Powdered milk: product characteristics and its impact on health
The associations evoked by the word "milk" may be different for individuals. The general thing is that almost always the first thought will be about a liquid product. But it is just as important to know what its dry variety is.
Product description
Powdered milk is just a powder, to obtain which ordinary milk that has been pasteurized and normalized is dried using a special technology. Most often, for use, it is diluted in warm water in exact proportions. There are two subspecies of milk powder, differing in dissolution rate. The first attempts to make such a product began in the first half of the 19th century. But only by the end of the century was it possible to develop a full-fledged industrial technology and debug its mass use.
Most modern milk powder factories use spray systems. They are highly productive, but at the same time they are able to keep the quality at a high level. The former version of the machines - roller-type dryers - have been preserved only in the confectionery industry. They appreciate the opportunity to replace expensive cocoa butter. For retail sale, powdered milk is not made on roller dryers, because they are not efficient enough.
It is customary to divide milk powder into whole and devoid of fat. An instant variety is made by mixing these two products. The resulting combination is treated with steam to moisten. According to technology, it should form lumps.As soon as this happens, drying is carried out again.
Composition and nutritional value
The content of substances in whole milk powder duplicates the chemical composition of traditional milk, only the concentration is increased. Laboratory analysis shows that there is:
- protein;
- various fatty components;
- lactose;
- trace elements;
- essential vitamins.
The nutritional value of powdered milk ranges from 372 to 549 kcal per 0.1 kg of powder. Therefore, excessively active nutrition with this product threatens to increase the size of the waist. Whole milk powder contains 4% water, while skimmed milk contains 1% more. At the same time, the concentration of fats, although not equal to zero, but it decreases from 25 to 1%. The importance of proteins (up to 36%) and milk sugars (up to 52%) is increasing.
At the same time, 2/5 of the mineral components are lost, leaving only 6%. But the energy value of a fat-free product is minimal. Powdered milk is rich in:
- potassium;
- calcium;
- phosphorus;
- sodium.
For your information: large batches of milk powder are shipped in 25 kg bags. In order to return the original proportions of substances at home and get “true” milk or a product close to it, you will have to carefully observe the proportions when diluted with water. The density of the whole and fat-free product is 1233 kg per 1 cu. m.
Important: all this information refers to milk powder obtained from cow's milk; but it can also be mare - however, this type of food appeared only recently.
Differences are manifested even in the fact that dry mare's milk is obtained not at a high, but at a low temperature. This type of drying is called sublimation. Only this method allows you to save the valuable qualities of the original product, which fresh milk loses in a matter of hours.According to people's perception and biological value, the sublimate reproduces the "original".
If you strictly observe all proportions, you can get the same composition as that of fresh milk.
It includes (and in the most rational proportions):
- a number of enzymes and fats;
- metallic and non-metallic trace elements;
- the most valuable amino acids;
- thiamine;
- folic acid;
- vitamins A, C, E.
Half a liter of the drink is enough to close the need for ascorbic acid for 24 hours. Albumin, which is the basis of mare's milk, is "softer" than casein. The digestive system is less loaded when it is used. Even maintaining a noticeable amount of fat is to be welcomed - it is one of the best forms of fatty substances on the planet. Accelerated splitting and equally rapid assimilation bring extraordinary benefits.
Kinds
Dry milk powder has been used as an integral part of baby food for a very long time. The reasons can be very different, now it is mainly financial considerations. But it is worth noting that a full-fledged diet designed specifically for children contains many times more fats and carbohydrates. This composition shift is deliberately allowed by baby food developers, because it must support rapid development. As a number of scientific studies have shown, the growing body of a child consumes as much energy as even a lumberjack or weightlifter does not need.
Skimmed milk powder is about the same nutritional value as protein. But over 50% of the energy reserve in it comes from carbohydrates. Accordingly, this product is suitable for people with a normal physique (without deviations from obesity or unjustified thinness).The whole type of milk powder, on the other hand, is recommended for those seeking to increase body weight. In addition to the two main varieties, so-called lactose-free milk is often put on the shelves of retail chains.
Many people think that this is some kind of synthetic, unnatural product, oversaturated with substitutes. But in reality, everything is not so, such a drink is even useful for people with impaired lactose absorption.
Those who suffer from this disorder, after drinking even perfect ordinary milk, immediately undergo an allergic attack. First of all, it covers the digestive organs. However, further consequences are life-threatening.
To free cow's milk from lactose, it is passed through special membranes. This technological process is very complicated, which dramatically increases the cost of the finished product. In all other respects, it is indistinguishable from "plain" milk. Judging by subjective sensations, the only difference is a sweetish aftertaste. You just need to get used to it; Those who are not allergic to lactose or lactose intolerant can drink lactose-free milk without any fear.
There is another type of milk powder: produced without casein. This substance is designed to form the hooves and horns of animals. Accordingly, in the digestive system of calves there is everything necessary for the breakdown and assimilation of casein. But for the human body, it is not just a zero value. It brings significant harm, and the point is not at all in the mythical slag deposited in the vessels.
The fact is that under the influence of milk protein, acidity in the stomach increases. To eliminate negative consequences, calcium is consumed.Therefore, in reality, the use of ordinary milk can, instead of strengthening bones and muscles, provoke their weakening. In addition, casein is an extremely active allergen. And its use can contribute to the appearance of a number of diseases, and therefore casein-free milk is a very valuable achievement of modern technology.
Benefit
To the question whether powdered milk is good for the body or not, a positive answer has long been given. The chemical composition of the product is the same as that of "real" milk, and all doubts about this are just a prejudice. Production of immunoglobulins that fight viruses, comes from the proteins contained in milk. Another reason to drink milk is suppression of insomnia and successful fight against pain in the head.
But milk powder is used not only by ordinary people: it is highly valued by professionally involved in any kind of sports.
For them, the properties of the product are important, allowing you to build muscle mass faster. For a similar reason, milk powder is included in infant formula. Judging by the reviews, milk powder is better than fresh milk for people suffering from ailments of the gastrointestinal tract. It:
- more digestible;
- positive effect on acidity;
- copes with many types of pain;
- stops heartburn;
- stabilizes intestinal peristalsis.
Health benefits are brought not only by the whole, but also by the skimmed version of milk powder. It is especially important for those who are prone to excessive fullness. This product is also actively used for cosmetic purposes. It improves the appearance of hair, skin, and even nails. Wrinkles are reduced, characteristic flabbiness is avoided.
Contraindications and harm
It is worth noting that sometimes milk powder can be harmful.It poses a danger in the same cases as cow (adjusted for changes in composition, of course). Purification of lactose and casein solves many problems, but not all. Moreover, allergies can also occur to other components of milk, which cannot be removed without disturbing the balance.
With special care should be used milk powder when breastfeeding. After all, those substances that have almost no effect on the body of adults turn out to be very dangerous for babies. In old age, it is undesirable to consume milk in dry form, as well as in liquid form, in order to exclude the appearance of atherosclerosis. The minimum doses of milk are acceptable when the joints are saturated with calcium salts.
It is very important that cow's milk itself be of high quality, from which a dry mixture is subsequently made.
With regard to diseases, the situation is as follows:
- with pancreatitis, you can drink milk powder when remission occurs;
- with urolithiasis with phosphate stones, it is prohibited;
- it is advisable and even desirable for those who want to lose weight to use moderate portions of the product.
Application
To choose powdered milk, you need to carefully check its shelf life. For a whole product, it is significantly less than for a fat-free one (8 and 36 months, respectively). Another important aspect is that the packaging is not damaged. In high-quality milk powder, only components “borrowed” from a natural whole drink are present. The use of synthesized preservatives, as well as fat of vegetable origin, is categorically unacceptable.
Real milk powder is only colored cream or white. When there are foreign impurities, they inevitably affect the color. A quality product has a uniform consistency.The formation of lumps is excluded, as is the appearance of sediment when the powder is dissolved in water. One of these manifestations is enough to make sure that the milk does not meet the standards.
In everyday life, powdered milk is used after restoration with water in the same way as the usual kind. Including for cooking:
- baking;
- other confectionery products;
- sweet creams.
It is required to dilute milk powder only with warm water, cold and hot liquids are equally unsuitable. The recommended dilution ratio is 1: 3. In this case, it is necessary to stir the liquid, otherwise it will stick together, lumps will appear. Next, the milk is left alone for a while so that the proteins swell. According to the dietary characteristics, skimmed milk is better than the whole product.
It is suitable for fasting days and in compliance with complex diets. With the help of a drink containing a small amount of fat, it is easy to prepare various cereals and drinks. It is used to bake cakes or make sauces. It is recommended to drink milk powder 1-2 hours before going to bed. The product, assimilated quickly, stimulates the brain centers responsible for relaxation.
Cosmetic use of milk powder most often involves the use of masks. They are suitable for all skin types, regardless of age. For your information: Contrary to popular myth, milk powder is low in cholesterol. Even egg powder contains much more of this substance. The general conclusion is that milk powder is more useful than harmful.
In order to fully use the purchased product, excessive humidity and overheating of the air must be avoided. Consumers are freed from the need to boil the product, since it has already been thermally processed from the start. You can add powdered milk to tea or coffee.Some believe that it is even better to refuse to dilute it at all, but you just need to introduce it into certain dishes. Important: until the onset of the first year, children are recommended to give this particular product, the traditional cow simply will not be assimilated. It can be used both in pure form and as a component of a milk mixture. Moreover, some experts believe that there is no point in retraining for ordinary dairy food.
For a healthy body at any age, a dry product is much more preferable. This rule also applies to the nutrition of nursing mothers.
Storage
Both fat-free and whole dry products should not be stored in hot weather. Leaving it at normal room temperature in a closed package, you can not worry about the nutritional quality for up to 90 days. If the container is opened, you will have to drink milk three times faster. The dry powder diluted with water has the shortest shelf life: even inside the refrigerator, it will deteriorate on the fourth day.
To extend the shelf life of a whole dairy product, the remaining unused product is transferred to an impermeable container. The container must be made of glass or paper. The milk is put in the refrigerator on the shelf. This technique allows you to increase the shelf life of a whole drink up to 7 or 8 months. For skim this period will reach 12 months.
You will learn more about milk powder in the following video.