim milk, see below.